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Xiang Y, Lan J, Dong Y, Zhou M, Hou H, Huang BT. Pollution control performance of solidified nickel-cobalt tailings on site: Bioavailability of heavy metals and microbial response. JOURNAL OF HAZARDOUS MATERIALS 2024; 471:134295. [PMID: 38631253 DOI: 10.1016/j.jhazmat.2024.134295] [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: 04/10/2024] [Accepted: 04/10/2024] [Indexed: 04/19/2024]
Abstract
There has been increasing attention given to nickel-cobalt tailings (NCT), which pose a risk of heavy metal pollution in the field. In this study, on site tests and sampling analysis were conducted to assess the physical and chemical characteristics, heavy metal toxicity, and microbial diversity of the original NCT, solidified NCT, and the surrounding soil. The research results show that the potential heavy metal pollution species in NCT are mainly Ni, Co, Mn, and Cu. Simultaneous solidification and passivation of heavy metals in NCT were achieved, resulting in a reduction in biological toxicity and a fivefold increase in seed germination rate. The compressive strength of the original tailings was increased by 20 times after solidification. The microbial diversity test showed that the abundance of microbial community in the original NCT was low and the population was monotonous. This study demonstrates, for the first time, that the use of NCT for solidification in ponds can effectively solidification of heavy metals, reduce biological toxicity, and promote microorganism diversity in mining areas (tended to the microbial ecosystem in the surrounding soil). Indeed, this study provides a new perspective for the environmental remediation of metal tailings.
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Affiliation(s)
- Yuwei Xiang
- School of Resource and Environmental Sciences, Wuhan University, 430072, China.
| | - Jirong Lan
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China.
| | - Yiqie Dong
- School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan 430023, China.
| | - Min Zhou
- School of Resource and Environmental Sciences, Wuhan University, 430072, China
| | - Haobo Hou
- School of Resource and Environmental Sciences, Wuhan University, 430072, China.
| | - Bo-Tao Huang
- Institute of Advanced Engineering Structures, Zhejiang University, Hangzhou, China.
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Long S, Tong H, Zhang X, Jia S, Chen M, Liu C. Heavy Metal Tolerance Genes Associated With Contaminated Sediments From an E-Waste Recycling River in Southern China. Front Microbiol 2021; 12:665090. [PMID: 34054770 PMCID: PMC8155521 DOI: 10.3389/fmicb.2021.665090] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Accepted: 04/19/2021] [Indexed: 11/13/2022] Open
Abstract
Heavy metal pollution that results from electronic waste (e-waste) recycling activities has severe ecological environmental toxicity impacts on recycling areas. The distribution of heavy metals and the impact on the bacteria in these areas have received much attention. However, the diversity and composition of the microbial communities and the characteristics of heavy metal resistance genes (HMRGs) in the river sediments after long-term e-waste contamination still remain unclear. In this study, eight river sediment samples along a river in a recycling area were studied for the heavy metal concentration and the microbial community composition. The microbial community consisted of 13 phyla including Firmicutes (ranging from 10.45 to 36.63%), Proteobacteria (11.76 to 32.59%), Actinobacteria (14.81 to 27.45%), and unclassified bacteria. The abundance of Firmicutes increased along with the level of contaminants, while Actinobacteria decreased. A canonical correspondence analysis (CCA) showed that the concentration of mercury was significantly correlated with the microbial community and species distribution, which agreed with an analysis of the potential ecological risk index. Moreover, manually curated HMRGs were established, and the HMRG analysis results according to Illumina high-throughput sequencing showed that the abundance of HMRGs was positively related to the level of contamination, demonstrating a variety of resistance mechanisms to adapt, accommodate, and live under heavy metal-contaminated conditions. These findings increase the understanding of the changes in microbial communities in e-waste recycling areas and extend our knowledge of the HMRGs involved in the recovery of the ecological environment.
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Affiliation(s)
- Shengqiao Long
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, China.,College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Hui Tong
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science and Technology, Guangdong Academy of Sciences, Guangzhou, China
| | - Xuxiang Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, China
| | - Shuyu Jia
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, China
| | - Manjia Chen
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science and Technology, Guangdong Academy of Sciences, Guangzhou, China
| | - Chengshuai Liu
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, China.,National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science and Technology, Guangdong Academy of Sciences, Guangzhou, China
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Liu R, Li S, Gao X, Yu N, Zhao C, Gao C, Lv W. Single and combined impacts of nickel and cadmium on the performance, microbial community and enzymatic activity of sequencing batch reactors. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 727:138571. [PMID: 32335452 DOI: 10.1016/j.scitotenv.2020.138571] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 04/01/2020] [Accepted: 04/07/2020] [Indexed: 05/27/2023]
Abstract
The performance, microbial enzymatic activities and the microbial community of sequencing batch reactors (SBRs) were evaluated under the single and combined nickel (Ni2+) at 20 mg/L and cadmium (Cd2+) at 10 mg/L. The single and combined Ni2+ and Cd2+ had no adverse impacts on the COD removal, whereas the NH4+-N removal efficiency declined sharply from about 99% to 34.42% and 42.67% under the single Ni2+ and combined Ni2+ and Cd2+. Compared with the absence of Ni2+ or Cd2+, the specific oxygen uptake rate (SOUR), ammonia-oxidizing rate (SAOR), nitrite-oxidizing rate (SNOR), nitrite-reducing rate (SNIRR) and nitrate-reducing rate (SNRR) declined by 24.09%, 56.63%, 51.50%, 58.01% and 52.09% under the combined Ni2+ and Cd2+, which were slower than the sum of those under single Ni2+ and Cd2+. The dehydrogenase, ammonia monooxygenase, nitrite oxidoreductase, nitrate reductase and nitrite reductase activities showed the similar varying trends to the SOUR, SAOR, SNOR, SNIRR and SNRR, suggesting that the combined Ni2+ and Cd2+ displayed antagonistic inhibition on the nitrogen removal rates and microbial enzyme activities. The combined Ni2+ and Cd2+ declined the microbial diversity and richness less than the sum of those under single Ni2+ and Cd2+. The relative abundance of Nitrosomonas, Nitrospira and identified denitrifying bacteria displayed some changes under single and combined Ni2+ and Cd2+. These findings would contribute to better understand the combined impacts of multiple heavy metals on biological wastewater treatment systems.
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Affiliation(s)
- Ruicong Liu
- College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao 266100, China
| | - Shanshan Li
- College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Xueli Gao
- College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao 266100, China.
| | - Naling Yu
- College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Changkun Zhao
- College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Congjie Gao
- College of Chemistry & Chemical Engineering, Ocean University of China, Qingdao 266100, China
| | - Wenzhou Lv
- School of Civil and Environmental Engineering, Ningbo University, Ningbo 315211, China.
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Wang T, Li Z, Chen X, Long XE. Effects of nickel and cobalt on methane production and methanogen abundance and diversity in paddy soil. PeerJ 2019; 7:e6274. [PMID: 30671309 PMCID: PMC6339778 DOI: 10.7717/peerj.6274] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 12/07/2018] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Paddies are an important anthropogenic source of methane emissions to the atmosphere, and they are impacted by heavy metal pollution. Nickel (Ni) and cobalt (Co) pollution might either enhance or mitigate CH4 emission from paddy soils due to the total amounts of metals, bioavailability and functional microbial activity and composition. METHODS An incubation experiment was conducted, and different Ni and Co concentrations were added to test the effects of trace metals on methane production in paddy soil. The archaea community structure and the abundance of methanogen functional groups in the paddy soil with added Ni and Co were detected using high-throughput sequencing and quantitative PCR based on the 16S rRNA and mcrA (methyl coenzyme M reductase) genes, respectively. RESULTS The highest methane production rate was 561 mg CH4 kg-1 dry soil d-1 with the addition of 50 mg kg-1 Ni and 684 mg CH4 kg-1 dry soil d-1 with the addition of 25 mg kg-1 Co. Accordingly, the mcrA gene was most abundant in the 50 mg kg-1 Ni addition (3.1 × 106 ± 0.5 × 106 copies g-1 dry soil). The lowest mcrA gene abundance was detected in the 500 mg kg-1 Co addition (9.2× 105 ± 0.4 × 105 copies g-1 dry soil). The dominant methanogens were Methanobacterium, Methanosarcina, Methanocella, Methanomassiliicoccus, Bathyarchaeota, and Rice Cluster I (RC-I), and the relative abundances of these groups were higher than 1% in the Ni and Co treatments. Additionally, the archaeal compositions differed significantly in the soils with various Ni and Co additions. The most abundant Methanococcus spp. represented 51.3% of the composition in the 50 mg kg-1 Ni addition, which was significantly higher than that of the control (12.9% to 17.5%). DISCUSSION Our results indicated that the contamination of soil by Ni and Co significantly affected total methanogens abundance and specific methanogen functional groups. Ni and Co additions to paddy soil promoted methanogenic activity at low concentrations, while they had inhibitory effects at high concentrations. Because paddy soils largely contribute to methane emissions and are increasingly exposed to heavy metal pollution, our results show that future assessments of greenhouse gas flux from paddy soils should take into account the effects of pollution by Ni and Co.
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Affiliation(s)
- Tianwei Wang
- College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Zhaoxia Li
- College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Xueping Chen
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, China
| | - Xi-En Long
- School of Geographic Sciences, Nantong University, Nantong, Jiangsu, China
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Yan Y, Wang Y, Liu Y, Liu X, Yao C, Ma L. Effect of continuously dosing Cu(II) on pollutant removal and soluble microbial products in a sequencing batch reactor. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2015; 72:1653-1661. [PMID: 26524458 DOI: 10.2166/wst.2015.385] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The effects of synthetic wastewater that contained 20 mg/L Cu(II) on the removal of organic pollutants in a sequencing batch reactor were investigated. Results of continuous 20 mg/L Cu(II) exposure for 120 days demonstrated that the chemical oxygen demand (COD) removal efficiency decreased to 42% initially, followed by a subsequent gradual recovery, which peaked at 78% by day 97. Effluent volatile fatty acid (VFA) concentration contributed 67 to 89% of the influent COD in the experimental reactor, which indicated that the degradation of the organic substances ceased at the VFA production step. Meanwhile, the varieties of soluble microbial products (SMP) content and main components (protein, polysaccharide, and DNA) were discussed to reveal the response of activated sludge to the toxicity of 20 mg/L Cu(II). The determination of Cu(II) concentrations in extracellular polymeric substances (EPS) and SMP throughout the experiment indicated an inverse relationship between extracellular Cu(II) concentration and COD removal efficiency.
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Affiliation(s)
- YangWei Yan
- Department of Environmental Science and Engineering, Fudan University, 220 Handan Road, Shanghai 200433, China E-mail:
| | - YuWen Wang
- Department of Environmental Science and Engineering, Fudan University, 220 Handan Road, Shanghai 200433, China E-mail:
| | - Yan Liu
- Department of Environmental Science and Engineering, Fudan University, 220 Handan Road, Shanghai 200433, China E-mail:
| | - Xiang Liu
- Department of Environmental Science and Engineering, Fudan University, 220 Handan Road, Shanghai 200433, China E-mail:
| | - ChenChao Yao
- Department of Environmental Science and Engineering, Fudan University, 220 Handan Road, Shanghai 200433, China E-mail:
| | - LuMing Ma
- College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
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The History of Cupriavidus metallidurans Strains Isolated from Anthropogenic Environments. SPRINGERBRIEFS IN MOLECULAR SCIENCE 2015. [DOI: 10.1007/978-3-319-20594-6_1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Jiang R, Qi J, Wang W, Zheng H, Li X. Accumulation and fraction distribution of Ni(II) in activated sludge treating Ni-laden wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:10744-10750. [PMID: 24870284 DOI: 10.1007/s11356-014-3035-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Accepted: 05/12/2014] [Indexed: 06/03/2023]
Abstract
The accumulation and fraction distribution of Ni(II) in sludge was determined, and their effect on the performance of sequencing batch reactor (SBR) systems was evaluated at laboratory scale. The results showed that the removal efficiencies of substrates decreased significantly with increasing feeding concentration of Ni(II) into SBRs. The concentration of Ni(II) fed into the SBRs was significantly positively correlated with the Ni(II) contents accumulated in the sludge, while it was negatively correlated with the biomass in the SBRs. The accumulated Ni(II) in the sludge was distributed mainly in the available fraction, accounting for 75.8-90.0 % of the total Ni(II) content. The accumulated content of Ni(II) in each sludge fraction could be predicted satisfactorily by the feeding Ni(II) concentrations in the solutions. As compared with the total contents and other chemical fractions, Ni(II) in the oxidizable fraction in sludge exhibited more important inhibition effects on sludge microorganisms in the SBRs.
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Affiliation(s)
- Ruixue Jiang
- Water Conservancy and Civil Engineering College, Shandong Agricultural University, Daizong Road No.61, Tai'an, Shandong, 271018, People's Republic of China
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Wang W, Li X, Wang P, Song X, Jiang D, Wang K. Long-term effects of Ni(II) on the performance and activity of activated sludge processes. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2013; 92:144-149. [PMID: 23590764 DOI: 10.1016/j.ecoenv.2013.03.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2012] [Revised: 03/16/2013] [Accepted: 03/18/2013] [Indexed: 06/02/2023]
Abstract
The long-term effects of Ni(II) on substrate removal and microorganism activities were investigated by operating sequencing batch reactors (SBRs). Compared to the control system lacking Ni(II), the removal efficiencies of total organic carbon (TOC) and ammonium nitrogen (NH4(+)-N) in SBR system loading with 10mgL(-1) Ni(II) decreased drastically from 90.2±3.6 percent to 75.0±8.9 percent, and 99.2±0.6 percent to 50.8±11.5 percent, respectively. As compared to the control system, a inhibitory rate of more than 50 percent for the 2,3,5-triphenyltetrazolium chloride electron transport system (TTC-ETS) and the 2-(p-iodophenyl)-3-(p-nitrophenyl)-5-phenyltetrazolium chloride electron transport system (INT-ETS), and 43 percent for the specific oxygen uptake rate (sOUR) were detected in SBR system loading with 20mgL(-1) Ni(II). TTC-ETS, INT-ETS, and sOUR were significantly correlated with substrate removal efficiencies, suggesting that they could all serve as effective indicators of the performance of activated sludge processes. Additionally, INT-ETS is superior to sOUR and TTC-ETS in detecting the toxic effects of Ni(II) on sludge microorganism activity.
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Affiliation(s)
- Wei Wang
- Water Conservancy and Civil Engineering College, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
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Jaziri K, Casellas M, Dagot C. Comparing the effects of three pre-treatment disintegration techniques on aerobic sludge digestion: biodegradability enhancement and microbial community monitoring by PCR-DGGE. ENVIRONMENTAL TECHNOLOGY 2012; 33:1435-1444. [PMID: 22856319 DOI: 10.1080/09593330.2011.632653] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The objectives of this work were to compare and investigate the effect of three activated sludge disintegration processes before aerobic sludge digestion on 1) aerobic biodegradability enhancement and 2) microbial community evolution using the polymerase chain reaction-denaturant gel gradient electrophoresis (PCR-DGGE) technique. The comparison of three disintegration processes: thermal treatment (95 degrees C, 2h), sonication (100,000 kJ/kgTS) and ozonation (0.108 g O3/gTS) showed that the disintegration processes acted differently according to the composition of the soluble phase and to the DNA damage. Thermal treatment led to significant protein solubilization and to DNA modification. Sonication and ozonation resulted in similar soluble phase compositions and did not lead to any DNA modifications. During activated sludge aerobic digestion, intrinsic biodegradability enhancement was observed for thermal and ozone activated sludge pre-treatments. The analysis of the DGGE patterns at the end of aerobic digestion showed that population diversity was affected by both the aerobic digestion and the pre-treatment. The dissimilarity percentages measured at the end of aerobic digestion in the control sample and in the treated sludge were equal to 22, 25 and 20% for thermal treatment, sonication and ozonation respectively. This study indicated that PCR-DGGE could be a useful tool for the comparison of disintegration processes before and after aerobic digestion.
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Affiliation(s)
- Kais Jaziri
- Université de Limoges, Groupement de Recherche Eau Sol Environnement, Limoges, France.
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