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Hu Z, He Q, Zhao H, Wang L, Cheng Y, Ji X, Guo Y, Hu W, Li M. Organic carbon compounds removal and phosphate immobilization for internal pollution control: Sediment microbial fuel cells, a prospect technology. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024:125110. [PMID: 39395732 DOI: 10.1016/j.envpol.2024.125110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Revised: 10/09/2024] [Accepted: 10/09/2024] [Indexed: 10/14/2024]
Abstract
As a current technology that can effectively remove organic carbon compounds and immobilize phosphorus in sediment, sediment microbial fuel cells (SMFCs) can combine sediment remediation with power generation. This review discusses the removal efficiency of SMFCs on organic carbon compounds, including sediment organic matter, antibiotics, oil-contaminated sediments, methane, persistent organic pollutants, and other organic pollutants in sediment, with more comprehensive and targeted summaries, and it also emphasizes the mitigation of phosphorus pollution in water from the perspective of controlling endogenous phosphorus. In this review, the microbial community is used as a starting point to explore more about its roles on phosphorus and organic carbon compounds under SMFCs. Electrode modification, addition of exogenous substances and combinations with other technologies to improve the performance of SMFCs are also reviewed. It is further demonstrated that SMFCs have the prospect of long-term sustainability, but more attention needs to be paid to the study of the mechanism of SMFCs and the continuous improvement of devices for further application in practice.
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Affiliation(s)
- Zhenzhen Hu
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Qinqin He
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Hongjun Zhao
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Lingjun Wang
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Yuxin Cheng
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Xiaonan Ji
- Shanghai Investigation, Design & Research Institute Co., Ltd., Shanghai 200335, China; YANGTZE Eco-Environment Engineering Research Center (Shanghai), China Three Gorges Corporation, Shanghai 200335, China
| | - Yali Guo
- Shanghai Investigation, Design & Research Institute Co., Ltd., Shanghai 200335, China; YANGTZE Eco-Environment Engineering Research Center (Shanghai), China Three Gorges Corporation, Shanghai 200335, China
| | - Wei Hu
- Shanghai Investigation, Design & Research Institute Co., Ltd., Shanghai 200335, China; YANGTZE Eco-Environment Engineering Research Center (Shanghai), China Three Gorges Corporation, Shanghai 200335, China
| | - Min Li
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China.
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2
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Mao S, Ma S, Zhao Q, Hu Q, Zhou Y, Zhang M, Zeng Z, Yu C. Carbohydrate based biostimulation regulates the structure, function and remediation of Cr(VI) pollution by SRBs flora. ENVIRONMENTAL RESEARCH 2024:120088. [PMID: 39389197 DOI: 10.1016/j.envres.2024.120088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2024] [Revised: 08/22/2024] [Accepted: 09/28/2024] [Indexed: 10/12/2024]
Abstract
Sulfate reducing bacteria (SRBs) have promising applications as important microorganisms in the microbial approach to remediation of soil heavy metal pollution. However, fewer studies have been conducted on the differences in community structure, community function, heavy metal remediation capacity and effects with SRBs cultured from different carbohydrate. In this study, we investigated the structure and function of different SRBs flora, the reduction mechanism of Cr(VI) and remediation effect on Cr(VI) contaminated soil through high throughput sequencing, ICP-OES analysis and a series of soil remediation experiments. The results showed that there were significant differences in the community structure and function of SRBs flora cultured with different carbohydrate, and glycerine cultivated community with high SRBs abundance, diverse community structure, complete community function, which realizing the best SRBs flora performance. This SRBs flora under the optimal carbon/sulfur ratio, Fe(II), and sodium chloride conditions of 2, 50-500 mg/L, and 0-2.5 %, respectively and the highest sulfate and Cr(VI) reduction rates reached 84.2 % and 73.6 %, respectively, which the hydrogen sulfide pathway was the dominant pathway for Cr(VI) reduction. The SRBs flora cultured with glycerine, lactate, and butyrate obtained a good community structure sulfate and Cr(VI) reduction rates in contaminated soils, which the restored seed germination function and significantly blocked the migration of Cr(VI) into plants. The study provides new technical idea to regulate the structure and function of SRBs flora by means of selecting carbohydrate for the efficient remediation of soil Cr(VI) pollution.
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Affiliation(s)
- Shuaixian Mao
- School of Chemical & Environmental Engineering, China University of Mining & Technology Beijing, Beijing, 100083, China
| | - Suya Ma
- School of Chemical & Environmental Engineering, China University of Mining & Technology Beijing, Beijing, 100083, China
| | - Qiancheng Zhao
- School of Chemical & Environmental Engineering, China University of Mining & Technology Beijing, Beijing, 100083, China
| | - Qiaoyu Hu
- School of Chemical & Environmental Engineering, China University of Mining & Technology Beijing, Beijing, 100083, China
| | - Ying Zhou
- School of Chemical & Environmental Engineering, China University of Mining & Technology Beijing, Beijing, 100083, China
| | - Minghan Zhang
- School of Chemical & Environmental Engineering, China University of Mining & Technology Beijing, Beijing, 100083, China
| | - Zhiyong Zeng
- School of Chemical & Environmental Engineering, China University of Mining & Technology Beijing, Beijing, 100083, China
| | - Caihong Yu
- School of Chemical & Environmental Engineering, China University of Mining & Technology Beijing, Beijing, 100083, China.
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Wang J, Zhang Y, Zhou L, Gao Y, Li K, Sun S. Multiple effects of carbon, sulfur and iron on microbial mercury methylation in black-odorous sediments. ENVIRONMENTAL RESEARCH 2024; 263:120048. [PMID: 39313174 DOI: 10.1016/j.envres.2024.120048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Revised: 09/06/2024] [Accepted: 09/20/2024] [Indexed: 09/25/2024]
Abstract
Black-odorous sediments provide ideal conditions for microbial mercury methylation. However, the multiple effects of carbon, sulfur, and iron on the microbial methylmercury of mercury in black-odorous sediments remains unclear. In this study, we conducted mercury methylation experiments using sediments collected from organically contaminated water bodies, as well as black-odorous sediments simulated in the laboratory. The results showed that black-odorous sediments exhibit a high capacity for mercury methylation. By simulating the blackening and odorization process in sediments, it was confirmed that dissolved oxygen, organic matter and sulfide were the primary factors triggering the black-odorous phenomenon in sediments. Regarding the influence of key factors in sediments on methylmercury formation, the batch tests demonstrated that high concentrations of organics additions (above 200 mg/L) may reduce bacterial activity and weaken mercury methylation in sediments. Under five different iron-sulfur ratios, the concentrations of methylmercury in the black-odorous sediments showed an increasing trend, the ratio of 5.0 Fe/S exhibited the highest MeHg accumulation. The iron-sulfur ratio in the sediment had a significant effect on the mercury methylation process, which was mainly due to the competition between Fe2+ and Hg2+ for sulfide sites and the adsorption/coprecipitation of Hg2+ by FeS. These findings offer a potential avenue for further understanding and controlling mercury methylation, contributing to the mitigation of the potential threat of mercury pollution to the environment and human health.
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Affiliation(s)
- Jinting Wang
- School of Hydraulic and Environmental Engineering, Changsha University of Science and Technology, Changsha, China.
| | - Yan Zhang
- School of Hydraulic and Environmental Engineering, Changsha University of Science and Technology, Changsha, China
| | - Lean Zhou
- School of Hydraulic and Environmental Engineering, Changsha University of Science and Technology, Changsha, China
| | - Yang Gao
- School of Hydraulic and Environmental Engineering, Changsha University of Science and Technology, Changsha, China
| | - Kai Li
- School of Hydraulic and Environmental Engineering, Changsha University of Science and Technology, Changsha, China
| | - Shiquan Sun
- School of Hydraulic and Environmental Engineering, Changsha University of Science and Technology, Changsha, China; Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha, China.
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Zhang S, Wang A, Li L, Liang Z, Huang K, Ye Q, Deng G, Yang Y, Li P, Yu G, Liang Y. Phosphorus immobilization in sulfide-ferrous oxidation process driven by nitrate reduction during black-odorous sediment remediation. BIORESOURCE TECHNOLOGY 2024; 407:131130. [PMID: 39032533 DOI: 10.1016/j.biortech.2024.131130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2024] [Revised: 07/10/2024] [Accepted: 07/17/2024] [Indexed: 07/23/2024]
Abstract
During remediation of black-odorous sediment, the pathways of phosphorus immobilization require clarification alongside the oxidation of sulfide and ferrous. This study separated the oxidation stages of sulfide and ferrous through controlled sodium nitrate dosing ratios and methods, and analyzed the changes in phosphorus species and immobilization effects throughout these processes. Results showed that iron-bound phosphorus was the primary contributor to the phosphorus immobilization in the oxidation process, with increased 19% in ferrous oxidation stage and affected the transformation between phosphorus sources or sinks in the adsorption experiment. Additionally, the increase in abundance of phosphorus uptake and transport genes, and denitrifying phosphorus accumulation genes in sediment after ferrous oxidation (1 %-18 % and 87 %-164 %, respectively) indicated the potential for biological phosphorus immobilization. These results demonstrated that higher degrees of sediment oxidation correlate with stronger phosphorus immobilization capacities, providing theoretical bases for phosphorus immobilization during the restoration of black-odorous water bodies.
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Affiliation(s)
- Shengrui Zhang
- Department of Environmental Science and Engineering, College of Natural Resource and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Ao Wang
- Department of Environmental Science and Engineering, College of Natural Resource and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Luyao Li
- Department of Environmental Science and Engineering, College of Natural Resource and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Ziyang Liang
- Department of Environmental Science and Engineering, College of Natural Resource and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Kongrong Huang
- Department of Environmental Science and Engineering, College of Natural Resource and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Qingqi Ye
- Department of Environmental Science and Engineering, College of Natural Resource and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Guangkang Deng
- Department of Environmental Science and Engineering, College of Natural Resource and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Ying Yang
- Department of Environmental Science and Engineering, College of Natural Resource and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Peiling Li
- Department of Environmental Science and Engineering, College of Natural Resource and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Guangwei Yu
- Department of Environmental Science and Engineering, College of Natural Resource and Environment, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Guangzhou 510642, China.
| | - Yuhai Liang
- Department of Environmental Science and Engineering, College of Natural Resource and Environment, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Guangzhou 510642, China.
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5
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Liao M, Qiu Y, Tian Y, Li Z, liu T, Feng X, Liu G, Feng Y. Ecological filter walls for efficient pollutant removal from urban surface water. ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY 2024; 21:100418. [PMID: 38638606 PMCID: PMC11024571 DOI: 10.1016/j.ese.2024.100418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 03/18/2024] [Accepted: 03/18/2024] [Indexed: 04/20/2024]
Abstract
Urban surface water pollution poses significant threats to aquatic ecosystems and human health. Conventional nitrogen removal technologies used in urban surface water exhibit drawbacks such as high consumption of carbon sources, high sludge production, and focus on dissolved oxygen (DO) concentration while neglecting the impact of DO gradients. Here, we show an ecological filter walls (EFW) that removes pollutants from urban surface water. We utilized a polymer-based three-dimensional matrix to enhance water permeability, and emergent plants were integrated into the EFW to facilitate biofilm formation. We observed that varying aeration intensities within the EFW's aerobic zone resulted in distinct DO gradients, with an optimal DO control at 3.19 ± 0.2 mg L-1 achieving superior nitrogen removal efficiencies. Specifically, the removal efficiencies of total organic carbon, total nitrogen, ammonia, and nitrate were 79.4%, 81.3%, 99.6%, and 79.1%, respectively. Microbial community analysis under a 3 mg L-1 DO condition revealed a shift in microbial composition and abundance, with genera such as Dechloromonas, Acinetobacter, unclassified_f__Comamonadaceae, SM1A02 and Pseudomonas playing pivotal roles in carbon and nitrogen elimination. Notably, the EFW facilitated shortcut nitrification-denitrification processes, predominantly contributing to nitrogen removal. Considering low manufacturing cost, flexible application, small artificial trace, and good pollutant removal ability, EFW has promising potential as an innovative approach to urban surface water treatment.
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Affiliation(s)
- Menglong Liao
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Ye Qiu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Yan Tian
- Heilongjiang Academy of Chemical Engineering, No 3, Nanhu Street, Century District, High-Tech Zone, Harbin, 150028, China
| | - Zeng Li
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Tongtong liu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Xinlei Feng
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Guohong Liu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Yujie Feng
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China
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Jing Z, Li Q, Lu J, Ma J, Ye F, Tu S, Dong B, Liu X, Gao H. Revealing microbial community assembly patterns and succession process in the blackening process of black-odor water. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 352:124129. [PMID: 38729505 DOI: 10.1016/j.envpol.2024.124129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Revised: 04/25/2024] [Accepted: 05/07/2024] [Indexed: 05/12/2024]
Abstract
Human-imported pollutants could induce water black, changing microbial community structure and function. Employed 16S rRNA high-throughput sequencing, field-scale investigations and laboratory-scale experiments were successively conducted to reveal mechanistic insights into microbial community assembly and succession of black-odor waters (BOWs). In the field-scale investigation, livestock breeding wastewater (56.7 ± 3.2%) was the most critical microbial source. Moreover, fermentation (27.1 ± 4.4%) was found to be the dominant function. Combined with laboratory experiments, the critical environmental factors, such as total organic carbon (30-100 mg/L), ammonia nitrogen (2.5-9 mg/L), initial dissolved oxygen (2-8 mg/L) and chlorophyll a (0-90 mg/L), impacted the intensity of blackening. The differentiation of ecological niches within the microbial community played a significant role in driving the blackening speed. In laboratory-scale experiments, the microbial ecological niche determined the blackening timing and dominations of the stochastic processes in the microbial assembly process (88 - 51%). The three stages, including the anaerobic degradation stage, blackening stage and slow recovery stage, were proposed to understand the assembly of the microbial communities. These findings enhance our understanding of microorganisms in BOWs and provide valuable insights for detecting and managing heavily organic polluted waters.
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Affiliation(s)
- Zhangmu Jing
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing, 100012, PR China; State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China; State Environmental Protection Key Laboratory of Estuarine and Coastal Environment, Chinese Research Academy of Environmental Science, Beijing, 100012, PR China
| | - Qingqian Li
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing, 100012, PR China; State Environmental Protection Key Laboratory of Estuarine and Coastal Environment, Chinese Research Academy of Environmental Science, Beijing, 100012, PR China
| | - Jinxia Lu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing, 100012, PR China; State Environmental Protection Key Laboratory of Estuarine and Coastal Environment, Chinese Research Academy of Environmental Science, Beijing, 100012, PR China
| | - Jiwei Ma
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing, 100012, PR China; State Environmental Protection Key Laboratory of Estuarine and Coastal Environment, Chinese Research Academy of Environmental Science, Beijing, 100012, PR China; School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, PR China
| | - Fanjin Ye
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing, 100012, PR China; State Environmental Protection Key Laboratory of Estuarine and Coastal Environment, Chinese Research Academy of Environmental Science, Beijing, 100012, PR China
| | - Shengqiang Tu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing, 100012, PR China; State Environmental Protection Key Laboratory of Estuarine and Coastal Environment, Chinese Research Academy of Environmental Science, Beijing, 100012, PR China
| | - Bin Dong
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China
| | - Xiaoling Liu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing, 100012, PR China; State Environmental Protection Key Laboratory of Estuarine and Coastal Environment, Chinese Research Academy of Environmental Science, Beijing, 100012, PR China
| | - Hongjie Gao
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing, 100012, PR China; State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China; State Environmental Protection Key Laboratory of Estuarine and Coastal Environment, Chinese Research Academy of Environmental Science, Beijing, 100012, PR China.
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Jiang M, Wang Y, Li J, Gao X. Review of carbon dot-hydrogel composite material as a future water-environmental regulator. Int J Biol Macromol 2024; 269:131850. [PMID: 38670201 DOI: 10.1016/j.ijbiomac.2024.131850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 03/23/2024] [Accepted: 04/23/2024] [Indexed: 04/28/2024]
Abstract
As water pollution and scarcity pose severe threats to the sustainable progress of human society, it is important to develop a method or materials that can accurately and efficiently detect pollutants and purify aquatic environments or exploit marine resources. The compositing of photoluminescent and hydrophilic carbon dots (CDs) with hydrogels bearing three-dimensional networks to form CD-hydrogel composites to protect aquatic environments is a "win-win" strategy. Herein, the feasibility of the aforementioned method has been demonstrated. This paper reviews the recent progress of CD-hydrogel materials used in aquatic environments. First, the synthesis methods for these composites are discussed, and then, the composites are categorized according to different methods of combining the raw materials. Thereafter, the progress in research on CD-hydrogel materials in the field of water quality detection and purification is reviewed in terms of the application of the mechanisms. Finally, the current challenges and prospects of CD-hydrogel materials are described. These results are expected to provide insights into the development of CD-hydrogel composites for researchers in this field.
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Affiliation(s)
- Minghao Jiang
- School of Water Conservancy and Civil Engineering, College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, PR China
| | - Yong Wang
- School of Water Conservancy and Civil Engineering, College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, PR China.
| | - Jichuan Li
- School of Water Conservancy and Civil Engineering, College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, PR China
| | - Xing Gao
- College of Sports and Human Sciences, Post-doctoral Mobile Research Station, Graduate School, Harbin Sport University, Harbin 150008, PR China.
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Zhang X, Wang H, Zhang W, Lv H, Lin X. Study on the purification mechanism for ammonia nitrogen in micro-polluted rivers by herbaceous plant - Rumex japonicus Houtt. CHEMOSPHERE 2024; 358:142154. [PMID: 38679183 DOI: 10.1016/j.chemosphere.2024.142154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 04/20/2024] [Accepted: 04/24/2024] [Indexed: 05/01/2024]
Abstract
Water eutrophication caused by nitrogen pollution is an urgent global issue that requires attention. The Qingyi River is a typical micro-polluted river in China. In this study, we took this river as the research object to investigate the nitrogen pollution purification capacity of a herbaceous plant, Rumex japonicus Houtt. (RJH). Compared to nitrate nitrogen (NO3--N) and nitrite nitrogen (NO2--N), RJH showed better purification performance on total nitrogen (TN), total phosphorus (TP) and ammonia nitrogen (NH4+-N), with a highest removal rate of 37.22%, 52.13%, and 100%, respectively. RJH could completely remove ammonia nitrogen and exhibit excellent resistance to pollutant interference when the initial concentration of ammonia nitrogen in the cultivation devices increased from 1 mg/L to 10 mg/L or in the actual river. This indicated the great application potential of RJH in ammonia nitrogen removal from natural micro-polluted rivers. In addition, combined effects of nitrification of roots, absorption of self-growth, stripping, and others contributed to nitrogen removal by RJH. Particularly, the nitrification of roots played a dominant role, accounting for 73.85% ± 8.79%. High-throughput sequencing results indicate that nitrifying bacteria accounted for over 75% of all bacterial species in RJH. Furthermore, RJH showed good growth status and strong adaptability. The correlation coefficients of its relative growth rate with chlorophyll A and the degradation rate of absorption were 0.9677 and 0.9594, respectively. Our research demonstrates that RJH is one of the excellent varieties for ammonia removal. This provides a very promising and sustainable method for purifying micro-polluted rivers.
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Affiliation(s)
- Xiangyang Zhang
- School of Water Conservancy and Transportation, Zhengzhou University, Henan, 450001, China
| | - Huiliang Wang
- School of Water Conservancy and Transportation, Zhengzhou University, Henan, 450001, China
| | - Wei Zhang
- School of Ecology and Environment, Zhengzhou University, Henan, 450001, China
| | - Hong Lv
- Yellow River Engineering Consulting Co., Ltd., Zhengzhou, 450003, China
| | - Xiaoying Lin
- School of Water Conservancy and Transportation, Zhengzhou University, Henan, 450001, China.
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Zhang Y, Liang Z, Li P, Lai J, Kang P, Huang R, Liang Y, Yu G. Piped-slow-release calcium nitrate dosing: A new approach to in-situ sediment odor control in rural areas. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 926:171993. [PMID: 38547967 DOI: 10.1016/j.scitotenv.2024.171993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 03/11/2024] [Accepted: 03/24/2024] [Indexed: 04/01/2024]
Abstract
Calcium nitrate addition is economically viable and highly efficient for the in-situ treatment of contaminated sediment and enhancement of surface water quality, particularly in rural areas. However, conventional nitrate addition technologies have disadvantages such as excessive nitrate release, sharp ammonium increase, and weakened sulfide oxidation efficiency owing to rapid nitrate injection into the sediment. To resolve these defects, we propose a piped-slow-release (PSR) calcium nitrate dosing method and investigate its treatment efficiency and underlying mechanisms. The results illustrated that PSR dosing had a longer half-life (t1/2 = 5.08 days) and a lower maximum apparent nitrate escape rate of 1.28 % than conventional nitrate injection and other dosing methods. In addition, the PSR managed the inorganic nitrogen release into the overlying water, and after the treatment, the nitrate, ammonium, and nitrite concentrations of 0 mg/L, 8.60 mg/L, and 0 mg/L on day 28 were close to those of the control group (0 mg/L, 8.76 mg/L, and 0 mg/L, respectively). Moreover, the PSR method maintained a moderate nitrate concentration of approximately 3000 mg/L in sediment interstitial water by its controlled-release design, thus greatly enhancing the sulfide oxidation efficiency by relieving the inhibitory effects of high nitrate concentrations, with 83.0 % sulfide being eradicated within 5 days. Sulfide-ferrous nitrate reduction (denitrification and dissimilatory nitrate reduction to ammonium) genera (e.g., Sulfurimonas, Thiobacillus, and Thioalkalispira) were successively enhanced and dominated the microbial community, and the related functional genes displayed high relative abundances. These results imply that the PSR dosing method for calcium nitrate, characterized by flexible operation, high efficiency, low cost, and controllable processes, is appropriate for remediating black-odorous sediment in rural areas.
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Affiliation(s)
- Yongchun Zhang
- Department of Environmental Science and Engineering, College of Natural Resource and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Ziyang Liang
- Department of Environmental Science and Engineering, College of Natural Resource and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Peiling Li
- Department of Environmental Science and Engineering, College of Natural Resource and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Jiangtian Lai
- Department of Environmental Science and Engineering, College of Natural Resource and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Peilun Kang
- Department of Environmental Science and Engineering, College of Natural Resource and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Rong Huang
- Department of Environmental Science and Engineering, College of Natural Resource and Environment, South China Agricultural University, Guangzhou 510642, China; Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Guangzhou 510642, China
| | - Yuhai Liang
- Department of Environmental Science and Engineering, College of Natural Resource and Environment, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Guangzhou 510642, China.
| | - Guangwei Yu
- Department of Environmental Science and Engineering, College of Natural Resource and Environment, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Guangzhou 510642, China.
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Shang Y, Wang X, Wu X, Dou H, Wei Q, Wang Q, Liu G, Sun G, Wang L, Zhang H. Bacterial and fungal community structures in Hulun Lake are regulated by both stochastic processes and environmental factors. Microbiol Spectr 2024; 12:e0324523. [PMID: 38602397 PMCID: PMC11064641 DOI: 10.1128/spectrum.03245-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 03/13/2024] [Indexed: 04/12/2024] Open
Abstract
Microorganisms are a crucial component of lake ecosystems and significant contributors to biogeochemical cycles. However, the understanding of how primary microorganism groups (e.g., bacteria and fungi) are distributed and constructed within different lake habitats is lacking. We investigated the bacterial and fungal communities of Hulun Lake using high-throughput sequencing techniques targeting 16S rRNA and Internal Transcribed Spacer 2 genes, including a range of ecological and statistical methodologies. Our findings reveal that environmental factors have high spatial and temporal variability. The composition and community structures vary significantly depending on differences in habitats. Variance partitioning analysis showed that environmental and geographical factors accounted for <20% of the community variation. Canonical correlation analysis showed that among the environmental factors, temperature, pH, and dissolved oxygen had strong control over microbial communities. However, the microbial communities (bacterial and fungal) were primarily controlled by the dispersal limitations of stochastic processes. This study offers fresh perspectives regarding the maintenance mechanism of bacterial and fungal biodiversity in lake ecosystems, especially regarding the responses of microbial communities under identical environmental stress.IMPORTANCELake ecosystems are an important part of the freshwater ecosystem. Lake microorganisms play an important role in material circulation and energy flow owing to their unique enzymatic and metabolic capacity. In this study, we observed that bacterial and fungal communities varied widely in the water and sediments of Hulun Lake. The primary factor affecting their formation was identified as dispersal limitation during stochastic processes. Environmental and geographical factors accounted for <20% of the variation in bacterial and fungal communities, with pH, temperature, and dissolved oxygen being important environmental factors. Our findings provide new insights into the responses of bacteria and fungi to the environment, shed light on the ecological processes of community building, and deepen our understanding of lake ecosystems. The results of this study provide a reference for lake management and conservation, particularly with respect to monitoring and understanding microbial communities in response to environmental changes.
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Affiliation(s)
- Yongquan Shang
- School of Life Sciences, Qufu Normal University, Qufu, Shandong, China
| | - Xibao Wang
- School of Life Sciences, Qufu Normal University, Qufu, Shandong, China
| | - Xiaoyang Wu
- School of Life Sciences, Qufu Normal University, Qufu, Shandong, China
| | - Huashan Dou
- Hulunbuir Academy of Inland Lakes in Northern Cold & Arid Areas, Hulunbuir, China
| | - Qinguo Wei
- School of Life Sciences, Qufu Normal University, Qufu, Shandong, China
| | - Qi Wang
- Hulunbuir Academy of Inland Lakes in Northern Cold & Arid Areas, Hulunbuir, China
| | - Gang Liu
- School of Life Sciences, Qufu Normal University, Qufu, Shandong, China
| | - Guolei Sun
- School of Life Sciences, Qufu Normal University, Qufu, Shandong, China
| | - Lidong Wang
- School of Life Sciences, Qufu Normal University, Qufu, Shandong, China
| | - Honghai Zhang
- School of Life Sciences, Qufu Normal University, Qufu, Shandong, China
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11
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Jing Z, Tu S, Yuan P, Liu X, Wang S, Dong B, Li Q, Gao H. The ecological role of microbiome at community-, taxonomic - and genome-levels in black-odorous waters. JOURNAL OF HAZARDOUS MATERIALS 2024; 467:133673. [PMID: 38340561 DOI: 10.1016/j.jhazmat.2024.133673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 12/17/2023] [Accepted: 01/29/2024] [Indexed: 02/12/2024]
Abstract
Black-odorous waters (BOWs) are heavily polluted waters where microbial information remains elusive mechanistically. Based on gene amplicon and metagenomics sequencing, a comprehensive study was conducted to investigate the microbial communities in urban and rural BOWs. The results revealed that microbial communities' assembly in urban and rural BOWs was predominantly governed by stochastic factors at the community level. At the taxonomic level, there were 62 core species (58.48%) in water and 207 core species (44.56%) in sediment across urban and rural areas. Notably, significant differences were observed in the functional genetic composition of BOWs between urban and rural areas. Specifically, rural areas exhibited an enhanced abundance of genes involved in nitrogen fixation, Fe2+ transport, and sulfate reduction. Conversely, urban areas showed higher abundances of some genes associated with carbon fixation, nitrification and denitrification. A sulfur-centered ecological model of microbial communities was constructed by integrating data from the three levels of analysis, and 14 near-complete draft genomes were generated, representing a substantial portion of the microbial community (35.04% in rural BOWs and 29.97% in urban BOWs). This research provides significant insights into the sustainable management and preservation of aquatic ecosystems affected by BOWs.
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Affiliation(s)
- Zhangmu Jing
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, PR China; State Environmental Protection Key Laboratory of Estuarine and Coastal Environment, Chinese Research Academy of Environmental Science, Beijing 100012, PR China
| | - Shengqiang Tu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, PR China; State Environmental Protection Key Laboratory of Estuarine and Coastal Environment, Chinese Research Academy of Environmental Science, Beijing 100012, PR China
| | - Peng Yuan
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, PR China; State Environmental Protection Key Laboratory of Estuarine and Coastal Environment, Chinese Research Academy of Environmental Science, Beijing 100012, PR China
| | - Xiaoling Liu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, PR China; State Environmental Protection Key Laboratory of Estuarine and Coastal Environment, Chinese Research Academy of Environmental Science, Beijing 100012, PR China
| | - Siyu Wang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, PR China; State Environmental Protection Key Laboratory of Estuarine and Coastal Environment, Chinese Research Academy of Environmental Science, Beijing 100012, PR China
| | - Bin Dong
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China
| | - Qingqian Li
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, PR China; State Environmental Protection Key Laboratory of Estuarine and Coastal Environment, Chinese Research Academy of Environmental Science, Beijing 100012, PR China
| | - Hongjie Gao
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, PR China; State Environmental Protection Key Laboratory of Estuarine and Coastal Environment, Chinese Research Academy of Environmental Science, Beijing 100012, PR China.
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12
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Zhao T, Huang S, Zhang Y, Chow AT, Chen P, Wang Y, Lu Y, Xiong J. Removal of sulfur and nitrogen pollutants in a sediment microbial fuel cell coupled with Vallisneria natans: Efficiency, microbial community structure, and functional genes. CHEMOSPHERE 2024; 354:141667. [PMID: 38485002 DOI: 10.1016/j.chemosphere.2024.141667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 02/26/2024] [Accepted: 03/06/2024] [Indexed: 03/22/2024]
Abstract
The rapid development of the economy has led to an increase in the sulfur and nitrogen load in surface water, which has the potential to cause river eutrophication and the emission of malodorous gases. A lab-scale sediment microbial fuel cell coupled with Vallisneria natans (P-SMFC) was designed for surface water remediation. The enhancement of pollutant removal performance of P-SMFC was evaluated in contrast to the SMFC system without plants (SMFC), the open-circuit control system with plants (C-P), and the open-circuit control system without plants (C-S), while illustrating the mechanisms of the sulfur and nitrogen transformation process. The results demonstrated that the effluent and sediment of P-SMFC had lower concentrations of sulfide compared to other systems. Furthermore, P-SMFC exhibited higher removal efficiency for COD (73.1 ± 8.7%), NH4+-N (80.5 ± 19.8%), and NO3--N (88.5 ± 11.8%) compared to other systems. The closed-circuit conditions and growth of Vallisneria natans create a favorable ecological niche for functional microorganisms involved in power generation, sulfur oxidation, and nitrogen transformation. Additionally, metagenomic analysis revealed that multifunctional bacteria possessing both denitrification and sulfur oxidation genes, such as Thiobacillus, Dechloromonas, and Bacillus, may play simultaneous roles in metabolizing sulfur and nitrogen, thus serving as integral factors in maintaining the performance of P-SMFC. In summary, these findings provide a theoretical reference for the concurrent enhancement of sulfur and nitrogen pollutants removal in P-SMFC and will facilitate its practical application in the remediation of contaminated surface water.
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Affiliation(s)
- Tianyu Zhao
- School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou, 510006, PR China.
| | - Shaobin Huang
- School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou, 510006, PR China.
| | - Yongqing Zhang
- School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou, 510006, PR China.
| | - Alex T Chow
- Earth and Environmental Science Program, The Chinese University of Hong Kong, Hong Kong SAR, PR China.
| | - Pengfei Chen
- School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou, 510006, PR China.
| | - Yanling Wang
- School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou, 510006, PR China.
| | - Yao Lu
- School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou, 510006, PR China.
| | - Jianhua Xiong
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, PR China.
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13
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Zeng Y, Xu L, Su J, Liu S, Ali A, Zhang P, Cao S. Denitrification driven by additional ferrous (Fe 2+) and manganous (Mn 2+) and removal mechanism of tetracycline and cadmium (Cd 2+) by biogenic Fe-Mn oxides. ENVIRONMENTAL RESEARCH 2024; 246:118159. [PMID: 38218519 DOI: 10.1016/j.envres.2024.118159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 01/05/2024] [Accepted: 01/06/2024] [Indexed: 01/15/2024]
Abstract
Zoogloea sp. MFQ7 achieved excellent denitrification of 91.71% at ferrous to manganous ratio (Fe/Mn) of 3:7, pH of 6.5, nitrate concentration of 25 mg L-1 and carbon to nitrogen ratio of 1.5. As the Fe/Mn ratio increasd, the efficiency of nitrate removal gradually decreased, indicating that strain MFQ7 had a higher affinity for Mn2+ than Fe2+. In situ generated biogenic Fe-Mn oxides (BFMO) contained many iron-manganese oxides (MnO2, Mn3O4, FeO(OH), Fe2O3, and Fe3O4) as well as reactive functional groups, which play an significant part in tetracycline (TC) and cadmium (Cd2+) adsorption. The adsorption of TC and Cd2+ by BFMO can better fit the pseudo-second-order and Langmuir models. In addition, multiple characterization results of before and after adsorption indicated that the removal mechanism of BFMO on TC and Cd2+ was probably surface complexation adsorption and redox reactions.
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Affiliation(s)
- Yuxin Zeng
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Liang Xu
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Junfeng Su
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China.
| | - Shuyu Liu
- School of Environment and Chemistry Engineering, Shanghai University, Shanghai, 200444, China.
| | - Amjad Ali
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Peng Zhang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Shumiao Cao
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
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14
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Liu X, Li X, Zhang X, Zhao H, Wang C, Zhu H, Xiao X, Cao S, Liu R. Research on the purification effect of major pollutants in water by modular constructed wetlands with different filler combinations. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2024; 89:2090-2104. [PMID: 38678411 DOI: 10.2166/wst.2024.107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 03/18/2024] [Indexed: 04/30/2024]
Abstract
Constructed wetland systems have been widely used in China due to their advantages of good treatment effect, low cost and environmental friendliness. However, traditional constructed wetlands have challenges in application such as deactivation due to filler clogging, difficulty in filler replacement and low adaptability. To address the above problems, this research proposes a modular filler design constructed wetland based on the concept of assembly construction, which can quickly replace the clogged filler without destroying the overall structure of the wetland. Four commonly used fillers were selected and applied to the pilot system of the assembled constructed wetland in this study, in order to investigate the purification effect of the constructed wetland system with different filler module combinations (CW1, CW2, CW3) on the simulated wastewater. The results showed that the filler combination CW1 was the best for the removal of NH4+-N, and for TP and COD, CW2 has the best removal effect. Therefore, the assembled constructed wetland is adjustable and substantially reduces the maintenance cost, which provides technical guidance for its application in engineering.
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Affiliation(s)
- Xiaoting Liu
- PowerChina Hubei Electric Engineering Co., Ltd, Wuhan 430040, China
| | - Xuhao Li
- School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China; Co-first author
| | - Xiangling Zhang
- School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China E-mail:
| | - Hui Zhao
- PowerChina Hubei Electric Engineering Co., Ltd, Wuhan 430040, China
| | - Chen Wang
- School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China
| | - Hao Zhu
- PowerChina Hubei Electric Engineering Co., Ltd, Wuhan 430040, China
| | - Xinlu Xiao
- School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China
| | - Shilong Cao
- School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China
| | - Rang Liu
- PowerChina Hubei Electric Engineering Co., Ltd, Wuhan 430040, China
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15
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Liu YE, Luo XJ, Huang CC, Lu Q, Wang S, Mai BX. Insights into the occurrence, spatial distribution, and ecological implications of organophosphate triesters in surface sediments from polluted urban rivers across China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 915:170108. [PMID: 38232851 DOI: 10.1016/j.scitotenv.2024.170108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 12/26/2023] [Accepted: 01/09/2024] [Indexed: 01/19/2024]
Abstract
Organophosphate triesters (tri-OPEs) are a kind of widespread contaminants in the world, particularly in China, which is a major producer and user of tri-OPEs. However, tri-OPE pollution in urban river sediments in China remains unclear. In current work, we carried out the first nationwide investigation to comprehensively monitor 10 conventional and five emerging tri-OPEs in sediments of 173 black-odorous urban rivers throughout China. Concentrations of 10 conventional and five emerging tri-OPEs were 3.8-1240 ng/g dw (mean: 253 ng/g dw) and 0.21-1107 ng/g dw (68 ng/g dw), respectively, and significantly differed among the cities sampled but generally decreased from Northeast and East China to Central and West China. These spatial patterns suggest that tri-OPE pollution was mainly from local sources and was controlled by the industrial and economic development levels in these four areas, as indicated by the significant correlations between tri-OPE concentrations and gross domestic production, gross industrial output, and daily wastewater treatment capacity. Although the tri-OPE composition varied spatially at different sites, which indicated different tri-OPE input patterns, it was commonly dominated by tris(2-chloroethyl) phosphate, tris(2-ethylhexyl) phosphate, and tris(1-chloro-2-propyl) phosphate (conventional tri-OPEs) and bisphenol A-bis(diphenyl phosphate) and isodecyl diphenyl phosphate (emerging tri-OPEs). A risk assessment indicated that tri-OPEs in most sampling sediments had a low to moderate risk to aquatic organisms.
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Affiliation(s)
- Yin-E Liu
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China; State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Resources Utilization and Protection, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Xiao-Jun Luo
- State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Resources Utilization and Protection, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.
| | - Chen-Chen Huang
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China; State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Resources Utilization and Protection, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Qihong Lu
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou 510006, China
| | - Shanquan Wang
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou 510006, China
| | - Bi-Xian Mai
- State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Resources Utilization and Protection, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
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16
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Liao L, Yu D, Xu L, Hu Q, Liang T, Chen L, Zhu Q, Liu S, Zhong A. Submersed macrophytes Vallisneria natans and Vallisneria spinulosa improve water quality and affect microbial communities in sediment and water columns. Heliyon 2024; 10:e25942. [PMID: 38371958 PMCID: PMC10873746 DOI: 10.1016/j.heliyon.2024.e25942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/19/2024] [Accepted: 02/05/2024] [Indexed: 02/20/2024] Open
Abstract
Healthy aquatic ecosystems are essential for human beings. However, anthropogenic activities severely worsen water quality. In this study, using assembling mesocosms, we developed an efficient and easy-to-handle method to monitor the water quality by measuring the electrical conductivity (EC) of water. Our data demonstrate that the growth of two submersed macrophytes, Vallisnerianatans and Vallisneria spinulosa, improves water quality by decreasing EC. Furthermore, using high-throughput DNA sequencing, we analyzed the microbial community abundance and structure in sediment and water columns with or without plant growth. We generated 33,775 amplicon sequence variants from 69 samples of four sediment groups (BkM, CtM, VnR, and VsR) and three water column sample groups (CtW, VnW, and VsW). The results show that the relative abundance of bacteria was higher in the sediment than in the water column. Moreover, the diversity and composition of microbiomes were altered by Vallisneria spp. growth, and the α-diversity of the microbial communities decreased due to submersed macrophytes in both the sediment and water columns. The β-diversity of the microbial communities also varied significantly with or without Vallisneria spp. growth for both the sediment and water columns.
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Affiliation(s)
| | | | - Lei Xu
- Lushan Botanical Garden, Chinese Academy of Science, Jiujiang, 332900, Jiangxi, China
| | - Qian Hu
- Lushan Botanical Garden, Chinese Academy of Science, Jiujiang, 332900, Jiangxi, China
| | - Tongjun Liang
- Lushan Botanical Garden, Chinese Academy of Science, Jiujiang, 332900, Jiangxi, China
| | - Ludan Chen
- Lushan Botanical Garden, Chinese Academy of Science, Jiujiang, 332900, Jiangxi, China
| | - Qiuping Zhu
- Lushan Botanical Garden, Chinese Academy of Science, Jiujiang, 332900, Jiangxi, China
| | - Songping Liu
- Lushan Botanical Garden, Chinese Academy of Science, Jiujiang, 332900, Jiangxi, China
| | - Aiwen Zhong
- Lushan Botanical Garden, Chinese Academy of Science, Jiujiang, 332900, Jiangxi, China
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17
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Chen J, Li H, Felix M, Chen Y, Zheng K. >Water quality prediction of artificial intelligence model: a case of Huaihe River Basin, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:14610-14640. [PMID: 38273086 DOI: 10.1007/s11356-024-32061-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Accepted: 01/15/2024] [Indexed: 01/27/2024]
Abstract
Accurate prediction of water quality contributes to the intelligent management of water resources. Water quality indices have time series characteristics and nonlinearity, but the existing models only focus on the forward time series when long short-term memory (LSTM) is introduced and do not consider the parallel computation on the model. Owing to this, a new neural network called LSTM-multihead attention (LMA) was constructed to predict water quality, using long short-term memory to process time series data and multihead attention for parallel computing and extracting feature information. Additionally, water quality indices have the issues of multiple data types and complex data correlations, as well as missing data and abnormal data problems in water quality data. In order to solve these problems, this study proposes a water quality prediction model called GRA-LMA-based linear interpolation, gray relational analysis and LMA. Two experiments are carried out to verify the predictive performance of the GRA-LMA with the water quality data of the Huaihe River Basin as a case study sample. The first experiment focuses on data processing, including the processing of missing data and abnormal data of water quality data, and the correlation analysis of water quality indices. Linear interpolation is adapted to process the missing data, while a combination of boxplot and histogram is adopted to analyze and eliminate the abnormal data, which is then repaired the abnormal data with linear interpolation. The gray relational analysis is adopted to calculate the correlation between different water quality indices, and water quality indices with high correlation are retained to determine the input variables of the water quality prediction model. The data processing results demonstrate that repairs can be made using linear interpolation without altering the pattern of data change and the model by using the gray relational analysis to reduce the quantity of data it needs as input. In the second experiment, the predictive capacity of GRA-LMA and existing models such as backpropagation neural network (BP), recurrent neural network (RNN), long short-term memory (LSTM), and gate recurrent unit (GRU) was evaluated and compared using different numerical and graphical performance evaluation metrics. Comparative experimental results show that the mean square error of pH, dissolved oxygen, chemical oxygen demand, ammonia nitrogen, electrical conductivity, turbidity, total phosphorus, and total nitrogen of GRA-LMA is reduced to 0.05890, 0.40196, 0.32454, 0.04368, 14.71003, 8.13252, 0.01558, and 0.14345. The results indicate that GRA-LMA has superior adaptability for predicting various water quality indices and can significantly lower the induced prediction error.
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Affiliation(s)
- Jing Chen
- School of Electrical and Information Engineering, Anhui University of Science and Technology, No. 168, Taifeng Road, Huainan, 232001, China
- Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool, L69 3BX, UK
| | - Haiyang Li
- School of Electrical and Information Engineering, Anhui University of Science and Technology, No. 168, Taifeng Road, Huainan, 232001, China.
| | - Manirankunda Felix
- School of Electrical and Information Engineering, Anhui University of Science and Technology, No. 168, Taifeng Road, Huainan, 232001, China
| | - Yudi Chen
- Faculty of Science and Engineering, University of Manchester, Oxford RD, Manchester, M139PL, UK
| | - Keqiang Zheng
- School of Electrical and Information Engineering, Anhui University of Science and Technology, No. 168, Taifeng Road, Huainan, 232001, China
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Peter PO, Ifon BE, Nkinahamira F, Lasisi KH, Li J, Hu A, Yu CP. Harnessing the composition of dissolved organic matter in lagoon sediment in association with rare earth elements using fluorescence and UV-visible absorption spectroscopy. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 908:168139. [PMID: 37890635 DOI: 10.1016/j.scitotenv.2023.168139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 10/06/2023] [Accepted: 10/24/2023] [Indexed: 10/29/2023]
Abstract
Dissolved Organic Matter (DOM) plays a pivotal role in influencing metal binding and mobility within lagoon sediments. However, there exists a gap in understanding the compositional alterations of DOM concerning Rare Earth Elements (REEs) across varying pollution gradients. This study aimed to characterize DOM and examine its relationship with REEs in sediment cores from different pollution levels in Yundang Lagoon, China using excitation-emission matrix-parallel factor analysis (EEM-PARAFAC). The results raveled four distinct fluorescent components. Among these, two correspond to humic-like substances, while the remaining two are attributed to protein-like substances. Remarkably, the prevalence of protein-like compounds was observed to exceed 58% of the total fluorescence intensity across all the investigated sites. Furthermore, a substantial discrepancy in total fluorescence intensity was detected between the Songbai Lake and the Inner and Outer Lagoon, indicating a variance in DOM content. In terms of REEs, the average concentration of total REEs was notably elevated within the Songbai Lake sediments (318.36 mg/kg) as compared to the Inner and Outer Lagoon sediments (296.36 and 278.05 mg/kg, respectively). Of significance is the enrichment of Light Rare Earth Elements (LREEs), particularly Ce, La, Pr, and Nd, over Heavy REEs (HREEs) across all surveyed locations. Intriguingly, a coherent trend emerged wherein the fluorescence intensity and LREE concentrations exhibited a synchronized increase from Outer to Inner to Songbai Lake core sediments. This observation substantiates a strong correlation between DOM content and pollution levels (p < 0.05). By shedding light on the intricate interplay between DOM and REEs within urban aquatic sediments, this study imparts novel insights which enrich our comprehension of urban environmental dynamics.
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Affiliation(s)
- Philomina Onyedikachi Peter
- CAS Key Laboratory of Urban Pollutant Conversion, Fujian Key Laboratory of Watershed Ecology Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Binessi Edouard Ifon
- CAS Key Laboratory of Urban Pollutant Conversion, Fujian Key Laboratory of Watershed Ecology Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - François Nkinahamira
- State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, China
| | - Kayode Hassan Lasisi
- CAS Key Laboratory of Urban Pollutant Conversion, Fujian Key Laboratory of Watershed Ecology Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiangwei Li
- CAS Key Laboratory of Urban Pollutant Conversion, Fujian Key Laboratory of Watershed Ecology Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Anyi Hu
- CAS Key Laboratory of Urban Pollutant Conversion, Fujian Key Laboratory of Watershed Ecology Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.
| | - Chang-Ping Yu
- CAS Key Laboratory of Urban Pollutant Conversion, Fujian Key Laboratory of Watershed Ecology Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.
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Gao C, Xu Z, Yan X, Wang G, Lin X, Zhang J, Guo X. Coupling the measures of pollution source control and water replenishment to improve water quality in the catchment scale of Qianshan River Basin. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 341:122899. [PMID: 37967714 DOI: 10.1016/j.envpol.2023.122899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 11/01/2023] [Accepted: 11/07/2023] [Indexed: 11/17/2023]
Abstract
With the development of the economy, the problem of urban black odorous water bodies has become increasingly significant, having a serious impact on the environment. As important means of remediating aquatic environments, pollution source control and water replenishment are of great significance in improving water quality. This study takes the Qianshan River Basin in Zhuhai City as its study area to simulate their effects on the improvement of water quality. A coupled model of water quantity and quality in Qianshan River Basin was constructed using MIKE11to analyze the water quality compliance rate, with sewage interception rates of 85%, 90%, and 95%, and to investigate the effect of pollution source control on the improvement of the aquatic environment. Using different sewage interception rates, the amount of water replenishment was calculated in order to meet water quality standards, the water replenishment scheme was determined via river-specific and time-specific methods, and the model was used to analyze the replenishment effect of the scheme. The results show that increasing the sewage interception rate can significantly improve the COD compliance rate, and improve the NH3-N and TP compliance rate; however, the enhancement effect is not sufficiently significant. When a sewage interception rate of 95% is implemented, there are still five rivers with a low NH3-N compliance rate, and six rivers with low a TP compliance rate. Comparing the water replenishment effect under different sewage interception rates of 85% and 95%, the water replenishment program alongside a sewage interception rate of 95% can effectively improve the aquatic environment and the water quality essentially meets the standard under different rainfall conditions; this demonstrates that the program presented herein can be used as the aquatic environment remediation program of choice for the Qianshan River Basin.
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Affiliation(s)
- Cheng Gao
- College of Hydrology and Water Resources, Hohai University, Nanjing, 210098, China.
| | - Zhantuo Xu
- College of Hydrology and Water Resources, Hohai University, Nanjing, 210098, China
| | - Xiaoju Yan
- College of Hydrology and Water Resources, Hohai University, Nanjing, 210098, China
| | - Guodong Wang
- College of Hydrology and Water Resources, Hohai University, Nanjing, 210098, China
| | - Xinping Lin
- College of Hydrology and Water Resources, Hohai University, Nanjing, 210098, China
| | - Jichen Zhang
- College of Hydrology and Water Resources, Hohai University, Nanjing, 210098, China
| | - Xin Guo
- College of Hydrology and Water Resources, Hohai University, Nanjing, 210098, China
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20
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Xu W, Wang W, Deng B, Liu Q. A review of the formation conditions and assessment methods of black and odorous water. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 196:42. [PMID: 38102303 DOI: 10.1007/s10661-023-12222-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Accepted: 12/07/2023] [Indexed: 12/17/2023]
Abstract
Black and odorous water is an extreme pollution phenomenon. This article reviews the formation process, formation conditions, and evaluation methods of black and odorous water. The results indicate that N, P, and TOC are the key nutrients inducing black and odorous water while S, Fe, and Mn are key elements forming blackening and odorizing pollutants. In addition, Cyanobacteria, Proteobacteria, Firmicutes, Verrucomicrobia, Planctomycetes, and Actinobacteria participate in the biogeochemistry cycles of key elements and play important roles in the blackening and odorizing process of water. The black and odorous thresholds that need further verification are as follows: 1.0 g/L of organic matrix, 2.0-8.0 mg/L of NH3-N, 0.6-1.2 mg/L of TP, 0.05 mg/L of Fe2+, 0.3 mg/L of Mn2+, 1.2-2.0 mg/L of DO, and -50 to 50 mV of the ORP. In order to propose a universal assessment method, it is suggested that NH3-N, DO, COD, BOD, and TP serve as the assessment indicators, and the levels of pollutions are I (not black odor), II (mild black odor), III (moderate black odor), IV (severe black odor), and inferior IV (extremely black odor).
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Affiliation(s)
- Weihao Xu
- Eco-Environmental Monitoring and Research Center, Pearl River Valley and South China Sea Ecology and Environment Administration, Ministry of Ecology and Environment, Guangzhou, 510611, China
| | - Weiwei Wang
- Eco-Environmental Monitoring and Research Center, Pearl River Valley and South China Sea Ecology and Environment Administration, Ministry of Ecology and Environment, Guangzhou, 510611, China
| | - Binbin Deng
- Eco-Environmental Monitoring and Research Center, Pearl River Valley and South China Sea Ecology and Environment Administration, Ministry of Ecology and Environment, Guangzhou, 510611, China
| | - Qiuxin Liu
- Eco-Environmental Monitoring and Research Center, Pearl River Valley and South China Sea Ecology and Environment Administration, Ministry of Ecology and Environment, Guangzhou, 510611, China.
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21
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An W, Hu X, Chen H, Wang Q, Zheng Y, Wang J, Di J. Experimental study on the treatment of AMD by SRB immobilized particles containing "active iron" system. PLoS One 2023; 18:e0295616. [PMID: 38079416 PMCID: PMC10712877 DOI: 10.1371/journal.pone.0295616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 11/26/2023] [Indexed: 12/18/2023] Open
Abstract
The inhibition and toxicity of high acidity and heavy metals on sulfate-reducing bacteria in acid mine drainage (AMD) were targeted. Highly active SRB immobilized particles were prepared using SRB, warm sticker wastes (iron powders), corncobs, and Maifan stones as the main matrix materials, employing microbial immobilization technology. The repair ability and reusability of highly active immobilized particles for AMD were explored. The results indicate that the adaptability of immobilized particles to AMD varied under different initial conditions, such as pH, Mn2+, and SO42-. The adsorption process of immobilized particles on Mn2+ follows the quasi-second-order kinetic model, suggesting that it involves both physical and chemical adsorption. The maximum adsorption capacity of immobilized particles for Mn2+ is 3.878 mg/g at a concentration of 2.0 mg/L and pH 6. On the other hand, the reduction process of immobilized particles on SO42- adheres to the first-order reaction kinetics, indicating that the reduction of SO42- is primarily driven by the dissimilation reduction of SRB. The maximum reduction rate of SO42- by immobilized particles is 94.23% at a concentration of 800 mg/L and pH 6. A layered structure with a flocculent appearance formed on the surface of the immobilized particles. The structure's characteristics were found to be consistent with sulfate green rust (FeII4FeIII2(OH)12SO4·8H2O). The chemisorption, ion exchange, dissimilation reduction, and surface complexation occurring between the matrices in the immobilized particles can enhance the alkalinity of AMD and decrease the concentration of heavy metals and sulfates. These results are expected to offer novel insights and materials for the treatment of AMD using biological immobilization technology, as well as improve our understanding of the mechanisms behind biological and abiotic enhanced synergistic decontamination.
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Affiliation(s)
- Wenbo An
- School of Civil Engineering, Liaoning Technical University, Fuxin, China
- School of Mining Engineering, China University of Mining and Technology, Xuzhou, China
| | - Xuechun Hu
- School of Civil Engineering, Liaoning Technical University, Fuxin, China
| | - He Chen
- School of Mechanics and Engineering, Liaoning Technical University Fuxin, Fuxin, China
| | - Qiqi Wang
- School of Civil Engineering, Liaoning Technical University, Fuxin, China
| | - Yonglin Zheng
- School of Civil Engineering, Liaoning Technical University, Fuxin, China
| | - Jiahui Wang
- School of Civil Engineering, Liaoning Technical University, Fuxin, China
| | - Junzhen Di
- School of Civil Engineering, Liaoning Technical University, Fuxin, China
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22
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Sun YL, Wei W, Ngo HH, Guo WS, Zhang XN, Ni BJ, Zhuang WQ, Wang HL. Effect of hydraulic regime on sulfur-packed bed performance: Denitrification and disproportionation. ENVIRONMENTAL RESEARCH 2023; 238:117213. [PMID: 37776937 DOI: 10.1016/j.envres.2023.117213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 09/25/2023] [Accepted: 09/26/2023] [Indexed: 10/02/2023]
Abstract
Sulfur-packed beds (SPBs) have been increasingly incorporated into constructed wetland systems to overcome limitations in achieving satisfactory nitrate removal efficiency. However, the underlying impact of hydraulic regimes on SPB performance remains understudied. This study investigated the performance of a pilot-scale SPB, encompassing sulfur autotrophic denitrification (SAD) and sulfur disproportionation (SDP) processes, under various horizontal flow (HF) and vertical flow (VF) regimes. The HF regime exhibited superior SAD efficiency, achieving 3.1-4.4 mg-N/L of nitrate removal compared to 0.9-2.8 mg-N/L under VF regimes. However, greater sulfide production of 3.8-5.6 mg/L was observed, in contrast to only 1.5-2.3 mg/L under VF regimes when SDP occurred. Employing current computational fluid dynamics simulations could predict general regimes but lacked precision in detailing sulfur layer dynamics. In contrast, determining the spatial distribution of SAD substrates and SDP products offered a viable solution, revealing stagnate, short-circuit, and back flows. Moreover, the feasibility of an aeration approach to reduce sulfide emissions below 0.5 mg/L in case of accidental SDP occurrence was confirmed. This study offers a method for assessing detailed hydraulic regimes within SPBs. Additionally, it provides guidance on optimizing the packing of sulfur-based materials when implementing SPBs in constructed wetland systems and presents a strategy for mitigating excessive sulfide emissions.
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Affiliation(s)
- Yi-Lu Sun
- Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China
| | - Wei Wei
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, New South Wales 2007, Australia
| | - Huu Hao Ngo
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, New South Wales 2007, Australia
| | - Wen Shan Guo
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, New South Wales 2007, Australia
| | - Xue-Ning Zhang
- Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China.
| | - Bing-Jie Ni
- School of Civil and Environmental Engineering, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Wei-Qin Zhuang
- Department of Civil and Environmental Engineering, Faculty of Engineering, The University of Auckland, Auckland, 1010, New Zealand
| | - Han-Lin Wang
- Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China.
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23
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Chen X, Xu G, Xiong P, Peng J, Fang K, Wan S, Wang B, Gu F, Li J, Xiong H. Dry and wet seasonal variations of the sediment fungal community composition in the semi-arid region of the Dali River, Northwest China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:123694-123709. [PMID: 37993647 DOI: 10.1007/s11356-023-31042-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 11/09/2023] [Indexed: 11/24/2023]
Abstract
Microbial communities play an important role in water quality regulation and biogeochemical cycling in freshwater ecosystems. However, there has been a lack of research on the seasonal variation of sediment microorganisms in the sediments of small river basins in typical semi-arid region. In this study, high-throughput DNA sequencing was used to investigate the fungal community and its influencing factors in the sediment of the Dali River in the dry and wet seasons. The results showed that there were obvious seasonal differences in fungal alpha diversity. The diversity and richness of fungi in the dry season were greater than that in the wet season, but the evenness of fungi in the dry season was lower than that in the wet season. In addition, Ascomycota and Basidiomycota were the most important phyla in the Dali River fungal community, but their distributions showed clear seasonal differences. In the dry season, the relative abundance of Ascomycota and Basidiomycota were 12.34-46.42% and 17.59-27.20%, respectively. In the wet season, the relative abundances of these two phyla were 24.33-36.56% and 5.75-12.26%, respectively. PICRUSt2 was used to predict the metabolic function of fungal community in the sediment, and it was found that at the first level, the proportion of biosynthesis in the dry season was higher than that in the wet season. The ecological network structure showed that the fungal community in the wet season was more complex and stable than that in the dry season. The characteristic fungi in the dry season sediment were chytrid fungi in the family Rhizophydiaceae and the order Rhizophydiales, whereas those in the wet season sediment were in the orders Eurotiales and Saccharomycetales. Canonical correspondence analysis (CCA) showed that the physicochemical properties of water and sediment together explained a greater proportion of the dry-season fungal community changes than of the wet-season changes. In the dry season, temperature and ammonia nitrogen in the water were the main factors affecting the change of fungal community, whereas in the wet season, total nitrogen concentration of the water, electrical conductivity, total organic carbon and available phosphorus of the sediment, pH, and temperature were the main factors affecting the changes in fungal community composition. The results of this study enhanced our understanding of microbial communities in semi-arid river ecosystems, and highlight the importance of the management and protection in river ecosystems.
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Affiliation(s)
- Xin Chen
- Key Laboratory of National Forestry Administration on Ecological Hydrology and Disaster Prevention in Arid Regions, Xi'an University of Technology, Xi'an, 710048, Shaanxi, China
| | - Guoce Xu
- Key Laboratory of National Forestry Administration on Ecological Hydrology and Disaster Prevention in Arid Regions, Xi'an University of Technology, Xi'an, 710048, Shaanxi, China.
| | - Ping Xiong
- Shaanxi Forestry Survey and Planning Institute, Xi'an, 710082, Shaanxi, China
| | - Jianbo Peng
- Shaanxi Forestry Survey and Planning Institute, Xi'an, 710082, Shaanxi, China
| | - Kang Fang
- Key Laboratory of National Forestry Administration on Ecological Hydrology and Disaster Prevention in Arid Regions, Xi'an University of Technology, Xi'an, 710048, Shaanxi, China
| | - Shun Wan
- Key Laboratory of National Forestry Administration on Ecological Hydrology and Disaster Prevention in Arid Regions, Xi'an University of Technology, Xi'an, 710048, Shaanxi, China
| | - Bin Wang
- Key Laboratory of National Forestry Administration on Ecological Hydrology and Disaster Prevention in Arid Regions, Xi'an University of Technology, Xi'an, 710048, Shaanxi, China
| | - Fengyou Gu
- Key Laboratory of National Forestry Administration on Ecological Hydrology and Disaster Prevention in Arid Regions, Xi'an University of Technology, Xi'an, 710048, Shaanxi, China
| | - Jing Li
- Key Laboratory of National Forestry Administration on Ecological Hydrology and Disaster Prevention in Arid Regions, Xi'an University of Technology, Xi'an, 710048, Shaanxi, China
| | - Haijing Xiong
- Key Laboratory of National Forestry Administration on Ecological Hydrology and Disaster Prevention in Arid Regions, Xi'an University of Technology, Xi'an, 710048, Shaanxi, China
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24
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Zhu Y, Li Y, Wei Y, Norgbey E, Chen Y, Li R, Wang C, Cheng Y, Bofah-Buoh R. Impact of Eucalyptus residue leaching on iron distribution in reservoir sediments assessed by high-resolution DGT technique. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:125718-125730. [PMID: 38001297 DOI: 10.1007/s11356-023-31116-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 11/15/2023] [Indexed: 11/26/2023]
Abstract
Blackwater occurs every winter in reservoirs with Eucalyptus plantations. The complexation reaction between ferric iron (Fe3+) and Eucalyptus leachate tannic acid from logging residues (especially leaves) is the vital cause of water blackness. However, the effect of Eucalyptus leaf leaching on the dynamic of iron in sediments and its contribution to reservoir blackwater remain unclear. In this study, two experiments were conducted to simulate the early decomposition processes of exotic Eucalyptus and native Pinus massoniana leaves in water (LW) and water-sediment (LWS) systems. In LW, high concentrations of tannic acid (>45.25 mg/L) rapidly leached from the Eucalyptus leaves to the water column, exceeding those of Pinus massoniana leaves (<1.80 mg/L). The chrominance increased from 5~10 to 80~140, and the water body finally appeared brown instead of black after the leaching of Eucalyptus leaves. The chrominance positively correlated with tannic acid concentrations (R=0.970, p<0.01), indicating that tannic acid was vital for the water column's brown color. Different in LWS, blackwater initially emerged near the sediment-water interface (SWI) and extended upward to the entire water column as Eucalyptus leaves leached. Dissolved oxygen (DO) and transmission values in the overlying water declined simultaneously (R>0.77, p<0.05) and were finally below 2.29 mg/L and 10%, respectively. During the leaching of Eucalyptus leaves, the DGT-labile Fe2+ in sediments migrated from deep to surface layers, and the diffusive fluxes of Fe2+ at the SWI increased from 12.42~19.93 to 18.98~26.28 mg/(m2·day), suggesting that sediment released abundant Fe3+ into the aerobic overlying water. Fe3+ was exposed to high concentrations of tannic acid at the SWI and immediately generated the black Fe-tannic acid complex. The results indicated that the supplement of dissolved Fe3+ from sediments is a critical factor for the periodic blackwater in the reservoirs with Eucalyptus plantations. Reducing the cultivation of Eucalyptus in the reservoir catchment is one of the effective ways to alleviate the reservoir blackwater.
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Affiliation(s)
- Ya Zhu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
| | - Yiping Li
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China.
| | - Yao Wei
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
| | - Eyram Norgbey
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
| | - Yu Chen
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
| | - Ronghui Li
- Key Laboratory of Disaster Prevention and Structural Safety, Ministry of Education, College of Civil Engineering and Architecture, Guangxi University, Nanning, 530000, China
| | - Can Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
| | - Yu Cheng
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
| | - Robert Bofah-Buoh
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
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Yan Q, Liu Y, Qu C, Song J, Mangi AH, Zhang B, Zhou J, Cai Z. Provenance analyses of silted sediments in Shenzhen Bay: Insights based on rare earth elements and stable isotopes. Heliyon 2023; 9:e21559. [PMID: 38027950 PMCID: PMC10658256 DOI: 10.1016/j.heliyon.2023.e21559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Revised: 10/24/2023] [Accepted: 10/24/2023] [Indexed: 12/01/2023] Open
Abstract
Shenzhen Bay (SZB) in southern China is a typical eutrophic area, with internal pollution from its sediments representing an important nutrient source. However, the transport paths and sources of sediments in SZB remain unclear, making it difficult to analyze the nutritional budget and propose effective sediment management strategies. To address this, we linked a sediment fingerprinting technique to a Bayesian mixing model (MixSIAR) and conducted provenance analyses. We collected particle samples from SZB sediment and surrounding areas, including the Shenzhen River (SZR), Pearl River Estuary (PRE), and the northern South China Sea (SCS). Two groups of natural tracers were measured to trace different phases of sediments: (1) C and N parameters for the fates of the organic phase of sediments, and (2) rare earth element (REE) patterns for the provenance of mineral fragments. The results showed that the concentrations of total organic C and total N were 0.89-1.44 % and 0.05-0.13 %, respectively. MixSIAR suggested that fluvial inputs from SZR and PRE contributed 46.6 % and 30.3 % of organic matter, respectively. The organic matter in the PRE mainly originated from sewage and the upper reaches of the Pearl River. The concentration range of REEs in SZB sediments was 153.12-480.09 mg/kg with clear enrichment for light REE. MixSIAR results showed that the mineral fragments mainly originated from the outer bay (SCS and PRE, which contributed 57.2 % and 32.7 %, respectively). These results indicate that organic pollution follows a different path from the inorganic base, which is mainly related to anthropogenic input from land. This study highlights that complex sediment transport processes and pollution intrusions from the Pearl River are the issues that must be considered for eutrophication restoration in SZB.
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Affiliation(s)
- Qi Yan
- School of Life Science, Tsinghua University, Beijing, 100083, China
| | - Yaqing Liu
- The Institute for Ocean Engineering, Tsinghua Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen 518055, Guangdong Province, China
| | - Cuilan Qu
- Shenzhen Institute of Quality & Safety Inspection and Research, 518055, China
| | - Junting Song
- The Institute for Ocean Engineering, Tsinghua Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen 518055, Guangdong Province, China
| | - Autif Hussain Mangi
- The Institute for Ocean Engineering, Tsinghua Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen 518055, Guangdong Province, China
- Institute of Biochemistry, University of Sindh Jamshoro 76080, Pakistan
| | - Bing Zhang
- Shenzhen Institute of Quality & Safety Inspection and Research, 518055, China
| | - Jin Zhou
- The Institute for Ocean Engineering, Tsinghua Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen 518055, Guangdong Province, China
| | - Zhonghua Cai
- The Institute for Ocean Engineering, Tsinghua Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen 518055, Guangdong Province, China
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26
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Li H, Sun Y, Zheng X, Huang P, Li P, You J. Long-term improvement of sediment in situ restoration and REDOX characteristics by Vallisneria natans coupling with carbon fiber. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 266:115547. [PMID: 37806130 DOI: 10.1016/j.ecoenv.2023.115547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 09/24/2023] [Accepted: 10/03/2023] [Indexed: 10/10/2023]
Abstract
China is conducting ecological restoration work in urban water bodies. Under anoxic and anaerobic conditions, pollutants transform and produce odorous and black substances, deteriorating the water quality, which is a significant problem in urban water bodies. Vallisneria natans has received widespread attention for its applications in water treatment and restoration. However, the efficiency by which V. natans reduces water pollution and allows sediment remediation requires further improvement. Therefore, in this study, we investigated the effect of V. natans coupled with carbon fiber on the restoration of water bodies and sediment compared with the control group that grew V. natans without carbon fiber. The oxidation-reduction potential (ORP) was selected as the main evaluation index for the water and sediment. Dissolved oxygen in the water and total organic carbon and total nitrogen (TN) in the sediment were also evaluated. V. natans coupled with carbon fiber significantly increased the ORP; that of surface sediment increased by 50 % and that of the water body increased by 60 % compared with the sediment without any bioremediation. Chemical oxygen demand, total phosphorous, and TN in water decreased by 61.2 %, 22.9 %, and 48.3 %, respectively. These results indicate that planting V. natans with carbon fiber can reduce pollutants in water (including humus) and sediments, effectively improving ORP in water and sediment.
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Affiliation(s)
- Henan Li
- North China Municipal Engineering Design & Research Institute Co., Ltd, Tianjin 300072, PR China.
| | - Yongli Sun
- North China Municipal Engineering Design & Research Institute Co., Ltd, Tianjin 300072, PR China.
| | - Xingcan Zheng
- North China Municipal Engineering Design & Research Institute Co., Ltd, Tianjin 300072, PR China
| | - Peng Huang
- North China Municipal Engineering Design & Research Institute Co., Ltd, Tianjin 300072, PR China
| | - Pengfeng Li
- North China Municipal Engineering Design & Research Institute Co., Ltd, Tianjin 300072, PR China
| | - Jia You
- North China Municipal Engineering Design & Research Institute Co., Ltd, Tianjin 300072, PR China
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27
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Yu J, You J, Lens PNL, Lu L, He Y, Ji Z, Chen J, Cheng Z, Chen D. Biofilm metagenomic characteristics behind high coulombic efficiency for propanethiol deodorization in two-phase partitioning microbial fuel cell. WATER RESEARCH 2023; 246:120677. [PMID: 37827037 DOI: 10.1016/j.watres.2023.120677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 09/12/2023] [Accepted: 09/27/2023] [Indexed: 10/14/2023]
Abstract
Hydrophobic volatile organic sulfur compounds (VOSCs) are frequently found during sewage treatment, and their effective management is crucial for reducing malodorous complaints. Microbial fuel cells (MFC) are effective for both VOSCs abatement and energy recovery. However, the performance of MFC on VOSCs remains limited by the mass transfer efficiency of MFC in aqueous media. Inspired by two-phase partitioning biotechnology, silicone oil was introduced for the first time into MFC as a non-aqueous phase (NAP) medium to construct two-phase partitioning microbial fuel cell (TPPMFC) and augment the mass transfer of target VOSCs of propanethiol (PT) in the liquid phase. The PT removal efficiency within 32 h increased by 11-20% compared with that of single-phase MFC, and the coulombic efficiency of TPPMFC (11.01%) was 4.32-2.68 times that of single-phase MFC owing to the fact that highly active desulfurization and thiol-degrading bacteria (e.g., Pseudomonas, Achromobacter) were attached to the silicone oil surface, whereas sulfur-oxidizing bacteria (e.g., Thiobacillus, Commonas, Ottowia) were dominant on the anodic biofilm. The outer membrane cytochrome-c content and NADH dehydrogenase activity improved by 4.15 and 3.36 times in the TPPMFC, respectively. The results of metagenomics by KEGG and COG confirmed that the metabolism of PT in TPPMFC was comprehensive, and that the addition of a NAP upregulates the expression of genes related to sulfur metabolism, energy generation, and amino acid synthesis. This finding indicates that the NAP assisted bioelectrochemical systems would be promising to solve mass-transfer restrictions in low solubility contaminates removal.
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Affiliation(s)
- Jian Yu
- Zhejiang Key Laboratory of Petrochemical Environmental Pollution Control, Zhejiang Ocean University, Zhoushan 316022, China; College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Juping You
- Zhejiang Key Laboratory of Petrochemical Environmental Pollution Control, Zhejiang Ocean University, Zhoushan 316022, China.
| | - Piet N L Lens
- National University of Ireland, Galway H91TK33, Ireland
| | - Lichao Lu
- Zhejiang Key Laboratory of Petrochemical Environmental Pollution Control, Zhejiang Ocean University, Zhoushan 316022, China
| | - Yaxue He
- Zhejiang Key Laboratory of Petrochemical Environmental Pollution Control, Zhejiang Ocean University, Zhoushan 316022, China
| | - Zhenyi Ji
- Zhejiang Key Laboratory of Petrochemical Environmental Pollution Control, Zhejiang Ocean University, Zhoushan 316022, China; College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Jianmeng Chen
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China; School of Environment and Natural Resources, Zhejiang University of Science & Technology, Hangzhou 310023, China
| | - Zhuowei Cheng
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Dongzhi Chen
- Zhejiang Key Laboratory of Petrochemical Environmental Pollution Control, Zhejiang Ocean University, Zhoushan 316022, China.
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Yu Y, Yu Z, Jiang J, Wu L, Feng H. Assessing the impacts of fine sediment removal on endogenous pollution release and microbial community structure in the shallow lakes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 897:165410. [PMID: 37423283 DOI: 10.1016/j.scitotenv.2023.165410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 06/19/2023] [Accepted: 07/06/2023] [Indexed: 07/11/2023]
Abstract
Resuspension is a crucial process for releasing endogenous pollution from shallow lakes into the overlying water. Fine particle sediment, which has a higher contamination risk and longer residence time, is the primary target for controlling endogenous pollution. To this end, a study coupling aqueous biogeochemistry, electrochemistry, and DNA sequencing was conducted to investigate the remediation effect and microbial mechanism of sediment elution in shallow eutrophic water. The results indicated that sediment elution can effectively remove some fine particles in situ. Furthermore, sediment elution can inhibit the release of ammonium nitrogen and total dissolved phosphorous into the overlying water from sediment resuspension in the early stage, resulting in reductions of 41.44 %-50.45 % and 67.81 %-72.41 %, respectively. Additionally, sediment elution greatly decreased the concentration of nitrogen and phosphorus pollutants in pore water. The microbial community structure was also substantially altered, with an increase in the relative abundance of aerobic and facultative aerobic microorganisms. Redundancy analysis, PICRUSt function prediction, and the correlation analysis revealed that loss on ignition was the primary factor responsible for driving changes in microbial community structure and function in sediment. Overall, the findings provide novel insights into treating endogenous pollution in shallow eutrophication water.
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Affiliation(s)
- Ying Yu
- Institute of Intelligent Machines, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China; Key Laboratory of Nutrient Cycling Resources and Environment of Anhui, Institute of Soil and Fertilizer, Anhui Academy of Agricultural Sciences, Hefei 230001, China
| | - Zengliang Yu
- Institute of Intelligent Machines, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
| | - Jingang Jiang
- Institute of Intelligent Machines, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
| | - Lifang Wu
- Institute of Intelligent Machines, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
| | - Huiyun Feng
- Institute of Intelligent Machines, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China.
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Ma T, Yang Y, Song T, Fan M, Wang B, Tu W, Ren W, Zhou Q, Chen S. The changes in iron ions concentration and organic matter composition during the surface microlayer membrane formation process in freshwater. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 334:122218. [PMID: 37479169 DOI: 10.1016/j.envpol.2023.122218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 07/09/2023] [Accepted: 07/16/2023] [Indexed: 07/23/2023]
Abstract
The surface microlayer membrane (SMM) is a complex and unique water body ecosystem. The SMM has a significant effect on water quality and the water ecological system. However, despite the long-lasting interest in the SMM formation process and its environmental effect mechanism in freshwater, studies on it are still scarce. This paper studied the changes in iron ions concentration and organic matter composition during the SMM formation process. Our results revealed that the iron ions enriched in the SMM, at a concentration of up to 8.02 μg/mL, exist in the form of Fe3+. The main organic matter is polysaccharides and proteins in the SMM. Additionally, the microbial community structure revealed that the changes in iron ion morphology in water and the SMM was a significant association with the presence of Aeromonas and Zoogloea. The rapid enrichment process of iron ions and organic matter in the aquatic surface microlayer is involved in the rapid formation of early SMM. Obviously, these findings provide new insights and a basis for the SMM of freshwater.
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Affiliation(s)
- Tian Ma
- Low-cost Wastewater Treatment Technology International Sci-Tech Cooperation Base of Sichuan Province, School of Environment and Resource, Southwest University of Science and Technology, Mianyang, 621010, PR China
| | - Yuankun Yang
- Low-cost Wastewater Treatment Technology International Sci-Tech Cooperation Base of Sichuan Province, School of Environment and Resource, Southwest University of Science and Technology, Mianyang, 621010, PR China.
| | - Tao Song
- Low-cost Wastewater Treatment Technology International Sci-Tech Cooperation Base of Sichuan Province, School of Environment and Resource, Southwest University of Science and Technology, Mianyang, 621010, PR China
| | - Min Fan
- Low-cost Wastewater Treatment Technology International Sci-Tech Cooperation Base of Sichuan Province, School of Environment and Resource, Southwest University of Science and Technology, Mianyang, 621010, PR China
| | - Bin Wang
- Low-cost Wastewater Treatment Technology International Sci-Tech Cooperation Base of Sichuan Province, School of Environment and Resource, Southwest University of Science and Technology, Mianyang, 621010, PR China
| | - Weiguo Tu
- Sichuan Provincial Academy of Natural Resource Sciences, Sichuan, 610015, PR China
| | - Wanfu Ren
- Department of Ecology and Environment of Liaoning Province, Liaoning, 110161, PR China
| | - Qiuhong Zhou
- Changjiang Engineering Group, Wuhan, 430010, PR China
| | - Shu Chen
- Low-cost Wastewater Treatment Technology International Sci-Tech Cooperation Base of Sichuan Province, School of Environment and Resource, Southwest University of Science and Technology, Mianyang, 621010, PR China
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30
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Wan R, Zha Y, Wu M, Li X, Yang H, Liu H. Long-term effective remediation of black-odorous water via regulating calcium nitrate sustained-release. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:1065. [PMID: 37598137 DOI: 10.1007/s10661-023-11659-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 08/01/2023] [Indexed: 08/21/2023]
Abstract
Nitrate addition is reported as a cost-effective method for remediating black-odorous water, which is mainly induced by the deficiency of electron acceptor. However, excessive release of nitrate and lack of long-term effectiveness significantly limited the application of direct nitrate dosing technology. Herein, for remediating black-odorous water, we constructed a nitrate sustained-release ecological concrete (ecoN-concrete), in which calcium nitrate (Ca(NO3)2) was dosed into concrete block to regulate the release of nitrate. The results showed that chemical oxygen demand (COD), turbidity, ammonia, phosphate, and sulfate were significantly removed in an ecoN-concrete-contained reactor fed with black-odorous water, and its removal efficiency was largely dependent on Ca(NO3)2 dosage. Meanwhile, the released nitrate was lower than 25% of its total dosage and nitrite was lower than 1.5 mg/L during 14 days remediation. After three recycles, the removal efficiencies of COD and turbidity by using ecoN-concrete were still more than 85%, indicating an excellent nitrate sustained-release performance of ecoN-concrete, which can be applied for preventing water re-blackening and re-stinking. Further investigation illustrated that the ecoN-concrete (1) decreased the abundance of Desulfovibrio, Desulfomonile, and Desulforhabdus in the phylum of Desulfobacterota to alleviate the odorous gas production and (2) significantly increased the abundance of Bacillus and Thermomonas, which utilized the released-nitrate for consuming organic matters and ammonia. This study provided an artful Ca(NO3)2 dosing strategy and long-term effective method for black-odorous water remediation.
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Affiliation(s)
- Rui Wan
- School of Ecology and Environment, Anhui Normal University, Wuhu, 241002, China.
| | - Yunyi Zha
- School of Ecology and Environment, Anhui Normal University, Wuhu, 241002, China
| | - Mengqi Wu
- School of Ecology and Environment, Anhui Normal University, Wuhu, 241002, China
| | - Xiaoxiao Li
- School of Ecology and Environment, Anhui Normal University, Wuhu, 241002, China
- College of Environment, Hohai University, Nanjing, 210098, China
| | - Haifeng Yang
- Donghu Innovation Center, Anhui Phoneya Environmental Technology Co. Ltd, Hefei, 230601, China
| | - Hongming Liu
- College of Life Sciences, Anhui Normal University, Wuhu, 241001, China
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31
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Wei Z, Xu Y, Shi Y, Zhou X, Lin J, Ruan A. The response mechanism of microorganisms to the organic carbon-driven formation of black and odorous water. ENVIRONMENTAL RESEARCH 2023; 231:116255. [PMID: 37245578 DOI: 10.1016/j.envres.2023.116255] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 05/15/2023] [Accepted: 05/26/2023] [Indexed: 05/30/2023]
Abstract
The formation of black and odorous water is a complex process influenced by various factors such as organic matter and environmental conditions. However, there are limited studies on the role of microorganisms in water and sediment during the blackening and odorization process. In this study, we investigated the characteristics of black and odorous water formation by simulating organic carbon-driven black and odorous water through indoor experiments. The study revealed that the water turned black and odorous when DOC reached 50 mg/L and the microbial community structure in the water changed significantly during this process, with the relative abundance of Desulfobacterota increasing significantly and Desulfovibrio being the main dominant genus in Desulfobacterota. Additionally, we observed a notable decrease in the α-diversity of the microbial community in water and a considerable increase in microbial function of sulfur compounds respiration in water. In contrast, the sediment microbial community changed slightly, and the main functions of the sediment microbial community remained unchanged. The partial least squares path model (PLS-PM) suggested that organic carbon will drive the blackening and odorization process by affecting DO levels and microbial community structure and that the contribution of Desulfobacterota in water to the formation of black and odorous water was higher than that in sediment. Overall, our study provides insights into the characteristics of black and odorous water formation and suggests potential ways to prevent its formation by controlling DOC and inhibiting the growth of Desulfobacterota in water bodies.
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Affiliation(s)
- Zhipeng Wei
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China; College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China
| | - Yaofei Xu
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China; College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China
| | - Yingying Shi
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China; College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China
| | - Xiaotian Zhou
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China; College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China
| | - Jie Lin
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China; College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China
| | - Aidong Ruan
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China; College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China.
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32
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Zhao Y, Liu Y, Xu H, Fan Q, Zhu C, Liu J, Zhu M, Wang X, Niu A. Preparation and Application of Magnetic Composites Using Controllable Assembly for Use in Water Treatment: A Review. Molecules 2023; 28:5799. [PMID: 37570769 PMCID: PMC10421488 DOI: 10.3390/molecules28155799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 07/21/2023] [Accepted: 07/29/2023] [Indexed: 08/13/2023] Open
Abstract
The use of magnetic composites in wastewater treatment has become widespread due to their high flocculating characteristics and ferromagnetism. This review provides an analysis and summary of the preparation and application of magnetic composites through controllable assembly for use in wastewater treatment. The applications of magnetic composites include the treatment of dye wastewater, heavy metal wastewater, microalgae suspensions, and oily wastewater. Additionally, the recycling and regeneration of magnetic composites have been investigated. In the future, further research could be focused on improving the assembly and regeneration stability of magnetic composites, such as utilizing polymers with a multibranched structure. Additionally, it would be beneficial to explore the recycling and regeneration properties of these composites.
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Affiliation(s)
- Yuan Zhao
- College of Chemistry and Chemical Engineering, Henan University of Science and Technology, Luoyang 471000, China
| | - Yinhua Liu
- College of Chemistry and Chemical Engineering, Henan University of Science and Technology, Luoyang 471000, China
| | - Hang Xu
- College of Chemistry and Chemical Engineering, Henan University of Science and Technology, Luoyang 471000, China
| | - Qianlong Fan
- College of Basic Medicine and Forensic Medicine, Henan University of Science and Technology, Luoyang 471000, China
| | - Chunyou Zhu
- Bureau of Hydrology and Water Resources, Pearl River Water Resources Commission of Ministry of Water Resources, Guangzhou 510611, China
| | - Junhui Liu
- College of Chemistry and Chemical Engineering, Henan University of Science and Technology, Luoyang 471000, China
| | - Mengcheng Zhu
- College of Chemistry and Chemical Engineering, Henan University of Science and Technology, Luoyang 471000, China
| | - Xuan Wang
- College of Chemistry and Chemical Engineering, Henan University of Science and Technology, Luoyang 471000, China
| | - Anqi Niu
- College of Chemistry and Chemical Engineering, Henan University of Science and Technology, Luoyang 471000, China
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33
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Fu X, Huo P, Wang W, Li D, Liu X, Zeng G, Lyu S. Simultaneous immobilization of heavy metals and nutrient elements in contaminated sediment using a novel composite agent product. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2023; 88:288-303. [PMID: 37452548 PMCID: wst_2023_216 DOI: 10.2166/wst.2023.216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
In this research, an innovative type of sediment resource treatment agent (SRA) was synthesized successfully, which could immobilize ammonia nitrogen (NH3-N), total phosphorus (TP), potassium (K), and simultaneously stabilize cadmium (Cd), lead (Pb), chromium (Cr), copper (Cu), nickel (Ni), and zinc (Zn) in dredged sediment. The effects of SRA dosage on stabilizing the nutrient elements and heavy metals were investigated. The results demonstrated that the increase of SRA dosage significantly enhanced the stabilization of nutrients and heavy metals. The 14-day rainwater infiltration and rainwater scouring experiments were carried out. With the simulation test of rainwater infiltration, the stabilization ratios of Cr, Cu, Ni, Pb, Zn, Cd, NH3-N, TP, and K with 2% SRA addition reached 80.8%, 76.8%, 80.3%, 77.5%, 78.0%, 72.7%, 64.3%, 73.9%, and 73.9%, respectively. Under the action of rainwater scouring, the stabilization ratios of Cr, Cu, Ni, Pb, Zn, Cd, NH3-N, TP, and K with 6.4% SRA addition reached 84.6%, 84.0%, 77.6%, 87.3%, 80.0%, 61.5%, 76.2%, 77.8%, and 91.7%, respectively. Therefore, the results demonstrate that SRA is an excellent composite material in stabilizing heavy metals while reserving the nutrients in dredged sediment, thus showing great potential in the application for dredged sediment resource treatment.
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Affiliation(s)
- Xiaori Fu
- China Construction Sixth Engineering Bureau Hydropower Construction Co. Ltd, Tianjin 300222, China; These authors contributed to the work equally and should be regarded as co-first authors. E-mail:
| | - Peishu Huo
- China Construction Sixth Engineering Bureau Hydropower Construction Co. Ltd, Tianjin 300222, China; These authors contributed to the work equally and should be regarded as co-first authors
| | - Wenji Wang
- China Construction Sixth Engineering Bureau Hydropower Construction Co. Ltd, Tianjin 300222, China
| | - Dexiao Li
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China
| | - Xiaojing Liu
- China Construction Eco-Environmental Group Co. Ltd, Beijing 100037, China
| | - Guilu Zeng
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China
| | - Shuguang Lyu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China
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Shi Y, Wei Z, Xu Y, Lu X, Ruan A. Effects of electrochemical intervention on the remediation of black-odorous water: insights into microbial community dynamics and functional shifts in sediments. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2023; 87:2776-2792. [PMID: 37318923 PMCID: wst_2023_169 DOI: 10.2166/wst.2023.169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Black-odorous water is a severe environmental issue that has received continuous attention. The major purpose of the present study was to propose an economical, practical, and pollution-free treatment technology. In this study, the in situ remediation of black-odorous water was conducted by applying different voltages (2.5, 5, and 10 V) to improve oxidation conditions of the surface sediments. The study investigated the effects of voltage intervention on water quality, gas emissions, and microbial community dynamics in surface sediments during the remediation process. The results indicated that the voltage intervention can effectively increase the oxidation-reduction potential (ORP) of the surface sediments and inhibit the emissions of H2S, NH3, and CH4. Moreover, the relative abundances of typical methanogens (Methanosarcina and Methanolobus) and sulfate-reducing bacteria (Desulfovirga) decreased because of the increase in ORP after the voltage treatment. The microbial functions predicted by FAPROTAX also demonstrated the inhibition of methanogenesis and sulfate reduction functions. On the contrary, the total relative abundances of chemoheterotrophic microorganisms (e.g., Dechloromonas, Azospira, Azospirillum, and Pannonibacter) in the surface sediments increased significantly, which led to enhanced biochemical degradability of the black-odorous sediments as well as CO2 emissions.
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Affiliation(s)
- Yingying Shi
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China E-mail: ; College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China
| | - Zhipeng Wei
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China E-mail: ; College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China
| | - Yaofei Xu
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China E-mail: ; College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China
| | - Xiang Lu
- Department of Biosciences, Centre for Biogeochemistry in the Anthropocene, University of Oslo, Oslo 0316, Norway
| | - Aidong Ruan
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China E-mail: ; College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China
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Guo S, Zhang S, Wang S, Lv X, Chen H, Hu X, Ma Y. Potamogeton crispus restoration increased the epiphytic microbial diversity and improved water quality in a micro-polluted urban river. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 326:121485. [PMID: 36958656 DOI: 10.1016/j.envpol.2023.121485] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 03/03/2023] [Accepted: 03/20/2023] [Indexed: 06/18/2023]
Abstract
Special characterization and assembly of epiphytic microbial communities remain unclear in micro-polluted water column during submersed macrophytes restoration. In this study, an in-situ enclosure area sowing with turions of Potamogeton crispus (P. crispus) was conducted in a micro-polluted urban river to investigate the characterization of P. crispus and epiphytic microbial communities and their response to water environment under different water depths. Turions completely germinated in water column with <90 cm water depth and the germination speed decreased with increasing water depth within 18 days. There were obvious differences in morphological characteristics of P. crispus between deep and shallow water layers. P. crispus restoration decreased by 12-32%, 13-36%, 9-43% and 5-36% of COD, NH4+-N, TN and TP concentration, respectively, in enclosed overlying water compared to the river (P < 0.05) during 5 months of experiment. Illumina sequencing was employed to explore the epiphytic bacterial and microeukayotic communities at water depth 25-35 cm (shallow area) and 80-90 cm (deep area). A total of 9 bacterial and 12 microeukayotic dominant phyla were obtained in eight samples. It should be noted that the algae abundances were higher in shallow area than deep area but a reverse trend was observed for methanotrophs. Null model analysis revealed that dispersal limitation and undominated process was the most important assembly process, whereas stochastic processes gained more importance in shallow area than deep one. According to cooccurrence analysis (|r| > 0.6, P < 0.05), there were more strongly correlated edges in shallow area (456 edges) than deep area (340 edges). These results highlight that submerged macrophytes restoration can increase microbial diversity and improve water quality, and provide a "summer disease cured in winter" way by using could-resistant P. crispus for water purification in micro-polluted rivers in low-temperature season.
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Affiliation(s)
- Shaozhuang Guo
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing, 210098, PR China; College of Environment, Hohai University, Nanjing, 210098, PR China
| | - Songhe Zhang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing, 210098, PR China; College of Environment, Hohai University, Nanjing, 210098, PR China.
| | - Supeng Wang
- College of Environment, Hohai University, Nanjing, 210098, PR China; CCCC National Engineering Research Center of Dredging Technology and Equipment Co., Ltd, Shanghai, PR China
| | - Xin Lv
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing, 210098, PR China; College of Environment, Hohai University, Nanjing, 210098, PR China
| | - Hezhou Chen
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing, 210098, PR China; College of Environment, Hohai University, Nanjing, 210098, PR China
| | - Xiuren Hu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing, 210098, PR China; College of Environment, Hohai University, Nanjing, 210098, PR China
| | - Yu Ma
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing, 210098, PR China; College of Environment, Hohai University, Nanjing, 210098, PR China
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36
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Yuan D, Bai M, He L, Zhou Q, Kou Y, Li J. Removal performance and dissolved organic matter biodegradation characteristics in advection ecological permeable dam reactor. ENVIRONMENTAL TECHNOLOGY 2023; 44:2288-2299. [PMID: 34989328 DOI: 10.1080/09593330.2022.2026489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Accepted: 12/11/2021] [Indexed: 06/04/2023]
Abstract
In this present study, an advection ecological permeable dam (AEPD) based on a biofilm reactor was established to investigate pollution control performance and dissolved organic matter (DOM) bio-degradation. The AEPD achieved optimal efficiency-chemical oxygen demand, 6-53 mg/L; total nitrogen concentration, 1.47-6.89 mg/L; total phosphorus concentration, 0.53-3.93 mg/L, and increases in values for ultraviolet-visible parameters-SUVA254, from 0.392 to 0.673-1.438; E4/E6, from 1.09 to 1.11-1.26; A240-400, from 12.06 to 13.09-19.95; and A253-203, from 0.03 to 0.04-0.23. This showed that DOM degradation promoted its humification, aromatisation, and unsaturation as well as increased the number of polar functional groups in the organic aromatic rings of DOM. Synchronous fluorescence and parallel factor analyses indicated that AEPD could effectively degrade tyrosine-like and tryptophan-like compounds, which showed the most significant decrease in fluorescence intensity. Additionally, AEPD displayed some stable dominant bacterial genera (e.g. Proteobacteria_unclassified, Bacteroidetes_unclassified, Gemmobacter, Pseudofulvimonas, Flavobacterium, Pseudomonas, and Nitrospira), although their relative abundance differed under variable hydraulic loading rates. This research provided further technical support for the application of AEPD in the treatment of water environment pollution.
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Affiliation(s)
- Donghai Yuan
- Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing, People's Republic of China
| | - Minghui Bai
- Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing, People's Republic of China
| | - Liansheng He
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, People's Republic of China
| | - Qiang Zhou
- Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing, People's Republic of China
| | - Yingying Kou
- Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing, People's Republic of China
| | - Junqi Li
- Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing, People's Republic of China
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37
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Xiong X, Li Y, Zhang C, Zhou X. Water quality improvement and consequent N 2O emission reduction in hypoxic freshwater utilizing green oxygen-carrying biochar. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 872:162251. [PMID: 36796685 DOI: 10.1016/j.scitotenv.2023.162251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 02/04/2023] [Accepted: 02/10/2023] [Indexed: 06/18/2023]
Abstract
Declines in dissolved oxygen (DO) levels in aquatic systems worldwide negatively influence biodiversity, nutrient biogeochemistry, drinking water quality, and greenhouse gas emission. As a response, oxygen-carrying dual-modified sediment-based biochar (O-DM-SBC) as a green and sustainable emerging material was utilized for simultaneous hypoxia restoration, water quality improvement, and greenhouse gas reduction. Column incubation experiments were carried out using the water and sediment samples from a tributary of the Yangtze River. The application of O-DM-SBC effectively increased the DO concentration from ~1.99 mg/L to ~6.44 mg/L and decreased the concentrations of TN and NH4+-N by 61.1 % and 78.3 %, respectively, during the 30-day incubation period. Moreover, the N2O emission was apparently inhibited by O-DM-SBC with a 50.2 % decrease in daily flux under the functional coupling of biochar (SBC) and oxygen nanobubbles (ONBs). Path analysis supported that the treatments (SBC, modification, and ONBs) had joint effects on N2O emission by changing the concentration and composition of dissolved inorganic nitrogen (e.g., NH4+-N, NO2--N and NO3--N). The nitrogen-transforming bacteria were found to be significantly promoted by O-DM-SBC at the end of the incubation, while the archaeal community seemed to be more active in the SBC groups without ONB, confirming their different mechanisms. The PICRUSt2 prediction results revealed that most nitrogen metabolism genes including nitrification (i.e., amoABC), denitrification (i.e., nirK and nosZ), and assimilatory nitrate reduction (i.e., nirB and gdhA) were largely enriched in O-DM-SBC, indicating the active nitrogen-cycling network was established, thus achieving simultaneous nitrogen pollution control and N2O emission reduction. Our findings not only confirm the beneficial effect of O-DM-SBC amendment on nitrogen pollution control and N2O emission mitigation in hypoxic freshwater, but also contribute to a more comprehensive understanding of the effect of oxygen-carrying biochar on nitrogen cycling microbial communities.
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Affiliation(s)
- Xinyan Xiong
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, PR China
| | - Yi Li
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, PR China.
| | - Chi Zhang
- College of Mechanics and Materials, Hohai University, Xikang Road #1, Nanjing 210098, PR China.
| | - Xinyi Zhou
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, PR China
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Chen L, Zheng X, Zhang K, Wu B, Pei X, Chen W, Wei X, Luo Z, Li Y, Zhang Z. Sustained-release nitrate combined with microbial fuel cell: A novel strategy for PAHs and odor removal from sediment. JOURNAL OF HAZARDOUS MATERIALS 2023; 455:131610. [PMID: 37201276 DOI: 10.1016/j.jhazmat.2023.131610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 04/26/2023] [Accepted: 05/08/2023] [Indexed: 05/20/2023]
Abstract
Nitrate addition is a biostimulation technique that can improve both the oxidation of acid volatile sulfide (AVS) through autotrophic denitrification and the biodegradation of polycyclic aromatic hydrocarbons (PAHs) via heterotrophic denitrification. However, during the remediation, parts of the dissolved nitrate in the sediment migrates from the sediment to the overlying water, leading to the loss of effective electron acceptor. To overcome this limitation, a combined approached was proposed, which involved nitrocellulose addition and a microbial fuel cell (MFC). Results indicated the nitrate could be slowly released and maintained at a higher concentration over long term. In the combined system, the removal efficiencies of PAHs and AVS were 71.56% and 89.76%, respectively. Furthermore, the voltage attained for the MFC-nitrocellulose treatment was maintained at 146.1 mV on Day 70, which was 5.37 times higher than that of the MFC-calcium nitrate treatment. Sediments with nitrocellulose resulted in lower levels of nitrate and ammonium in the overlying water. Metagenomic results revealed that the combined technology improved the expression of nitrogen-cycling genes. The introduction of MFC inhibited sulfide regeneration during incubation by suppressing the enzyme activity like EC4.4.1.2. The enhanced biostimulation provided potential for in-situ bioremediation utilizing MFC coupled with slow-released nitrate (i.e., nitrocellulose) treatment.
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Affiliation(s)
- Lili Chen
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Xiangjian Zheng
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Kun Zhang
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China; Institute of Agricultural Resources and Environment, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
| | - Baile Wu
- School of Sustainable Engineering and the Built Environment, Ira A. Fulton Schools of Engineering, Arizona State University, Tempe, AZ, USA
| | - Xu Pei
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Weisong Chen
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Xiaoli Wei
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Zifeng Luo
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Yongtao Li
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China.
| | - Zhen Zhang
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China.
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Wen S, Lu Y, Dai J, Huang X, An S, Liu J, Liu Z, Du Y, Zhang Y. Stability of organic matter-iron-phosphate associations during abiotic reduction of iron. JOURNAL OF HAZARDOUS MATERIALS 2023; 449:131016. [PMID: 36821894 DOI: 10.1016/j.jhazmat.2023.131016] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 02/13/2023] [Accepted: 02/14/2023] [Indexed: 06/18/2023]
Abstract
The stability of organic matter-iron-phosphate (OM-Fe-P) association has an important impact on the migration and sequestration of organic carbon (OC) and P in the environment. Here, we examined the release characteristics of Fe, P and OM due to the abiotic reduction of OM-Fe-P associations by Na-dithionite. The associations were synthesized with algae-derived OM (AOM) and terrestrial humic acid (HA) through either adsorption onto iron (hydr)oxide or coprecipitation with Fe(III). Results indicated that OM and P adsorbed onto the associations were rapidly released, whereas coprecipitation yielded much lower release rates of Fe, P, and OM. The stronger inhibitory effect on reduction from coprecipitation can be explained by larger particles formed by coprecipitation and coprecipitation taking up more OC that had a passivation effect on the associations. The release rates of OM and P were lower in coprecipitates formed with HA than formed with AOM for a given OC/Fe ratio. This observation can be attributed to a patchy distribution of OC in AOM associated coprecipitates, which showed a weaker aggregation of OC with Fe and P. In contrast, the distribution of OC in HA-associated coprecipitates was more homogenous, enabling a stronger aggregation of OM with P and a greater passivation effect on P release. Our results revealed that OM sources, association formation pathways, and elemental stoichiometry collectively controlled the stability of OM-Fe-P associations.
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Affiliation(s)
- ShuaiLong Wen
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - YueHan Lu
- Molecular Eco-Geochemistry (MEG) Laboratory, Department of Geological Sciences, The University of Alabama, 201 7th Ave, Tuscaloosa, AL 35485, USA
| | - JiaRu Dai
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 210008, China
| | - XiuLin Huang
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; School of Environmental and Chemical Engineering, Chongqing Three Gorges University, Chongqing 404020, China
| | - ShiLin An
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - JingJing Liu
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - ZhengWen Liu
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - YingXun Du
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - YunLin Zhang
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China
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Jiang J, Men Y, Pang T, Tang S, Hou Z, Luo M, Sun X, Wu J, Yadav S, Xiong Y, Liu C, Zheng Y. An integrated supervision framework to safeguard the urban river water quality supported by ICT and models. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 331:117245. [PMID: 36681034 DOI: 10.1016/j.jenvman.2023.117245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 12/18/2022] [Accepted: 01/04/2023] [Indexed: 06/17/2023]
Abstract
Models and information and communication technology (ICT) can assist in the effective supervision of urban receiving water bodies and drainage systems. Single model-based decision tools, e.g., water quality models and the pollution source identification (PSI) method, have been widely reported in this field. However, a systematic pathway for environmental decision support system (EDSS) construction by integrating advanced single techniques has rarely been reported, impeding engineering applications. This paper presents an integrated supervision framework (UrbanWQEWIS) involving monitoring-early warning-source identification-emergency disposal to safeguard the urban water quality, where the data, model, equipment and knowledge are smoothly and logically linked. The generic architecture, all-in-one equipment and three key model components are introduced. A pilot EDSS is developed and deployed in the Maozhou River, China, with the assistance of environmental Internet of Things (IoT) technology. These key model components are successfully validated via in situ monitoring data and dye tracing experiments. In particular, fluorescence fingerprint-based qualitative PSI and Bayesian-based quantitative PSI methods are effectively coupled, which can largely reduce system costs and enhance flexibility. The presented supervision framework delivers a state-of-the-art management tool in the digital water era. The proposed technical pathway of EDSS development provides a valuable reference for other regions.
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Affiliation(s)
- Jiping Jiang
- Shenzhen Municipal Engineering Lab of Environmental IoT Technologies, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Yunlei Men
- Shenzhen Zhishu Environmental Science and Technology Co. Ltd., Shenzhen, 518055, China.
| | - Tianrui Pang
- Shenzhen Municipal Engineering Lab of Environmental IoT Technologies, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China; School of Environment, Harbin Institute of Technology, Harbin, 150090, China.
| | - Sijie Tang
- Shenzhen Municipal Engineering Lab of Environmental IoT Technologies, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Zhiqiang Hou
- Power China Eco-Environmental Group Co. Ltd., Shenzhen, 518101, China.
| | - Meiyu Luo
- Shenzhen Zhishu Environmental Science and Technology Co. Ltd., Shenzhen, 518055, China.
| | - Xiaoling Sun
- ZICT Technology Co., Ltd., Shenzhen, 518055, China.
| | - Jinfu Wu
- Huayue Institute of Ecological Environment Engineering Co. Ltd., Chongqing, 401122, China.
| | - Soumya Yadav
- Shenzhen Municipal Engineering Lab of Environmental IoT Technologies, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China; Department of Civil Engineering, Indian Institute of Technology, Kharagpur, West Bengal, 721302, India.
| | - Ye Xiong
- Shenzhen Water Group Co., Ltd., Shenzhen, 158000, China.
| | - Chongxuan Liu
- Shenzhen Municipal Engineering Lab of Environmental IoT Technologies, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Yi Zheng
- Shenzhen Municipal Engineering Lab of Environmental IoT Technologies, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
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Xu L, Huang F, Wu F, Fan R. Grade evaluation of black-odorous urban rivers in the Greater Bay Area of China using an improved back propagation (BP) neural network. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:55171-55186. [PMID: 36882653 DOI: 10.1007/s11356-023-26202-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 02/25/2023] [Indexed: 06/18/2023]
Abstract
With the rapid development of urbanization, the urban water environment is receiving continuous attention. It is necessary to understand water quality in a timely manner and make a reasonable comprehensive evaluation. However, existing black-odorous water grade evaluation guidelines are not sufficient. Understanding the changing situation of black-odorous water in urban rivers is a growing concern, especially in real-world scenarios. In this study, a BP neural network combined with the fuzzy membership degree was applied to evaluate the black-odorous grade of urban rivers in Foshan City, which is within the Greater Bay Area of China. The optimal 4 × 11 × 1 topology structure of the BP model was constructed by taking the dissolved oxygen (DO), ammonia nitrogen (NH3-N), chemical oxygen demand (COD), and total phosphorus (TP) concentrations as input water quality indicators. There was almost no occurrence of black-odorous water in the two public rivers outside the region in 2021. Black-odorous water was most significant in 10 urban rivers, with grade IV and grade V occurring over 50% of the time in 2021. These rivers had three features, i.e., parallel with a public river, beheaded, and close proximity to Guangzhou City, the provincial capital of Guangdong. The results of the grade evaluation of the black-odorous water found basically matched those of the water quality assessment. The existence of some inconsistencies between the two systems justified the necessity to expand and extend the number of employed indicators and grades in the present guidelines. The results confirm the capability of the BP neural network combined with the fuzzy-based membership degree in the quantitative grade evaluation of black-odorous water in urban rivers. This study makes a step forward in understanding the grading of black-odorous urban rivers. The findings can provide a reference for local policy-makers regarding the priority of practical engineering projects in prevailing water environment treatment programs.
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Affiliation(s)
- Liping Xu
- POWERCHINA Chengdu Engineering Corporation Limited, Chengdu, 611130, China.
- Sichuan Municipal Water Environment Treatment Engineering Technology Research Center, Chengdu, 611130, China.
| | - Faming Huang
- POWERCHINA Chengdu Engineering Corporation Limited, Chengdu, 611130, China
- Sichuan Municipal Water Environment Treatment Engineering Technology Research Center, Chengdu, 611130, China
| | - Fuhua Wu
- POWERCHINA Chengdu Engineering Corporation Limited, Chengdu, 611130, China
- Sichuan Municipal Water Environment Treatment Engineering Technology Research Center, Chengdu, 611130, China
| | - Ruiqi Fan
- POWERCHINA Chengdu Engineering Corporation Limited, Chengdu, 611130, China
- Sichuan Municipal Water Environment Treatment Engineering Technology Research Center, Chengdu, 611130, China
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Liu Q, Ma T, Sheng Y, Wang W, Jiang M, Liu X, Hu N. Feasibility of soil and sludge standards for freshwater sediment pollutant determination and quality judgment. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:430. [PMID: 36847913 DOI: 10.1007/s10661-023-11032-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Accepted: 02/20/2023] [Indexed: 06/18/2023]
Abstract
The environmental standards of soil and sludge have been typically referenced for freshwater sediment determination and quality assessment, especially in some areas without sediment standards. The feasibility of determination method and quality standard of soils and sludge for freshwater sediment was investigated in this study. Fractions of heavy metals, nitrogen, phosphorus, and reduced inorganic sulfur (RIS) in different type of samples were determined, including freshwater sediments, dryland and paddy soils, and sludge with air-drying (AD) and freeze-drying (FD) treatment, respectively. Results showed fraction distributions of heavy metals, nitrogen, phosphorus, and RIS in sediments markedly differed from those of soils and sludge. Fraction redistributions of heavy metals, nitrogen, phosphorus, and RIS in sediments were observed with AD compared to those treated by FD. The proportions of heavy metals, nitrogen, and phosphorus associated with organic matter (or sulfide) in FD sediments decreased by 4.8-74.2%, 9.5-37.5%, and 16.1-76.3%, respectively, compared to those in AD sediments, while those associated with Fe/Mn oxides increased by 6.3-39.1%, 50.9-226.9%, and 6.1-31.0%, respectively. The fraction proportions of RIS in sediments with AD also sharply decreased. Determination of standard methods for sludge and soil caused the distortion of pollutant fraction analysis in sediment. Similarly, the quality standard of sludge and soil was inappropriate for sediment quality assessment due to the differences in pollutant fraction pattern between sediment and soils/sludge. Totally, soil and sludge standards are inapplicable for freshwater sediment pollutant determination and quality judgment. This study would greatly advance the establishment of freshwater sediment determination methods and quality standards.
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Affiliation(s)
- Qunqun Liu
- Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
| | - Tao Ma
- Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yanqing Sheng
- Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China.
| | - Wenjing Wang
- Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
| | - Ming Jiang
- Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Xiaozhu Liu
- Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Nana Hu
- Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
- University of Chinese Academy of Sciences, Beijing, China
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Huang Y, Hu W, Dong M, Yang Y, Yang X, Huang H, Yang S, Jia W, Wang B, Xu M. Cable bacteria accelerate the anaerobic removal of pyrene in black odorous river sediments. JOURNAL OF HAZARDOUS MATERIALS 2023; 443:130305. [PMID: 36356519 DOI: 10.1016/j.jhazmat.2022.130305] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 10/26/2022] [Accepted: 10/30/2022] [Indexed: 06/16/2023]
Abstract
Cable bacteria play an essential role in biogeochemical processes in sediments by long-distance electron transport (LDET). A potential relationship has been found between cable bacteria and organic contaminant removal; however, the mechanisms remain unclear. In this study, the response of cable bacteria to pyrene was investigated in sediments with and without pyrene, and the effect of cable bacteria on pyrene removal was explored by connecting and blocking the paths of cable bacteria to the suboxic zones. The results showed that pyrene significantly influenced the microbial community structure and the composition of cable bacteria. The pyrene removal efficiencies significantly increased with the enrichment of cable bacteria, while sulfur-reducing microorganisms and aromatic compound degraders were also significantly enriched and correlated with cable bacteria abundance. Metagenomic analysis showed that cable bacteria have a potential LDET-bound acetate/formate respiratory pathway to gain energy. The presence of pyrene probably selects and enriches cable bacteria with a high tolerance to organic contaminants and changes the related functional microbial community, leading to the acceleration of pyrene removal. This study provides new insights into the interaction mechanisms between contaminants and cable bacteria, shedding light on the applications of cable bacteria in the bioremediation of contaminants in sediments.
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Affiliation(s)
- Youda Huang
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Wenzhe Hu
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Meijun Dong
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Yonggang Yang
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Xunan Yang
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Haobin Huang
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Shan Yang
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Weibin Jia
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Bin Wang
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China; Department of Immunology, Binzhou Medical University, Yantai, China.
| | - Meiying Xu
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China.
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Zeng Q, Zhang Y, Chen P, He Y, Yi C, Feng C. Electrocoagulation coupled with electrooxidation for the simultaneous treatment of multiple pollutants in contaminated sediments. J Environ Sci (China) 2023; 124:89-97. [PMID: 36182191 DOI: 10.1016/j.jes.2021.11.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 11/09/2021] [Accepted: 11/09/2021] [Indexed: 06/16/2023]
Abstract
In situ and simultaneous remediation of a variety of pollutants in sediments remains a challenge. In this study, we report that the combination of electrocoagulation (EC) and electrooxidation (EO) is efficient in the immobilization of phosphorus and heavy metals and in the oxidation of ammonium and toxic organic matter. The integrated mixed metal oxide (MMO)/Fe anode system allowed the facile removal of ammonium and phosphorus in the overlying water (99% of 10 mg/L NH4+-N and 95% of 10 mg/L P disappeared in 15 and 30 min, respectively). Compared with the controls of the single Fe anode and single MMO anode systems, the dual MMO/Fe anode system significantly improved the removal of phenanthrene and promoted the transition of Pb and Cu from the mobile species to the immobile species. The concentrations of Pb and Cu in the toxicity characteristic leaching procedure extracts were reduced by 99% and 97% after an 8 hr operation. Further tests with four real polluted samples indicated that substantial proportions of acid-soluble fraction Pb and Cu were reduced (30%-31% for Pb and 16%-23% for Cu), and the amounts of total organic carbon and NH4+-N decreased by 56%-71% and 32%-63%, respectively. It was proposed that the in situ electrogenerated Fe(II) at the Fe anode and the active oxygen/chlorine species at the MMO anode are conducive to outstanding performance in the co-treatment of multiple pollutants. The results suggest that the EC/EO method is a powerful technology for the in situ remediation of sediments contaminated with different pollutants.
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Affiliation(s)
- Qingjun Zeng
- Fourth Harbor Engineering Institute Co., Ltd., China Communications Construction Co., Ltd., Guangzhou 510230, China; Key Laboratory of Environmental Protection & Safety of Communication Foundation Engineering, China Communications Construction Co., Ltd., Guangzhou 510230, China
| | - Yifan Zhang
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Pingshan Chen
- Fourth Harbor Engineering Institute Co., Ltd., China Communications Construction Co., Ltd., Guangzhou 510230, China; Key Laboratory of Environmental Protection & Safety of Communication Foundation Engineering, China Communications Construction Co., Ltd., Guangzhou 510230, China
| | - Yuting He
- Fourth Harbor Engineering Institute Co., Ltd., China Communications Construction Co., Ltd., Guangzhou 510230, China; Key Laboratory of Environmental Protection & Safety of Communication Foundation Engineering, China Communications Construction Co., Ltd., Guangzhou 510230, China
| | - Congli Yi
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Chunhua Feng
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China.
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Yin M, Yan B, Wang H, Wu Y, Wang X, Wang J, Zhu Z, Yan X, Liu Y, Liu M, Fu C. Effects of microplastics on nitrogen and phosphorus cycles and microbial communities in sediments. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 318:120852. [PMID: 36509346 DOI: 10.1016/j.envpol.2022.120852] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 12/06/2022] [Accepted: 12/08/2022] [Indexed: 06/17/2023]
Abstract
Sediments are the long-term sinks of microplastics (MPs) and nutrients in freshwater ecosystems. Therefore, understanding the effect of MPs on sediment nutrients is crucial. However, few studies have discussed the effects of MPs on nitrogen and phosphorus cycles in freshwater sediments. Herein, 0.5% (w/w) polyvinyl chloride (PVC), polylactic acid (PLA), and polypropylene (PP) MPs were added to freshwater sediments to evaluate their effects on microbial communities and nitrogen and phosphorus release. The potential biochemical functions of the bacterial communities in the sediments were predicted and assessed via 16S rRNA gene sequencing. The results showed that MPs significantly affected the microbial community composition and nutrient cycling in the sediments. PVC and PP MPs can promote microbial nitrification and nitrite oxidation, while PP can significantly promote alkaline phosphatase (ALP) activity and the abundance of the phosphorus-regulation (phoR) gene. PLA MPs had the potential to promote the abundance of microbial phosphorus transporter (ugpB), nitrogen fixation (nifD, nifH, and nifX), and denitrification (nirS, napA, and norB) genes and inhibit nitrification, resulting in massive accumulation and release of ammonia nitrogen. Although PLA MPs inhibited the activity of ALP and the abundance of the organophosphorus mineralization (phoD) gene, it could enhance dissimilatory iron and sulfite reduction, which may promote the release of sedimentary phosphorus. Our findings may help understand the mechanisms of nitrogen and phosphorus cycles and microbial communities driven by MPs in sediments and provide a basis for future assessments of the environmental behavior of MPs in freshwater ecosystems.
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Affiliation(s)
- Maoyun Yin
- Chongqing Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Gorges University, Wanzhou, 404020, China.
| | - Bin Yan
- Chongqing Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Gorges University, Wanzhou, 404020, China.
| | - Huan Wang
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing, 400716, China; Chongqing Landscape and Gardening Research Institute, Chongqing, 401329, China.
| | - Yan Wu
- Chongqing Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Gorges University, Wanzhou, 404020, China; College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China.
| | - Xiang Wang
- Chongqing Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Gorges University, Wanzhou, 404020, China.
| | - Jueqiao Wang
- Chongqing Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Gorges University, Wanzhou, 404020, China.
| | - Zhihao Zhu
- Chongqing Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Gorges University, Wanzhou, 404020, China.
| | - Xixi Yan
- Chongqing Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Gorges University, Wanzhou, 404020, China.
| | - Yuting Liu
- Chongqing Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Gorges University, Wanzhou, 404020, China.
| | - Meijun Liu
- Chongqing Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Gorges University, Wanzhou, 404020, China.
| | - Chuan Fu
- Chongqing Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Gorges University, Wanzhou, 404020, China.
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Guan KL, Luo XJ, Lu QH, Huang CC, Qi XM, Zeng YH, Mai BX, Wang SQ. Occurrence, spatial distribution, and risk assessment of short- and medium-chain chlorinated paraffins in sediment from black-odorous rivers across China. CHEMOSPHERE 2023; 313:137454. [PMID: 36470357 DOI: 10.1016/j.chemosphere.2022.137454] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 11/27/2022] [Accepted: 11/30/2022] [Indexed: 06/17/2023]
Abstract
Chlorinated paraffins (CPs) were massively produced for varied industrial purposes, of which improper handling and consequent environmental release resulted in worldwide contamination. The present study investigated the occurrence and spatial distribution of short- and medium-chain chlorinated paraffins (SCCP/MCCPs) in 171 sediment samples from black-odorous urban rivers across China. Total SCCP and MCCP concentrations ranged from 8.3 to 9.4 × 104 (median: 1.1 × 103) ng/g dw, and from not-detected-value to 1.0 × 106 (median: 1.3 × 104) ng/g dw, respectively. No clear spatial distribution of SCCPs and MCCPs was observed since black-odorous urban rivers were polluted by point-sources of the SCCP/MCCPs. Significant positive correlations were identified between SCCP/MCCPs and total organic carbon, and between SCCP/MCCPs and other persistent organic matter, including polybrominated diethyl ethers, polychlorinated biphenyls, antibiotics, and plasticizers. The average ratios of MCCPs to SCCPs in most samples were divided into 11 and 16, implying the manufacturing and use of at least two types of CP technical mixtures in China. The composition of SCCP/MCCPs were similar to that in their commercial products. Ecological risk assessments by two approaches, including the Federal Environmental Quality Guidelines and Risk Quotient, both revealed that SCCP/MCCP in surface sediments confer an ecological risk. ENVIRONMENTAL IMPLICATION: SCCPs and MCCPs can be considered "hazardous materials" because of their massive production and their potential persistence, long-distance transfer, bioaccumulation potential, and toxicity. This research conducted a comprehensive study on SCCP/MCCP in black-odorous urban river sediments across China and revealed their environmental risk, which may improve understanding of SCCP/MCCP contamination characteristics.
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Affiliation(s)
- Ke-Lan Guan
- State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Resources Utilization and Protection, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, People's Republic of China; University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Xiao-Jun Luo
- State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Resources Utilization and Protection, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, People's Republic of China; Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, People's Republic of China; CAS Center for Excellence in Deep Earth Science, Guangzhou, 510640, People's Republic of China.
| | - Qi-Hong Lu
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-Sen University, Guangzhou, 510006, People's Republic of China
| | - Chen-Chen Huang
- State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Resources Utilization and Protection, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, People's Republic of China; University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Xue-Meng Qi
- State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Resources Utilization and Protection, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, People's Republic of China; University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Yan-Hong Zeng
- State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Resources Utilization and Protection, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, People's Republic of China; Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, People's Republic of China; CAS Center for Excellence in Deep Earth Science, Guangzhou, 510640, People's Republic of China
| | - Bi-Xian Mai
- State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Resources Utilization and Protection, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, People's Republic of China; Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, People's Republic of China; CAS Center for Excellence in Deep Earth Science, Guangzhou, 510640, People's Republic of China
| | - Shan-Quan Wang
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-Sen University, Guangzhou, 510006, People's Republic of China
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Shao Y, He Q, Fu Y, Liu Y. Construction of the comprehensive evaluation system of waterbody pollution degree and the response of sedimentary microbial community. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 317:120837. [PMID: 36493934 DOI: 10.1016/j.envpol.2022.120837] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 11/06/2022] [Accepted: 12/05/2022] [Indexed: 06/17/2023]
Abstract
This study proposed and established a comprehensive evaluation system for the pollution degree of the waterbody by taking overlying water and sediment as a whole. By dividing different sampling points into three gradients according to the pollution degree, the changes in sedimentary microbes under various pollution gradients were compared. The results showed that microbial diversity, abundance and specific OTUs decreased significantly with the increase in pollution degree. Meanwhile, Firmicutes, Bacteroidota and Caldiseriota increased in the severely polluted group, while Chloroflexi and Acidobacteriota decreased. Spearman correlation analysis and co-occurrence network revealed that COD, pH in overlying water, and Mn, Fe in sediments were the most significant pollution degree evaluation indicators affecting sedimentary microorganisms, which drove the sedimentary microbial communities dominated by Proteobacteria and Firmicutes. FAPROTAX functional prediction indicated that increased pollution levels led to the weakening of functional genes related to nitrogen metabolism and sulfur metabolism and the increase of functional genes related to carbon metabolism in sediment microorganisms. This study not only provided new insights into waterbody pollution evaluation but also verified the feasibility of this evaluation method by the response of sedimentary microbial communities to different pollution degrees.
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Affiliation(s)
- Yitong Shao
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 611756, China
| | - Qi He
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 611756, China
| | - Yongsheng Fu
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 611756, China
| | - Yiqing Liu
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 611756, China.
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48
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Liang Z, Abdillah A, Fang W, Qiu R, Mai B, He Z, Juneau P, Gomes MP, Priadi CR, Wang S. Unique microbiome in organic matter-polluted urban rivers. GLOBAL CHANGE BIOLOGY 2023; 29:391-403. [PMID: 36203244 DOI: 10.1111/gcb.16472] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 08/20/2022] [Accepted: 09/30/2022] [Indexed: 06/16/2023]
Abstract
Approximately half of the global annual production of wastewater is released untreated into aquatic environments, which results in worldwide organic matter pollution in urban rivers, especially in highly populated developing countries. Nonetheless, information on microbial community assembly and assembly-driving processes in organic matter-polluted urban rivers remains elusive. In this study, a field study based on water and sediment samples collected from 200 organic matter-polluted urban rivers of 82 cities in China and Indonesia is combined with laboratory water-sediment column experiments. Our findings demonstrate a unique microbiome in these urban rivers. Among the community assembly-regulating factors, both organic matter and geographic conditions play major roles in determining prokaryotic and eukaryotic community assemblies, especially regarding the critical role of organic matter in regulating taxonomic composition. Using a dissimilarity-overlap approach, we found universality in the dynamics of water and sediment community assembly in organic matter-polluted urban rivers, which is distinctively different from patterns in eutrophic and oligotrophic waters. The prokaryotic and eukaryotic communities are dominated by deterministic and stochastic processes, respectively. Interestingly, water prokaryotic communities showed a three-phase cyclic succession of the community assembly process before, during, and after organic matter pollution. Our study provides the first large-scale and comprehensive insight into the prokaryotic and eukaryotic community assembly in organic matter-polluted urban rivers and supports their future sustainable management.
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Affiliation(s)
- Zhiwei Liang
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, China
| | - Ayik Abdillah
- Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Indonesia, Depok, Indonesia
| | - Wenwen Fang
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, China
| | - Rongliang Qiu
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, China
| | - Bixian Mai
- State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China
| | - Zhili He
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, China
| | - Philippe Juneau
- Ecotoxicology of Aquatic Microorganisms Laboratory, GRIL, EcotoQ, TOXEN, Department of Biological Sciences, Université du Québec à Montréal, Montréal, Quebec, Canada
| | - Marcelo Pedrosa Gomes
- Laboratório de Fisiologia de Plantas sob Estresse, Departamento de Botânica, Setor de Ciências Biológicas, Universidade Federal do Paraná, Curitiba, Paraná, Brazil
| | - Cindy Rianti Priadi
- Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Indonesia, Depok, Indonesia
| | - Shanquan Wang
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, China
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Wang D, Xu S, Zhou S, Wang S, Jiang C, Sun B, Wang X, Yang D, Zuo J, Wang H, Zhuang X. Partial nitrification in free nitrous acid-treated sediment planting Myriophyllum aquaticum constructed wetland strengthens the treatment of black-odor water. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 845:157287. [PMID: 35835191 DOI: 10.1016/j.scitotenv.2022.157287] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Revised: 07/06/2022] [Accepted: 07/07/2022] [Indexed: 06/15/2023]
Abstract
Black-odor water pollution in rural areas, especially swine wastewater, can lead to the deterioration of water quality and thus seriously affect the daily life of people in the area. However, there is a lack of effective treatment measures with simultaneous attention to carbon, nitrogen and sulfur pollution in rural black-odor water bodies. This study evaluated the feasibility of an in-situ pilot-scale constructed wetland (CW) for the synchronous removal of COD, ammonium, and sulfur compounds in the swine wastewater. In this study, the operation strategy of CW sediment pretreated with free nitrous acid (FNA) and Myriophyllum aquaticum plantation was established. Throughout the 114-day operation, the total removal efficiencies of COD and ammonium nitrogen in experimental groups were 81.2 ± 4.2 % and 72.8 ± 1.8 %, respectively, which were significantly higher than CW without any treatment. Removal efficiencies of Sulfur compounds, i.e. sulfide, sulfate, thiosulfate, and sulfite, were 92.3 ± 1.9 % (61.2 % higher than the no-treatment group), 42.1 ± 3.8 %, 97.9 ± 1.7 %, and 42.7 ± 4.5 % respectively. High-throughput sequencing and qPCR revealed that experimental group significantly increased denitrification genes (nirK, nosZ) and sulfur oxidation genes (soxB, fccAB) and enriched the corresponding microbial taxa (Bacillus, Conexibacter and Clostridium sensu stricto). Moreover, metabolic pathways related to nitrogen and sulfur and the degradation of organic matter were up-regulated. These results indicated that partial nitrification in CW planted with M. aquaticum promoted sulfur oxidation denitrification and heterotrophic denitrification. Overall, the in-situ pilot-scale study revealed that the cultivation of M. aquaticum in FNA-treated CW can be a sustainable approach to treat black-odor water bodies.
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Affiliation(s)
- Danhua Wang
- School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui 230027, China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Shengjun Xu
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Sining Zhou
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shuseng Wang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Cancan Jiang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bo Sun
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xu Wang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Dongmin Yang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Jialiang Zuo
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Huacai Wang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Xuliang Zhuang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China.
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50
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Chen CX, Yang FJ, Deng YY, A D. Optimization of constructed wetlands on purifying black-odorous water and their potential purification mechanism. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2022; 86:2175-2183. [PMID: 36378173 DOI: 10.2166/wst.2022.351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Black-odorous water has become a common and widespread problem in recent decades. In this study, nine constructed wetlands (CWs) with different flow types, filters, plants, and hydraulic loadings were designed according to an orthogonal array (L9 (34), and were used for the purification of black-odorous water in summer and winter. The results showed that CWs are regarded as effective to purify black-odorous water in both seasons. Microbial degradation is the major removal pathway of pollutants in CWs during summer, while the joint effect of biodegradation and adsorption is the main treatment route during winter. Flow type and hydraulic loading appear to be the most important factors impacting the purification performance of CWs, by changing the redox condition of systems and retention time of contaminants, respectively. 'Vertical flow-zeolite filter-high loading' is proposed as the best parameter selection for CWs on the purification of black-odorous water: among them, CWs with vertical flow have better oxygen transport capacity that is conductive to aerobic processes of pollutants, zeolite substrates may adsorb more nitrogen via ion exchange, higher hydraulic loadings can extend the contact time between contaminants and filters, and regulate the water temperature for microbial activity.
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Affiliation(s)
- Chun-Xing Chen
- Shenzhen Academy of Environmental Sciences, Shenzhen 518001, China; State Environmental Protection Key Laboratory of Drinking Water Source Management and Technology, Shenzhen 518001, China
| | - Feng-Juan Yang
- China Water Resources Pearl River Planning Surveying & Designing Co., Ltd, Guangzhou 510610, China
| | - Yang-Yang Deng
- Engineering and Technology Research Center for Agricultural Land Pollution Integrated Prevention and Control of Guangdong Higher Education Institute, College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China E-mail:
| | - Dan A
- Engineering and Technology Research Center for Agricultural Land Pollution Integrated Prevention and Control of Guangdong Higher Education Institute, College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China E-mail:
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