51
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Zhang H, Liu N, Zhao J, Ge F, Xu Y, Chen Y. Disturbance of photosystem II-oxygen evolution complex induced the oxidative damage in Chlorella vulgaris under the stress of cetyltrimethylammonium chloride. CHEMOSPHERE 2019; 223:659-667. [PMID: 30802831 DOI: 10.1016/j.chemosphere.2019.01.135] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Revised: 01/08/2019] [Accepted: 01/23/2019] [Indexed: 06/09/2023]
Abstract
Oxygen evolution complex (OEC) in photosystem II (PSII) is sensitive to environmental stressors. However, oxidative damage mechanism in PSII-OEC is still unclear. Here, we investigated photosynthetic performance of PSII, oxidative stress and antioxidant reaction induced by reactive oxygen species (ROS) in a unicellular green alga Chlorella vulgaris (C. vulgaris) under the stress of cetyltrimethylammonium chloride (CTAC). From the changes of chlorophyll fluorescence parameters and PSII activity, it was proved that the electron transport, which occurred initially at the electron donor side of OEC, was disturbed by CTAC. Moreover, a significant decrease of the oxygen evolution rate in OEC (40.95%) while an increase of ROS (50.50%) was obtained after the exposure to 0.6 mg/L CTAC compared to the control (without CTAC), confirming that more oxygen transferred to ROS under the stress. Furthermore, the increased ROS in chloroplast and the structural destruction in thylakoid membrane were observed, respectively. These results proved that oxidative damage mechanism in PSII-OEC is mainly through the reduction of oxygen evolution and the production of excessive ROS, thus leading to the destruction of OEC performance and chloroplast structure.
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Affiliation(s)
- Han Zhang
- Department of Environment, College of Environment and Resources, Xiangtan University, Xiangtan 411105, PR China
| | - Na Liu
- Department of Environment, College of Environment and Resources, Xiangtan University, Xiangtan 411105, PR China
| | - Jinfeng Zhao
- Department of Environment, College of Environment and Resources, Xiangtan University, Xiangtan 411105, PR China
| | - Fei Ge
- Department of Environment, College of Environment and Resources, Xiangtan University, Xiangtan 411105, PR China.
| | - Yin Xu
- Department of Environment, College of Environment and Resources, Xiangtan University, Xiangtan 411105, PR China
| | - Yuehui Chen
- Department of Environment, College of Environment and Resources, Xiangtan University, Xiangtan 411105, PR China
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Zhang X, Chen Z, Zhou Y, Ma Y, Zhang H, Zhou L, Fang S. Comparisons of Nitrogen Removal and Microbial Communities in Anammox Systems upon Addition of Copper-Based Nanoparticles and Copper Ion. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b00182] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xiaojing Zhang
- Henan Engineering Research Center of Chemical Engineering Separation Process Intensification, Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China 450001
| | - Zhao Chen
- Henan Engineering Research Center of Chemical Engineering Separation Process Intensification, Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China 450001
| | - Yue Zhou
- Henan Engineering Research Center of Chemical Engineering Separation Process Intensification, Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China 450001
| | - Yongpeng Ma
- Henan Engineering Research Center of Chemical Engineering Separation Process Intensification, Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China 450001
| | - Hongzhong Zhang
- Henan Engineering Research Center of Chemical Engineering Separation Process Intensification, Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China 450001
| | - Liming Zhou
- Henan Engineering Research Center of Chemical Engineering Separation Process Intensification, Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China 450001
| | - Shaoming Fang
- Henan Engineering Research Center of Chemical Engineering Separation Process Intensification, Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China 450001
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53
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Yazdanbakhsh AR, Rafiee M, Daraei H, Amoozegar MA. Responses of flocculated activated sludge to bimetallic Ag-Fe nanoparticles toxicity: Performance, activity enzymatic, and bacterial community shift. JOURNAL OF HAZARDOUS MATERIALS 2019; 366:114-123. [PMID: 30504079 DOI: 10.1016/j.jhazmat.2018.11.098] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 11/25/2018] [Accepted: 11/26/2018] [Indexed: 06/09/2023]
Abstract
Ever-increasing production and use of nanoparticles (NPs) have aroused overarching concerns for their toxic effects on the environment and human. In the present study, the toxic effects of Silver (Ag) and Iron (Fe) NPs on the performance of activated sludge were investigated under continuous aerobic/anoxic/anaerobic conditions in laboratory-scale sequencing batch reactors (SBRs).Activated sludge was exposed to various concentrations (5-100 mg/L) of Ag-Fe NPs for 60 days and its response was assessed through the enzymatic activity, COD, nitrogen (TN) and phosphorus (TP) removal, toxicity tests, as well as variations in bacterial community. Compared with the pristine control sample, the exposure to NPs suppressed TN and TP removal efficiencies. Indeed, the respiration rate and biomass concentration were significantly affected by the NPs. Although the simultaneous exposure to Ag-Fe NPs did affect the integrity of cell membrane (LDH) and key enzymes activities, the higher concentration induced an increased generation of reactive oxygen species (ROS). The metagenome analysis revealed a marked shift in the microbial community structure suggesting that both heterotrophic and autotrophic communities were affected by the presence of Ag-Fe NPs. Our results provide some evidence for compounded effects of NPs in their simultaneous presence, and generate new leads for future research efforts.
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Affiliation(s)
- Ahmad Reza Yazdanbakhsh
- Department of Environmental Health Engineering, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Rafiee
- Department of Environmental Health Engineering, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hasti Daraei
- Department of Environmental Health Engineering, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Mohammad Ali Amoozegar
- Extremophiles Lab., Dept. of Microbiology, School of Biology, College of Science, University of Tehran, Tehran, Iran
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54
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Ge CH, Dong Y, Li H, Li Q, Ni SQ, Gao B, Xu S, Qiao Z, Ding S. Nitritation-anammox process - A realizable and satisfactory way to remove nitrogen from high saline wastewater. BIORESOURCE TECHNOLOGY 2019; 275:86-93. [PMID: 30579105 DOI: 10.1016/j.biortech.2018.12.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 12/08/2018] [Accepted: 12/10/2018] [Indexed: 05/14/2023]
Abstract
In this study, acclimation of freshwater nitritation-anammox sludge to remove nitrogen in high saline and hypersaline wastewater was evaluated, during which the microbes activity and microbial community revolution were revealed to understand the fate of a nitritation-anammox process (SNAP) in response to increasing salt stress. By enhanced aeration, the SNAP system can treat saline (3%) ammonium-rich (185 mg/L) wastewater after gradual adaption. Hypersalinity (5%) caused final deterioration of the SNAP system due to a severe inhibition on anammox activity. Genera Kuenenia (anammox), Nitrosomonas (AOB) and Nitrosovibrio (AOB) bacteria were salt adaptable microbes, while genus Nitrospira (NOB) bacteria were sensitive to salinity. Under the enhanced aeration, AOB bacteria could bear 3% salinity with possible enriched ammonia monooxygenase to stimulate the conversion of ammonium to nitrite by producing more intermediate-hydroxylamine, which could alleviate the negative effect of insufficient hydroxylamine oxidase members in AOB bacteria.
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Affiliation(s)
- Cheng-Hao Ge
- Shenzhen Research Institute of Shandong University, Shenzhen, PR China; School of Environmental Science and Engineering, Shandong University, Qingdao, PR China; Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, PR China
| | - Ying Dong
- Shenzhen Research Institute of Shandong University, Shenzhen, PR China; School of Environmental Science and Engineering, Shandong University, Qingdao, PR China
| | - Hongmin Li
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, PR China; University of Chinese Academy of Sciences, Beijing, PR China
| | - Qianxia Li
- Shenzhen Research Institute of Shandong University, Shenzhen, PR China; School of Environmental Science and Engineering, Shandong University, Qingdao, PR China
| | - Shou-Qing Ni
- Shenzhen Research Institute of Shandong University, Shenzhen, PR China; School of Environmental Science and Engineering, Shandong University, Qingdao, PR China.
| | - Baoyu Gao
- School of Environmental Science and Engineering, Shandong University, Qingdao, PR China
| | - Shiping Xu
- School of Environmental Science and Engineering, Shandong University, Qingdao, PR China
| | - Zhuangming Qiao
- Shandong Meiquan Environmental Protection Technology Co., Ltd., Jinan, PR China
| | - Shaowu Ding
- Shandong Wanhao Fertilizer Co., Ltd., Jinan, PR China
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55
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Zhang ZZ, Cheng YF, Liu YY, Zhang Q, Zhu BQ, Jin RC. Deciphering the evolution characteristics of extracellular microbial products from autotrophic and mixotrophic anammox consortia in response to nitrogen loading variations. ENVIRONMENT INTERNATIONAL 2019; 124:501-510. [PMID: 30685452 DOI: 10.1016/j.envint.2018.12.034] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 12/04/2018] [Accepted: 12/15/2018] [Indexed: 06/09/2023]
Abstract
Extracellular microbial products (EMP) in biological wastewater treatment systems vary with operational conditions and in turn indicate the metabolic status of functional bacteria. In this study, the response of EMP from autotrophic and mixotrophic anammox consortia (AAC and MAC) to the variation of total nitrogen loading rates (TNLR) were investigated as well as their correlations with the community evolution. The variation of TNLR showed a significantly negative correlation with the production of bound microbial products (BMP) but a significantly positive correlation with the production of soluble microbial products (SMP). The presence of organic matters with COD/TN ratio of 0.15 limited the abundance of anammox bacteria in MAC at the full-load phase and suppressed their proliferation at the restart phase. Due to the improved abundance of carbohydrate metabolism genes, MAC with lower abundance of anammox bacteria produced lower soluble polysaccharides than AMC at the full-load phase. Furthermore, four components (C1-4) were identified on the excitation-emission matrix fluorescence spectra of SMP using parallel factor analysis. C1 exhibited a relative higher proportion at the full-load phase, whereas C4 was generated only at the light-load phase or empty-load phase. At the restart phase, C2 and C3 appeared simultaneously and accounted for a high proportion. The information of four components also suggested the metabolic status of AC as revealed by the specific anammox activity, which therefore provided a novel complementary but direct approach for monitoring the operation status of anammox bioreactors.
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Affiliation(s)
- Zheng-Zhe Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Ya-Fei Cheng
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Ying-Yi Liu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Qian Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Bing-Qian Zhu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Ren-Cun Jin
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China.
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56
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Transformation of the zero valent iron dosage effect on anammox after long-term culture: From inhibition to promotion. Process Biochem 2019. [DOI: 10.1016/j.procbio.2019.01.014] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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57
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Huangfu X, Xu Y, Liu C, He Q, Ma J, Ma C, Huang R. A review on the interactions between engineered nanoparticles with extracellular and intracellular polymeric substances from wastewater treatment aggregates. CHEMOSPHERE 2019; 219:766-783. [PMID: 30572231 DOI: 10.1016/j.chemosphere.2018.12.044] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 11/18/2018] [Accepted: 12/05/2018] [Indexed: 06/09/2023]
Abstract
Engineered nanoparticles (ENPs) will inevitably enter wastewater treatment plants (WWTPs) due to their widespread application; thus, it is necessary to study the migration and transformation of nanoparticles in sewage treatment systems. Extracellular polymeric substances (EPSs) such as polysaccharides, proteins, nucleic acids, humic acids and other polymers are polymers released by microorganisms under certain conditions. Intracellular polymeric substances (IPSs) are microbial substances contained in the body with compositions similar to those of extracellular polymers. In this review, we summarize the characteristics of EPSs and IPSs from sewage-collecting microbial aggregates containing pure bacteria, activated sludge, granular sludge and biofilms. We also further investigate the dissolution, adsorption, aggregation, deposition, oxidation and other chemical transformation processes of nanoparticles, such as metals, metal oxides, and nonmetallic oxides. In particular, the review deeply analyzes the migration and transformation mechanisms of nanoparticles in EPS and IPS matrices, including physical, chemical, biological interactions mechanisms. Moreover, various factors, such as ionic strength, ionic valence, pH, light, oxidation-reduction potential and dissolved oxygen, influencing the interaction mechanisms are discussed. In recent years, studies on the interactions between EPSs/IPSs and nanoparticles have gradually increased, but the mechanisms of these interactions are seldom explored. Therefore, developing a systematic understanding of the migration and transformation mechanisms of ENPs is significant.
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Affiliation(s)
- Xiaoliu Huangfu
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, Faculty of Urban Construction and Environmental Engineering, Chongqing University 400044, China.
| | - Yanghui Xu
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, Faculty of Urban Construction and Environmental Engineering, Chongqing University 400044, China
| | - Caihong Liu
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, Faculty of Urban Construction and Environmental Engineering, Chongqing University 400044, China
| | - Qiang He
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, Faculty of Urban Construction and Environmental Engineering, Chongqing University 400044, China.
| | - Jun Ma
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, China
| | - Chengxue Ma
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, Faculty of Urban Construction and Environmental Engineering, Chongqing University 400044, China
| | - Ruixing Huang
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, Faculty of Urban Construction and Environmental Engineering, Chongqing University 400044, China
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58
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Zhang ZZ, Cheng YF, Zhu BQ, Liu YY, Zhang Q, Jin RC. Achieving completely anaerobic ammonium removal over nitrite (CAARON) in one single UASB reactor: Synchronous and asynchronous feeding regimes of organic carbon make a difference. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 653:342-350. [PMID: 30412879 DOI: 10.1016/j.scitotenv.2018.10.401] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 10/29/2018] [Accepted: 10/29/2018] [Indexed: 06/08/2023]
Abstract
At least 11% of total nitrogen (TN) remains in the anammox effluent, making it difficult to meet increasingly stringent discharge standards. To overcome this bottleneck, an innovative process to achieve completely anaerobic ammonium removal over nitrite (CAARON) in one single up-flow anaerobic sludge blanket reactor was proposed in this study. The synchronous feeding of acetate at a C/N (nitrite) ratio of 0.6 significantly reduced the nitrogen removal capacity of anammox reactor by limiting the abundance and metabolism of anammox bacteria. In contrast, the asynchronous feeding of acetate optimized the partition of the reactor column into two specific compartments: the lower half favoring anammox and the upper half dominated by DEAMOX (DEnitrifying AMmonium Oxidation). A high TN removal efficiency of 96.2±0.4% and a low effluent TN concentration of 9.3±0.9mgL-1 were obtained under a high TN loading rate of 9.0kgNm-3d-1. The dominant functional microbes in the CAARON process were identified as Candidatus Kuenenia and Thauera, which were responsible for the anammox and denitratation reactions, respectively. Overall, the results in this study provide valuable insight into the coupling of anammox with denitratation, which is a cost-efficient approach for treating ammonium-rich wastewaters.
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Affiliation(s)
- Zheng-Zhe Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Ya-Fei Cheng
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Bing-Qian Zhu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Ying-Yi Liu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Qian Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Ren-Cun Jin
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China.
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59
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Miao L, Wang P, Hou J, Yao Y, Liu Z, Liu S. Low concentrations of copper oxide nanoparticles alter microbial community structure and function of sediment biofilms. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 653:705-713. [PMID: 30759596 DOI: 10.1016/j.scitotenv.2018.10.354] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 10/24/2018] [Accepted: 10/26/2018] [Indexed: 06/09/2023]
Abstract
In this study, we investigated the effects of copper oxide (CuO) NPs on freshwater sediment biofilms in terms of the functional properties and microbial community structure. Biofilms were incubated in microcosms and CuO NPs (1 mg/L uncoated and humic-acid-coated) were exposed with Cu2+ (Cu(NO3)2) as the positive control. As determined from DO (dissolved oxygen) microelectrodes measurements, a high-DO region emerged inside the biofilms after 5-day exposure to CuO NPs compared with those before NP additions, which suggested CuO NPs inhibit the oxygen respiration activity. These results were consistent with the decreased heterotrophic respiration. CuO NPs significantly altered the bacterial community composition and decreased the abundances of Anaerolineaceae, Acidobacteria, Aminicenantes, and Anaerolinea. Functional analysis from PICRUSt (Phylogenetic Investigation of Communities by Reconstruction of Unobserved States)-predicted metagenomes indicated that bacterial genera depleted by CuO NP treatments were related to carbohydrate and glycan biosynthesis and metabolism, and biosynthesis of other secondary metabolites. These functional profiles combined with the decreased activities of extracellular enzymes, β-glucosidase (GLU) and l-leucine aminopeptidase (LAP), suggested that the introduction of CuO NPs exhibit negative effects on the biogeochemical processes and the cycling of carbon and nitrogen in biofilm systems. Whereas these toxic effects of CuO NPs could be mitigated when the aquatic environment is enriched with natural organic matters such as humic acid.
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Affiliation(s)
- Lingzhan Miao
- Ministry of Education Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, College of Environment, Hohai University, Nanjing 210098, People's Republic of China.
| | - Peifang Wang
- Ministry of Education Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, College of Environment, Hohai University, Nanjing 210098, People's Republic of China.
| | - Jun Hou
- Ministry of Education Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, College of Environment, Hohai University, Nanjing 210098, People's Republic of China.
| | - Yu Yao
- Ministry of Education Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, College of Environment, Hohai University, Nanjing 210098, People's Republic of China
| | - Zhilin Liu
- Ministry of Education Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, College of Environment, Hohai University, Nanjing 210098, People's Republic of China
| | - Songqi Liu
- Ministry of Education Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, College of Environment, Hohai University, Nanjing 210098, People's Republic of China
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60
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Chen QQ, Xu LZJ, Zhang ZZ, Sun FQ, Shi ZJ, Huang BC, Fan NS, Jin RC. Insight into the short- and long-term effects of quinoline on anammox granules: Inhibition and acclimatization. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 651:1294-1301. [PMID: 30360261 DOI: 10.1016/j.scitotenv.2018.09.285] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2018] [Revised: 08/30/2018] [Accepted: 09/21/2018] [Indexed: 06/08/2023]
Abstract
The short- and long-term influence of quinoline on the properties of anaerobic ammonium oxidation (anammox) biogranules was evaluated. During batch tests, the bioactivity of anammox granules in the presence of different quinoline concentrations was monitored, and the IC50 of quinoline was calculated to be 13.1 mg L-1 using a non-competitive inhibition model. The response of anammox granules to pre-exposure to quinoline was dependent on metabolic status, and the presence of both quinoline and NO2--N had a rapid detrimental effect, resulting in a 64.5% decrease within 12 h. During continuous-flow experiments, the nitrogen removal rate (NRR) of the reactor decreased sharply within 3 days in the presence of 10 mg L-1 quinoline and then was restored to 2.6 kg N m-3 d-1. In the presence of quinoline-induced stress, the specific anammox activity and levels of extracellular polymeric substance and heme c were decreased, while settling velocity persistently increased. After cultivation and acclimation obtained by adding a medium level of quinoline to the influent, the anammox granule sludge was able to tolerate 10 mg L-1 quinoline in 178 days.
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Affiliation(s)
- Qian-Qian Chen
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Lian-Zeng-Ji Xu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Zao-Zao Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Fan-Qi Sun
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Zhi-Jian Shi
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Bao-Cheng Huang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Nian-Si Fan
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China.
| | - Ren-Cun Jin
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China.
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61
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Song YX, Lu CH, Liu P, Chai XL, Chen X, Min XB, Tang CJ, Chai LY. Insights into the role of extracellular polymeric substances in Zn 2+ adsorption in different biological sludge systems. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:36680-36692. [PMID: 30377966 DOI: 10.1007/s11356-018-3451-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 10/11/2018] [Indexed: 05/27/2023]
Abstract
The adsorption behavior of Zn2+ in four different biological sludge systems, i.e. activated sludge, denitrification sludge, short-cut nitrification sludge, and anammox granules, was investigated. The results indicated that all sludge samples possessed considerable potential for Zn2+ adsorption. Short-cut nitrification sludge possessed the highest Zn2+ maximum adsorption capacity (qm) of 36.4 mg g SS-1, which was much higher than other sludges applied (12.8-14.7 mg g SS-1). Besides, the adsorption rate for short-cut nitrification sludge was fastest among the four types of sludge after fitting with a pseudo-second-order rate equation. Comparing with the physicochemical properties of the four sludges, the soluble extracellular polymeric substances (EPS), especially soluble polysaccharide (PS), played a prior role in binding metal cations (i.e., Zn). The present study also showed that with less than 30% of Zn2+ trapped by EPS, 61.6-71.9% of Zn2+could be harvested directly by cells, indicating that the protecting capability by EPS was limited. Therefore, it is important to remove metal ions as early as possible if the activated sludge processes encountered high stress of heavy metal. Graphical abstract ᅟ.
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Affiliation(s)
- Yu-Xia Song
- Department of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, China
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, 410083, Hunan, China
| | - Cheng-Hai Lu
- Department of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, China
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, 410083, Hunan, China
| | - Peng Liu
- Department of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, China
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, 410083, Hunan, China
| | - Xi-Lin Chai
- The Jiangxi Provincial Collaborative Research Institute for Environmental Protection Industry, Wannian, 335500, China
| | - Xi Chen
- Department of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, China
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, 410083, Hunan, China
| | - Xiao-Bo Min
- Department of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, China
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, 410083, Hunan, China
| | - Chong-Jian Tang
- Department of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, China.
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, 410083, Hunan, China.
| | - Li-Yuan Chai
- Department of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, China
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, 410083, Hunan, China
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62
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Ma B, Li S, Wang S, Gao M, Guo L, She Z, Zhao Y, Jin C, Yu N, Zhao C. Effect of Fe3O4 nanoparticles on composition and spectroscopic characteristics of extracellular polymeric substances from activated sludge. Process Biochem 2018. [DOI: 10.1016/j.procbio.2018.08.027] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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63
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Zhang ZZ, Cheng YF, Xu LZJ, Bai YH, Xu JJ, Shi ZJ, Shen YY, Jin RC. Evaluating the effects of metal oxide nanoparticles (TiO 2, Al 2O 3, SiO 2 and CeO 2) on anammox process: Performance, microflora and sludge properties. BIORESOURCE TECHNOLOGY 2018; 266:11-18. [PMID: 29940437 DOI: 10.1016/j.biortech.2018.06.052] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 06/12/2018] [Accepted: 06/16/2018] [Indexed: 06/08/2023]
Abstract
The increasing use of engineered metal oxide nanoparticles (MONPs) in consumer products raises great concerns about their environmental impacts, but their potential impacts on anaerobic ammonium oxidation (anammox) process in wastewater treatment remain unclear. In this study, the presence of MONPs (1, 50, 200 mg L-1) exhibited no visible effects on the nitrogen removal performance of anammox reactors, but high levels (200 mg L-1) of SiO2NPs, Al2O3NPs and CeO2NPs had a distinct effect on shaping the anammox community. Long-term exposure of MONPs caused different responses in the relative abundance of Ca. Kuenenia, the level of functional gene HzsA and the activities of three key enzymes involved in anammox metabolism, but no significant inhibition effects on specific anammox activity were detected. Overall, the effects of MONPs on anammox community structure and sludge properties depended on their types and levels and followed the order SiO2 > CeO2 > Al2O3 > TiO2.
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Affiliation(s)
- Zheng-Zhe Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Ya-Fei Cheng
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Lian-Zeng-Ji Xu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Yu-Hui Bai
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Jia-Jia Xu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Zhi-Jian Shi
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Yang-Yang Shen
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Ren-Cun Jin
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China.
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64
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Zhang ZZ, Cheng YF, Xu LZJ, Wu J, Bai YH, Xu JJ, Shi ZJ, Jin RC. Discrepant effects of metal and metal oxide nanoparticles on anammox sludge properties: A comparison between Cu and CuO nanoparticles. BIORESOURCE TECHNOLOGY 2018; 266:507-515. [PMID: 30005413 DOI: 10.1016/j.biortech.2018.06.094] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 06/22/2018] [Accepted: 06/27/2018] [Indexed: 06/08/2023]
Abstract
Metal and metal oxide nanoparticles (NPs) show differences in antimicrobial activity due to different chemical and physical properties. Using copper as a representative example, this study compared the NP effects on anaerobic ammonium oxidation (anammox) bacteria in wastewater treatment. Long-term exposure to 5 mgCu L-1 CuNPs reduced the physiological activity and abundance of anammox bacteria, thereby causing deterioration of reactor performance. However, anammox granules exhibited stronger resistance and resilience to perturbation by 1-160 mgCu L-1 CuONPs, and no adverse effects on performance were observed. Moreover, the level of Cu(II) released from NPs in the influent exhibited good correlations with variations of the community structure and sludge properties. Therefore, the effects of Cu-based NPs on anammox sludge properties are dependent on their forms and levels, and their discrepant effects are partially attributed to their ability to release ionic copper.
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Affiliation(s)
- Zheng-Zhe Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Ya-Fei Cheng
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Lian-Zeng-Ji Xu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Jing Wu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Yu-Hui Bai
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Jia-Jia Xu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Zhi-Jian Shi
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Ren-Cun Jin
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China.
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65
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Jiang XY, Cheng YF, Zhu WQ, Bai YH, Xu LZJ, Wu XQ, Jin RC. Effect of chromium on granule-based anammox processes. BIORESOURCE TECHNOLOGY 2018; 260:1-8. [PMID: 29601995 DOI: 10.1016/j.biortech.2018.03.055] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 03/08/2018] [Accepted: 03/11/2018] [Indexed: 06/08/2023]
Abstract
In this study, the feasibility of application of anaerobic ammonium oxidation (anammox) to teat wastewater containing chromium was assessed. Anammox granule activity decreased with increasing Cr(VI) concentration and pre-exposure time in batch tests, and the 50% inhibition concentration of Cr(VI) on anammox biomass was 296.5 mg L-1. Approximately 93.9% chromium was absorbed by loosely bound-extracellular polymeric substances and tightly bound-extracellular polymeric substances when less than 60 mg L-1 Cr(VI) was added. During long-term operation in up-flow anaerobic sludge blanket reactor, significant inhibitory effects anammox performance were observed for Cr(VI) concentrations up to 2 mg L-1. The nitrogen removal rate (NRR) rapidly decreased to 1.49 ± 0.89 kg N m-3 d-1, whereas the NRR was 11.37 ± 1.30 kg N m-3 d-1 in a control reactor. Compared with initial levels, specific anammox granule activity was 22%. The tolerance of the anammox process to Cr(VI) can be enhanced after a long-term adaptive phase.
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Affiliation(s)
- Xiao-Yan Jiang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Ya-Fei Cheng
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Wei-Qin Zhu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Yu-Hui Bai
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Lian-Zeng-Ji Xu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Xue-Qi Wu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Ren-Cun Jin
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China.
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66
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Xu JJ, Zhang ZZ, Ji ZQ, Zhu YH, Qi SY, Tang CJ, Jin RC. Short-term effects of nanoscale Zero-Valent Iron (nZVI) and hydraulic shock during high-rate anammox wastewater treatment. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 215:248-257. [PMID: 29573675 DOI: 10.1016/j.jenvman.2018.03.069] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 02/20/2018] [Accepted: 03/14/2018] [Indexed: 06/08/2023]
Abstract
The stability and resilience of an anaerobic ammonium oxidation (anammox) system under transient nanoscale Zero-Valent Iron (nZVI) (50, 75 and 100 mg L-1), hydraulic shock (2-fold increase in flow rate) and their combination were studied in an up-flow anaerobic sludge blanket reactor. The response to the shock loads can be divided into three phases i.e. shock, inertial and recovery periods. The effects of the shock loads were directly proportional to the shock intensity. The effluent quality was gradually deteriorated after exposure to high nZVI level (100 mg L-1) for 2 h. The higher effluent sensitivity index and response caused by unit intensity of shock was observed under hydraulic and combined shocks. Notably, the specific anammox activity and the content of heme c were considerably reduced during the shock phase and the maximum loss rates were about 30.5% and 24.8%, respectively. Nevertheless, the extracellular polymeric substance amount in the shock phase was enhanced in varying degrees and variation tendency was disparate at all the tested shock loads. These results suggested that robustness of the anammox system was dependent on the magnitude shocks applied and the reactor resistance can be improved by reducing hydraulic retention time with the increase of nZVI concentration under these circumstances.
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Affiliation(s)
- Jia-Jia Xu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Zheng-Zhe Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Zheng-Quan Ji
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Ying-Hong Zhu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Si-Yu Qi
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Chong-Jian Tang
- Department of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Ren-Cun Jin
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China.
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67
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Zhang ZZ, Cheng YF, Xu LZJ, Bai YH, Xu JJ, Shi ZJ, Zhang QQ, Jin RC. Transient disturbance of engineered ZnO nanoparticles enhances the resistance and resilience of anammox process in wastewater treatment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 622-623:402-409. [PMID: 29220765 DOI: 10.1016/j.scitotenv.2017.12.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 11/26/2017] [Accepted: 12/02/2017] [Indexed: 06/07/2023]
Abstract
The increasing use of engineered nanoparticles (NPs) in consumer and industrial products raises concerns about their environmental impacts, but their potential influence on anaerobic ammonium oxidation (anammox) process in wastewater treatment remains unknown. In this study, the response of granule-based anammox reactor to different loads of ZnONPs was investigated. The introduction of 1-5mgL-1 ZnONPs did not affect reactor performance, but 90% of the nitrogen removal capacity was deprived by a shock of 10mgL-1 ZnONPs within 3days. Anammox activity was significantly inhibited, but no significant stimulation of intracellular reactive oxygen species (ROS) production or extracellular lactate dehydrogenase (LDH) activity was observed. The inhibition was thus mainly due to the accumulation of toxic Zn(II) ions in anammox biomass. However, the resistance and resilience of this anammox reactor to ZnONPs were enhanced by intermittent perturbations in the mode of "shock-recovery". The up-regulated abundance of Zn(II)-exporter ZntA might contribute to the enhanced resistance. In addition, these repeated transient disturbances improved the functional specificity of the anammox community despite the reduction of its diversity. Overall, these results may provide useful references for evaluating and controlling the risk of NPs to anammox process.
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Affiliation(s)
- Zheng-Zhe Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Ya-Fei Cheng
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Lian-Zeng-Ji Xu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Yu-Hui Bai
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Jia-Jia Xu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Zhi-Jian Shi
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Qian-Qian Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Ren-Cun Jin
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China.
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68
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Influence of ZnO nanoparticles on anammox granules: The inhibition kinetics and mechanism analysis by batch assays. Biochem Eng J 2018. [DOI: 10.1016/j.bej.2018.02.006] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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69
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Zhang ZZ, Cheng YF, Bai YH, Xu LZJ, Xu JJ, Shi ZJ, Zhang QQ, Jin RC. Enhanced effects of maghemite nanoparticles on the flocculent sludge wasted from a high-rate anammox reactor: Performance, microbial community and sludge characteristics. BIORESOURCE TECHNOLOGY 2018; 250:265-272. [PMID: 29174904 DOI: 10.1016/j.biortech.2017.11.053] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Revised: 11/14/2017] [Accepted: 11/16/2017] [Indexed: 06/07/2023]
Abstract
Magnetic nanoparticles (NPs) have been widely applied in environmental remediation, biomass immobilization and wastewater treatment, but their potential impact on anaerobic ammonium oxidation (anammox) biomass remains unknown. In this study, the short-term and long-term impacts of maghemite NPs (MHNPs) on the flocculent sludge wasted from a high-rate anammox reactor were investigated. Batch assays showed that the presence of MHNPs up to 200 mg L-1 did not affect anammox activity, reactive oxygen species production, or cell membrane integrity. Moreover, long-term addition of 1-200 mg L-1 MHNPs had no adverse effects on reactor performance. Notably, the specific anammox activity, the abundance of hydrazine synthase structural genes and the content of extracellular polymeric substance were increased with elevated MHNP concentrations. Meanwhile, the community structure was shifted to higher abundance of Candidatus Kuenenia indicated by high-throughput sequencing. Therefore, MHNPs could be applied to enhance anammox flocculent sludge due to their favorable biocompatibility.
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Affiliation(s)
- Zheng-Zhe Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Ya-Fei Cheng
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Yu-Hui Bai
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Lian-Zeng-Ji Xu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Jia-Jia Xu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Zhi-Jian Shi
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Qian-Qian Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Ren-Cun Jin
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China.
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70
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Zhang ZZ, Xu JJ, Shi ZJ, Bai YH, Cheng YF, Hu HY, Jin RC. Unraveling the impact of nanoscale zero-valent iron on the nitrogen removal performance and microbial community of anammox sludge. BIORESOURCE TECHNOLOGY 2017; 243:883-892. [PMID: 28738514 DOI: 10.1016/j.biortech.2017.07.049] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 07/06/2017] [Accepted: 07/09/2017] [Indexed: 06/07/2023]
Abstract
Given the increasing use of nanoscale zero-valent iron (NZVI) particles for environmental remediation and wastewater treatment, their potential impact on anaerobic ammonium oxidation (anammox) bacteria was investigated in this study using anammox sludge. Batch assays showed that NZVI concentrations up to 200mgL-1 did not affect anammox activity, reactive oxygen species production, and cell membrane integrity. The nitrogen removal efficiency of the continuous-flow reactor fluctuated in the presence of 20 or 50mgL-1 NZVI, but it could return to normal over time, even at 200mgL-1 NZVI. 16S rDNA-based high-throughput sequencing indicated that although the presence of 10, 20, 50, and 200mgL-1 NZVI to some extent affected microbial composition, the anammox bacteria (Candidatus Kuenenia) never lost its dominance. The abundance of gene families that are related to the assimilation and utilization of iron was down-regulated in response to the stress of high-level NZVI.
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Affiliation(s)
- Zheng-Zhe Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Jia-Jia Xu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Zhi-Jian Shi
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Yu-Hui Bai
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Ya-Fei Cheng
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Hai-Yan Hu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Ren-Cun Jin
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China.
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71
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Xu Q, Li X, Ding R, Wang D, Liu Y, Wang Q, Zhao J, Chen F, Zeng G, Yang Q, Li H. Understanding and mitigating the toxicity of cadmium to the anaerobic fermentation of waste activated sludge. WATER RESEARCH 2017; 124:269-279. [PMID: 28772139 DOI: 10.1016/j.watres.2017.07.067] [Citation(s) in RCA: 108] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 07/15/2017] [Accepted: 07/25/2017] [Indexed: 06/07/2023]
Abstract
Cadmium (Cd) is present in significant levels in waste activated sludge, but its potential toxicities on anaerobic fermentation of sludge remain largely unknown. This work therefore aims to provide such support. Experimental results showed that the impact of Cd on short-chain fatty acids (SCFA) production from sludge anaerobic fermentation was dose-dependent. The presence of environmentally relevant level of Cd (e.g., 0.1 mg/g VSS) enhanced SCFA production by 10.6%, but 10 mg/g VSS of Cd caused 68.1% of inhibition. Mechanism exploration revealed that although all levels of Cd did not cause extra leakage of intracellular substrates, 0.1 mg/g VSS Cd increased the contents of both soluble and loosely-bound extracellular polymeric substances (EPS), thereby benefitting sludge solubilization. On the contrary, 10 mg/g VSS Cd decreased the levels of all EPS layers, which reduced the content of soluble substrates. It was also found that 0.1 mg/g VSS Cd benefited both the hydrolysis and acidogenesis but 10 mg/g VSS Cd inhibited all the hydrolysis, acidogenesis, and methanogenesis processes. Further investigations with microbial community and enzyme analysis showed that the pertinent presence of Cd enhanced the activities of protease, acetate kinase, and oxaloacetate transcarboxylase whereas 10 mg/g VSS Cd decreased the microbial diversity, the abundances of functional microbes, and the activities of key enzymes. Finally, one strategy that could effectively mitigate the adverse impact of high Cd levels on SCFA production was proposed and examined. This work provides insights into Cd-present sludge fermentation systems, and the findings obtained may guide engineers to manipulate sludge treatment systems in the future.
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Affiliation(s)
- Qiuxiang Xu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Xiaoming Li
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Rongrong Ding
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Dongbo Wang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China.
| | - Yiwen Liu
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Qilin Wang
- Griffith School of Engineering & Centre for Clean Environment and Energy, Griffith University, QLD, Australia
| | - Jianwei Zhao
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Fei Chen
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Guangming Zeng
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Qi Yang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China.
| | - Hailong Li
- School of Energy Science and Engineering, Central South University, Changsha 410083, PR China
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72
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Zhang ZZ, Hu HY, Xu JJ, Shi ZJ, Shen YY, Shi ML, Jin RC. Susceptibility, resistance and resilience of anammox biomass to nanoscale copper stress. BIORESOURCE TECHNOLOGY 2017; 241:35-43. [PMID: 28550773 DOI: 10.1016/j.biortech.2017.05.069] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 05/08/2017] [Accepted: 05/12/2017] [Indexed: 06/07/2023]
Abstract
The increasing use of engineered nanoparticles (NPs) poses an emerging challenge to biological wastewater treatment. The long-term impact of CuNPs on anaerobic ammonium oxidation (anammox) process was firstly investigated in this study. The nitrogen removal capacity of anammox reactor was nearly deprived within 30days under the stress of 5.0mgL-1 CuNPs and the relative abundance of anammox bacteria (Ca. Kuenenia) was decreased from 29.59% to 17.53%. Meanwhile, copper resistance genes associated with the Cus, Cop and Pco systems were enriched to eliminate excess intracellular copper. After the withdrawal of CuNPs from the influent, the nitrogen removal capacity of anammox biomass recovered completely within 70days. Overall, anammox biomass showed susceptibility, resistance and resilience to the stress of CuNPs. Therefore, the potential impacts of ENPs on anammox-based processes should be of great concern.
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Affiliation(s)
- Zheng-Zhe Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Hai-Yan Hu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Jia-Jia Xu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Zhi-Jian Shi
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Yang-Yang Shen
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Man-Ling Shi
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Ren-Cun Jin
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China.
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73
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Zhang ZZ, Xu JJ, Shi ZJ, Cheng YF, Ji ZQ, Deng R, Jin RC. Combined impacts of nanoparticles on anammox granules and the roles of EDTA and S 2- in attenuation. JOURNAL OF HAZARDOUS MATERIALS 2017; 334:49-58. [PMID: 28399429 DOI: 10.1016/j.jhazmat.2017.04.002] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 03/31/2017] [Accepted: 04/01/2017] [Indexed: 06/07/2023]
Abstract
Previous studies investigating the risk of engineered nanoparticles (NPs) to biological wastewater treatment have primarily tested NPs individually; however, limited data are available on the impact of NPs on the anaerobic ammonium oxidation (anammox) process. In this study, the toxicity of CuNPs on anammox granules was investigated individually and in combination with CuONPs or ZnONPs. Exposure to CuNPs at 5mgg-1 suspended solids (SS) decreased the anammox activity to 47.1±8.5%, increased the lactate dehydrogenase level to 110.5±3.4% and increased the extracellular N2H4 concentration by 16-fold but did not cause oxidative stress. The presence of CuONPs or ZnONPs at 5mgg-1 SS did not significantly aggravate or alleviate the toxicity of the CuNPs; however, the introduction of EDTA or S2- could attenuate the adverse effects of the CuNPs, CuONPs and ZnONPs on the anammox granules. EDTA captured Cu ions, whereas S2- shielded and deactivated Cu ions and passivated CuNPs. Therefore, our results indicated that the toxicity of NPs was dependent on the amount of active metal reaching the anammox cells. Overall, the results of this study have filled knowledge gaps and provided insights into the combined toxicity of NPs on anammox biomass.
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Affiliation(s)
- Zheng-Zhe Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Jia-Jia Xu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Zhi-Jian Shi
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Ya-Fei Cheng
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Zheng-Quan Ji
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Rui Deng
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Ren-Cun Jin
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China.
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