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Li R, Yao J, Liu J, Sunahara G, Duran R, Xi B, El-Saadani Z. Bioindicator responses to extreme conditions: Insights into pH and bioavailable metals under acidic metal environments. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 356:120550. [PMID: 38537469 DOI: 10.1016/j.jenvman.2024.120550] [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: 01/01/2024] [Revised: 02/22/2024] [Accepted: 03/04/2024] [Indexed: 04/07/2024]
Abstract
Acid mine drainage (AMD) caused environmental risks from heavy metal pollution, requiring treatment methods such as chemical precipitation and biological treatment. Monitoring and adapting treatment processes was crucial for success, but cost-effective pollution monitoring methods were lacking. Using bioindicators measured through 16S rRNA was a promising method to assess environmental pollution. This study evaluated the effects of AMD on ecological health using the ecological risk index (RI) and the Risk Assessment Code (RAC) indices. Additionally, we also examined how acidic metal stress affected the diversity of bacteria and fungi, as well as their networks. Bioindicators were identified using linear discriminant analysis effect size (LEfSe), Partial least squares regression (PLS-R), and Spearman analyses. The study found that Cd, Cu, Pb, and As pose potential ecological risks in that order. Fungal diversity decreased by 44.88% in AMD-affected areas, more than the 33.61% decrease in bacterial diversity. Microbial diversity was positively correlated with pH (r = 0.88, p = 0.04) and negatively correlated with bioavailable metal concentrations (r = -0.59, p = 0.05). Similarly, microbial diversity was negatively correlated with bioavailable metal concentrations (bio_Cu, bio_Pb, bio_Cd) (r = 0.79, p = 0.03). Acidiferrobacter and Thermoplasmataceae were prevalent in acidic metal environments, while Puia and Chitinophagaceae were identified as biomarker species in the control area (LDA>4). Acidiferrobacter and Thermoplasmataceae were found to be pH-tolerant bioindicators with high reliability (r = 1, P < 0.05, BW > 0.1) through PLS-R and Spearman analysis. Conversely, Puia and Chitinophagaceae were pH-sensitive bioindicators, while Teratosphaeriaceae was a potential bioindicator for Cu-Zn-Cd metal pollution. This study identified bioindicator species for acid and metal pollution in AMD habitats. This study outlined the focus of biological monitoring in AMD acidic stress environments, including extreme pH, heavy metal pollutants, and indicator species. It also provided essential information for heavy metal bioremediation, such as the role of omics and the effects of organic matter on metal bioavailability.
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Affiliation(s)
- Ruofei Li
- School of Water Resource and Environment, Research Center of Environmental Science and Engineering, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, China
| | - Jun Yao
- School of Water Resource and Environment, Research Center of Environmental Science and Engineering, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, China.
| | - Jianli Liu
- School of Water Resource and Environment, Research Center of Environmental Science and Engineering, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, China
| | - Geoffrey Sunahara
- School of Water Resource and Environment, Research Center of Environmental Science and Engineering, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, China; Department of Natural Resource Sciences, McGill University, 21111 Lakeshore Drive, Ste-Anne-de-Bellevue, Quebec, H9X 3V9, Canada
| | - Robert Duran
- School of Water Resource and Environment, Research Center of Environmental Science and Engineering, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, China; Université de Pau et des Pays de l'Adour, UPPA/E2S, IPREM CNRS, 5254, Pau, France
| | - Beidou Xi
- State Key Laboratory of Environmental Criteria and Risk Assessment, State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Zozo El-Saadani
- Geology Department, Faculty of Science, Zagazig University, Zagazig, 44519, Egypt
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Qin J, Wang X, Deng M, Li H, Lin C. Red mud-biochar composites (co-pyrolyzed red mud-plant materials): Characteristics and improved efficacy on the treatment of acidic mine water and trace element-contaminated soils. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 844:157062. [PMID: 35809730 DOI: 10.1016/j.scitotenv.2022.157062] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 06/25/2022] [Accepted: 06/26/2022] [Indexed: 06/15/2023]
Abstract
The use of commercially sourced dopants for synthesizing biochar-based composites could be economically undesirable. The current work aimed to explore the possibility of making low-cost biochar-based composites using red mud (an industrial waste from alumina production) as dopants. Two types of red mud were used: one from a Bayer process and another from a sintering process. Different techniques (wet chemical, magnetic, SEM-EDS, FTIR, XPS and XRD analyses) were adopted to characterize the synthesized red mud-biochar composites, along with the pristine biochar. The composites were superior to the pristine biochar in terms of acid neutralizing capacity, specific surface area, and degree of magnetization. Two laboratory simulation experiments were conducted to assess the improved efficacy of the composites on the treatment of acidic mine water and mine water-contaminated soils. In general, application of the composites resulted in a significantly higher removal rate of mine water-borne trace elements compared to the pristine biochar treatment. The composites also had better effects on immobilizing the soil-borne trace elements and weakening the uptake of trace elements by the test vegetable plant species grown in the composite-treated soils, as compared to the pristine biochar-treated soil. By comparison, the sintering red mud-biochar composite had a generally better performance compared to the Bayer red mud-biochar composite.
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Affiliation(s)
- Junhao Qin
- College of Natural Resources and Environment, South China Agricultural University/Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture of China, Guangzhou 510642, China; Guangdong Provincial Key Laboratory of Eco-Circular Agriculture/Guangdong Engineering Research Center for Modern Eco-agriculture and Circular Agriculture, Guangzhou 510642, China
| | - Xi Wang
- College of Natural Resources and Environment, South China Agricultural University/Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture of China, Guangzhou 510642, China; Guangdong Provincial Key Laboratory of Eco-Circular Agriculture/Guangdong Engineering Research Center for Modern Eco-agriculture and Circular Agriculture, Guangzhou 510642, China
| | - Mujuan Deng
- College of Natural Resources and Environment, South China Agricultural University/Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture of China, Guangzhou 510642, China; Guangdong Provincial Key Laboratory of Eco-Circular Agriculture/Guangdong Engineering Research Center for Modern Eco-agriculture and Circular Agriculture, Guangzhou 510642, China
| | - Huashou Li
- College of Natural Resources and Environment, South China Agricultural University/Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture of China, Guangzhou 510642, China; Guangdong Provincial Key Laboratory of Eco-Circular Agriculture/Guangdong Engineering Research Center for Modern Eco-agriculture and Circular Agriculture, Guangzhou 510642, China
| | - Chuxia Lin
- Centre for Regional and Rural Futures, Faculty of Science, Engineering and Built Environment, Deakin University, Burwood, VIC 3125, Australia.
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Li X, Yang Q, Wang L, Song C, Chen L, Zhang J, Liang Y. Using Caenorhabditis elegans to assess the ecological health risks of heavy metals in soil and sediments around Dabaoshan Mine, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:16332-16345. [PMID: 34648159 DOI: 10.1007/s11356-021-16807-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Accepted: 09/24/2021] [Indexed: 06/13/2023]
Abstract
Heavy metal pollution is a global environmental problem, and the potential risks associated with heavy metals are increasing. The acid mine drainage (AMD) which is generated by mining activities at Dabaoshan Mine, the largest polymetallic mine in southern China, is harmful to local residents. A detailed regional survey of the ecological and human health risks of this polluted area is urgently needed. In this study, eight sediments and farmland samples were collected along the flow direction of tailing wastewater and Fandong Reservoir; the content of multiple heavy metals in these samples was determined by inductively coupled plasma mass spectrometry. The biological toxicity of water-soluble extracts from the samples was further assessed by referring to different endpoints of Caenorhabditis elegans (C. elegans). The relationship between specific heavy metals and biological toxicity was estimated by partial least squares regression. The results indicated that the risk of heavy metals in Dabaoshan mining area was very high (potential ecological risk index = 721.53) and was related to geographical location. In these samples, the carcinogenic risk (the probability that people are induced carcinogenic diseases or injuries when exposed to carcinogenic pollutants) of arsenic (As) for adults exceeded the standard value 1 × 10-4 and indicated that As presented a high carcinogenic risk to adults, while the high risk of non-carcinogenic effects (the hazard degree of human exposure to non-carcinogenic pollutants) in children was related to lead exposure (hazard index = 1.24). In addition, the heavy metals at high concentration in the water-soluble fraction of sediment and farmland soil extracts, which might easily distribute within the water cycle, inhibited the survival rate and growth of C. elegans. Gene expression and enzymatic activity related to oxidative stress were increased and genes related to apoptosis and metallothionein were also affected. In conclusion, the results of chemical analysis and biological assays provided evidence on the toxicity of soil and sediment extracts in the Dabaoshan mining area and advocated the control and remediation of heavy metal pollution around Dabaoshan Mine.
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Affiliation(s)
- Xin Li
- College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Qingqing Yang
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Institute of Environment and Health, Jianghan University, Wuhan, 430056, China
| | - Ling Wang
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Institute of Environment and Health, Jianghan University, Wuhan, 430056, China.
| | - Chuxin Song
- College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Lufeng Chen
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Institute of Environment and Health, Jianghan University, Wuhan, 430056, China
| | - Jie Zhang
- College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China.
| | - Yong Liang
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Institute of Environment and Health, Jianghan University, Wuhan, 430056, China
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Wenbo L, Qiyan F, Haoqian L, Di C, Xiangdong L. Passive treatment test of acid mine drainage from an abandoned coal mine in Kaili Guizhou, China. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2021; 84:1981-1996. [PMID: 34695025 DOI: 10.2166/wst.2021.405] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Discharge of acid mine drainage (AMD) from abandoned coal mines of the YuDong catchment in Kaili City, Guizhou Province, China, has severely damaged local ecological environments. In this study, a laboratory-scale dispersed alkaline substrate (DAS) was studied for the treatment of simulated AMD. The experimental conditions and reaction mechanisms were preliminarily explored. The treatment effect and variation law of vertical effluent water quality of the experimental conditions were thoroughly analysed. The results indicated that small-sized limestone (diameter 5-7 mm) having a 20:1 mixture ratio with shavings and minimum HRT of 20 hours result in increasing effluent pH from 3.5 to 6.6, achieving 66.2% and 99.1% removal of Fe and Al, respectively. There were obvious differences in each reaction layer for the removal of various pollutants from AMD along the depth by DAS, the main reaction zone was first 20-30 cm of the reaction column. The removal process of metal ions and sulfate was accompanied by bio-mineralization reaction. This test provided a valuable support for the local practical engineering applications, enriched the AMD processing technology experimental cases, and provided reference for the treatment technology of similar polluted areas.
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Affiliation(s)
- Li Wenbo
- Engineering Research Center of Ministry of Education for Mine Ecological Restoration, China University of Mining and Technology, Xuzhou 221116, China E-mail: ; School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China
| | - Feng Qiyan
- Engineering Research Center of Ministry of Education for Mine Ecological Restoration, China University of Mining and Technology, Xuzhou 221116, China E-mail: ; School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China
| | - Liang Haoqian
- Engineering Research Center of Ministry of Education for Mine Ecological Restoration, China University of Mining and Technology, Xuzhou 221116, China E-mail: ; School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China
| | - Chen Di
- Engineering Research Center of Ministry of Education for Mine Ecological Restoration, China University of Mining and Technology, Xuzhou 221116, China E-mail: ; School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China
| | - Li Xiangdong
- Engineering Research Center of Ministry of Education for Mine Ecological Restoration, China University of Mining and Technology, Xuzhou 221116, China E-mail: ; School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China
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Niu A, Lin C. Managing soils of environmental significance: A critical review. JOURNAL OF HAZARDOUS MATERIALS 2021; 417:125990. [PMID: 34229372 DOI: 10.1016/j.jhazmat.2021.125990] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 04/20/2021] [Accepted: 04/23/2021] [Indexed: 06/13/2023]
Abstract
Globally, environmentally significant soils (ESSs) mainly include acid sulfate, heavy metal(loid)-contaminated, petroleum hydrocarbon-contaminated, pesticide-contaminated, and radionuclide-contaminated soils. These soils are interrelated and have many common characteristics from an environmental management perspective. In this review, we critically evaluate the available literature on individual ESSs, aiming to identify common problems related to environmental quality/risk assessment, remediation approaches, and environmental regulation for these soils. Based on these findings, we highlight the challenges to, and possible solutions for sustainable ESS management. Contaminated land has been rapidly expanding since the first industrial revolution from the industrialized Western countries to the emerging industrialized Asia and other parts of the world. Clean-up of contaminated lands and slowdown of their expansion require concerted international efforts to develop advanced cleaner production and cost-effective soil remediation technologies in addition to improvement of environmental legislation, regulatory enforcement, financial instruments, and stakeholder involvement to create enabling environments. Two particular areas require further action and research efforts: developing a universal system for assessing ESS quality and improving the cost-effectiveness of remediation technologies. We propose an integrated framework for deriving ESS quality indicators and make suggestions for future research directions to improve the performance of soil remediation technologies.
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Affiliation(s)
- Anyi Niu
- School of Geography, South China Normal University, Guangzhou 510631, China
| | - Chuxia Lin
- Faculty of Science, Engineering and Built Environment, Deakin University, Burwood, VIC 3125, Australia.
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Qin J, Niu A, Liu Y, Lin C. Arsenic in leafy vegetable plants grown on mine water-contaminated soils: Uptake, human health risk and remedial effects of biochar. JOURNAL OF HAZARDOUS MATERIALS 2021; 402:123488. [PMID: 32738781 DOI: 10.1016/j.jhazmat.2020.123488] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 06/14/2020] [Accepted: 07/12/2020] [Indexed: 06/11/2023]
Abstract
Field investigation and microcosm experiment were conducted to examine the uptake of arsenic by vegetable plants grown on the soils contaminated by acidic mine water and evaluate the human health risk from consuming the vegetables. Plant uptake of arsenic was related to the ratio of phosphorus to arsenic in soil solution for the same vegetable species. Bioaccumulation coefficient (BAC) of arsenic was highly variable amongst the different vegetable species with water spinach (white stem) and sweet potato leaf being identified as major vegetable species with high BAC. There was a reasonably good relationship between the gastric phase-bioaccessible arsenic and the gastrointestinal phase-bioaccessible arsenic. Consumption of the vegetables grown in the investigated area poses a significantly potential human health risk with a hazard quotient (HQ) of 2.7. Application of biochar significantly inhibited the uptake of arsenic by the vegetable plant due to protonation of biochar surfaces under acidic conditions, which favoured adsorption of arsenic. The bioaccessibity of arsenic in the edible part of vegetable was also reduced due to biochar application. The HQ of the test vegetable plant (Gynura cusimbua) after soil amendment by biochar was reduced to 2 from 6 for the unamended soil.
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Affiliation(s)
- Junhao Qin
- Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture, South China Agricultural University, Guangzhou, 510642, China
| | - Anyi Niu
- School of Geography, South China Normal University, Guangzhou 510631, China
| | - Yanqing Liu
- Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture, South China Agricultural University, Guangzhou, 510642, China
| | - Chuxia Lin
- Centre for Regional and Rural Futures, Faculty of Science, Engineering and Built Environment, Deakin University, Burwood VIC 3125 Australia.
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Luo C, Routh J, Dario M, Sarkar S, Wei L, Luo D, Liu Y. Distribution and mobilization of heavy metals at an acid mine drainage affected region in South China, a post-remediation study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 724:138122. [PMID: 32408435 DOI: 10.1016/j.scitotenv.2020.138122] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 03/14/2020] [Accepted: 03/20/2020] [Indexed: 06/11/2023]
Abstract
Dabaoshan Mine Site (DMS) is the largest polymetallic mine in South China. The Hengshi River flowing next to DMS receives acid mine wastes leaching from the tailings pond and run-off from a treatment plant, which flows into the Wengjiang River. This study focuses on spatiotemporal distribution and mobilization of As, Cd, Pb, and Zn along the Hengshi River, groundwater, fluvial sediments, and soils, with a focus on As due to its high toxicity and the fact that mining is one of the main sources of contamination. Geochemical analyses (heavy metals, grain-size, X-ray diffraction, organic carbon and sulfur content) followed by geochemical modeling (PHREEQC) and statistical assessment were done to determine the physicochemical characteristics, toxicity risks, and behavior of heavy metals. Near the tailings pond, heavy metal concentrations in surface water were 2-100 times higher than the Chinese surface water standard for agriculture. Although water quality during the dry season has improved since the wastewater treatment plant started, heavy metal concentrations were high during rainy season. In groundwater, heavy metal concentrations were low and pose little risks. Soils along the Hengshi River were disturbed and they did not show any specific trends. The potential ecological risk of heavy metals was ranked as Cd > As > Cu > Pb > Zn in sediments and Cd > Cu > Pb > As > Zn in soils indicating multi-metal contamination and toxicity. As(III) was the predominant species in surface water during the dry season, whereas As(V) dominated during the rainy season. Arsenic levels in most sites exceeded the Chinese soil standard. Although As is assumed to have a moderate ecological risk in sediments and low risk in soils, anthropogenic activities, such as mining and land-use changes contribute to the release of As and other heavy metals and pose a risk for local residents.
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Affiliation(s)
- Chen Luo
- Department of Thematic Studies - Environmental Change, Linköping University, Linköping SE-58183, Sweden; Linköping University - Guangzhou University Research Center on Urban Sustainable Development, Guangzhou University, Guangzhou CN-510006, China
| | - Joyanto Routh
- Department of Thematic Studies - Environmental Change, Linköping University, Linköping SE-58183, Sweden; Linköping University - Guangzhou University Research Center on Urban Sustainable Development, Guangzhou University, Guangzhou CN-510006, China.
| | - Mårten Dario
- Department of Thematic Studies - Environmental Change, Linköping University, Linköping SE-58183, Sweden
| | - Soumyajit Sarkar
- School of Environmental Science and Engineering, Indian Institute of Technology, Kharagpur 721302, India
| | - Lezhang Wei
- Linköping University - Guangzhou University Research Center on Urban Sustainable Development, Guangzhou University, Guangzhou CN-510006, China
| | - Dinggui Luo
- Linköping University - Guangzhou University Research Center on Urban Sustainable Development, Guangzhou University, Guangzhou CN-510006, China
| | - Yu Liu
- Linköping University - Guangzhou University Research Center on Urban Sustainable Development, Guangzhou University, Guangzhou CN-510006, China
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Concentrating Mill Wastes are the Source of Pollution of Human Environment and Natural Ecosystems with Heavy Metals: A Case Study in Primorsky Krai, Russian Federation. J CHEM-NY 2020. [DOI: 10.1155/2020/6570126] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Elevated contents of hazardous elements in natural ecosystems are often associated with human activities. Significant quantities of these elements, including heavy metals, are concentrated in tailings. The goal of the study was to assess the mineralogical and geochemical features of the old tailings of the decommissioned Krasnorechenskaya concentrating mill (located in Primorsky Krai, Russian Federation), which was processing complex tin-polymetallic and silver-lead-zinc ores, the chemical features of tailings pond waters, and the extent of environmental impact on the nearby Rudnaya river. In addition to the analysis of rock and water samples, the software modeling of the water-rock-gas system was carried out. In the study area, the minerals and rocks undergo changes that lead to the formation of highly mineralized, acidic waters saturated with various elements. In the tailings ponds, the maximum permissible concentrations were exceeded for Zn, Cd, Cu, Mg, Fetotal, Pb, Mn, Al, As, Co, Be, Sr, Ni, and Ba. The drainage from the tailings pond tripled the total mineralization of the Rudnaya river relative to the background values. However, the intoxication of the ecosystem by tailing products is partially inhibited by the secondary minerals in the tailings ponds. The negative impact is of a local nature, and 500 m downstream the concentration of many of the above elements is reduced. Despite this, the system that forms the chemical composition of highly mineralized waters is far from the equilibrium state. The oxidation of sulfides, dissolution of other minerals, and migration of oxidation and hydrolysis products will continue affecting the environment. In this regard, it is necessary to conduct environmental monitoring and undertake activities aimed at the recovery of mature concentration tailings or at suppressing the activity of hazardous elements by the conservation of tailings ponds.
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Transcriptome Analysis of the Acid Stress Response of Desulfovibrio vulgaris ATCC 7757. Curr Microbiol 2020; 77:2702-2712. [DOI: 10.1007/s00284-020-02051-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 05/23/2020] [Indexed: 01/23/2023]
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Gao J, Zou C, Li W, Ni Y, Liao F, Yao L, Sui J, Vengosh A. Hydrochemistry of flowback water from Changning shale gas field and associated shallow groundwater in Southern Sichuan Basin, China: Implications for the possible impact of shale gas development on groundwater quality. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 713:136591. [PMID: 31955095 DOI: 10.1016/j.scitotenv.2020.136591] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 01/04/2020] [Accepted: 01/07/2020] [Indexed: 06/10/2023]
Abstract
The worldwide expansion of shale gas production and increased use of hydraulic fracturing have raised public concerns about safety and risks of groundwater resources in shale gas extraction areas. China has the largest shale gas resources in the world, most of which are located in the Sichuan Basin. Shale gas extraction in the Sichuan Basin has been increasing rapidly in recent years. However, the potential impact on shallow groundwater quality has not yet been systematically investigated. In order to evaluate the possible impact of shale gas extraction on groundwater quality, we present, for the first time, the hydrochemistry and Sr isotopic data of shallow groundwater, as well as flowback and produced water (FP water) in the Changning shale gas field in Sichuan Basin, one of the major shale gas fields in China. The Changning FP water is characterized by high salinity (TDS of 13,100-53,500 mg/L), Br/Cl (2.76 × 10-3) and 87Sr/86Sr (0.71849), which are distinguished from the produced waters from nearby conventional gas fields with higher Br/Cl (4.5 × 10-3) and lower 87Sr/86Sr (0.70830-0.71235). The shallow groundwater samples were collected from a Triassic karst aquifer in both active and nonactive shale gas extraction areas. They are dominated by low salinity (TDS of 145-1100 mg/L), Ca-HCO3 and Ca-Mg-HCO3 types water, which are common in carbonate karst aquifers. No statistical difference of the groundwater quality was observed between samples collected in active versus nonactive shale gas extraction areas. Out of 66 analyzed groundwater, three groundwater samples showed relatively higher salinity above the background level, with low 87Sr/86Sr (0.70824-0.7110) and Br/Cl (0.5-1.8 × 10-3) ratios relatively to FP water, excluding the possibility of contamination from FP water. None of the groundwater samples had detected volatile organic compounds (VOCs). The integration of geochemical and statistical analysis shows no direct evidence of groundwater contamination caused by shale gas development.
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Affiliation(s)
- Jinliang Gao
- PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China
| | - Caineng Zou
- PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China
| | - Wei Li
- PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China
| | - Yunyan Ni
- PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China.
| | - Fengrong Liao
- PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China
| | - Limiao Yao
- PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China
| | - Jianli Sui
- Institute of Geology, China Earthquake Administration, Beijing, 100029
| | - Avner Vengosh
- Nicholas School of the Environment, Duke University, Durham, NC 27708, United States.
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Yan B, Xu DM, Chen T, Yan ZA, Li LL, Wang MH. Leachability characteristic of heavy metals and associated health risk study in typical copper mining-impacted sediments. CHEMOSPHERE 2020; 239:124748. [PMID: 31520971 DOI: 10.1016/j.chemosphere.2019.124748] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 08/26/2019] [Accepted: 09/03/2019] [Indexed: 06/10/2023]
Abstract
A total of 100 samples were collected from the sediments of a typical copper mining area, south China. Leaching concentrations of selected heavy metals (Ni, Cd, Cu, Pb, Zn, Ba, As, and Hg) were measured to evaluate their distribution patterns and associated health risk. Leaching concentrations of Cu (3.58 ± 1.49 mg/L), Pb (1.50 ± 1.06 mg/L), and Zn (4.04 ± 1.68 mg/L) were significantly higher than the other metals in the samples. By evaluating the spatial heterogeneity, it was found that leaching metal concentrations did not decrease with environmental gradients, mostly caused by diverse distribution in pollution sources. The hazard index and carcinogenic risk indices showed significant risks of human exposure. For public safety, priority governance should be given to the main pollutants (Cd, Cu, Pb, Zn, and As) in sediments. In future studies, the integrated data will be urgently required for local stakeholders to conduct environmental monitoring and remediation scenarios.
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Affiliation(s)
- Bo Yan
- The Environmental Research Institute, MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, PR China; State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, PR China.
| | - Da-Mao Xu
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, PR China
| | - Tao Chen
- The Environmental Research Institute, MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, PR China
| | - Zi-Ang Yan
- School of Chemical Engineering and Light Industry, Guangdong University of Technology y, Guangzhou, 510006, PR China
| | - Li-Li Li
- College of Environmental Science and Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, 510640, PR China
| | - Ming-Hui Wang
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, PR China
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Recovery of Metals from Acid Mine Drainage by Bioelectrochemical System Inoculated with a Novel Exoelectrogen, Pseudomonas sp. E8. Microorganisms 2019; 8:microorganisms8010041. [PMID: 31878294 PMCID: PMC7023207 DOI: 10.3390/microorganisms8010041] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 12/19/2019] [Accepted: 12/20/2019] [Indexed: 01/03/2023] Open
Abstract
Acid mine drainage (AMD) is a typical source of environmental pollution ascribing to its characteristics of high acidity and heavy metal content. Currently, most strategies for AMD treatment merely focus on metal removal rather than metal recovery. However, bioelectrochemical system (BES) is a promising technology to simultaneously remove and recover metal ions from AMD. In this study, both cupric ion and cadmium ion in simulated AMD were effectively recovered by BES inoculated with a novel exoelectrogen, Pseudomonas sp. E8, that was first isolated from the anodic electroactive biofilm of a microbial fuel cell (MFC) in this study. Pseudomonas sp. E8 is a facultative anaerobic bacterium with a rod shape, 0.43–0.47 μm wide, and 1.10–1.30 μm long. Pseudomonas sp. E8 can agglomerate on the anode surface to form a biofilm in the single-chamber MFC using diluted Luria-Bertani (LB) medium as an energy substrate. A single-chamber MFC containing the electroactive Pseudomonas sp. E8 biofilms has a maximum output voltage of 191 mV and a maximum power density of 70.40 mW/m2, which is much higher than those obtained by most other exoelectrogenic strains in the genus of Pseudomonas. Almost all the Cu2+ (99.95% ± 0.09%) and Cd2+ (99.86% ± 0.04%) in simulated AMD were selectively recovered by a microbial fuel cell (MFC) and a microbial electrolysis cell (MEC). After the treatment with BES, the high concentrations of Cu2+(184.78 mg/L), Cd2+(132.25 mg/L), and total iron (49.87 mg/L) in simulated AMD were decreased to 0.02, 0.19, and 0 mg/L, respectively. Scanning electron micrograph (SEM), energy dispersive X-ray spectrometry (EDXS) and X-ray diffraction (XRD) analysis indicate that the Cu2+ and Cd2+ in simulated AMD were selectively recovered by microbial electrochemical reduction as Cu0 (together with trace amounts of Cu2O) or Cd0 on the cathode surface. Collectively, data suggest that Pseudomonas sp. E8 has great potential for AMD treatment and metal recovery.
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Wang Y, Dong R, Zhou Y, Luo X. Characteristics of groundwater discharge to river and related heavy metal transportation in a mountain mining area of Dabaoshan, Southern China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 679:346-358. [PMID: 31085414 DOI: 10.1016/j.scitotenv.2019.04.273] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 04/17/2019] [Accepted: 04/17/2019] [Indexed: 06/09/2023]
Abstract
Groundwater discharge to river and the related heavy metal transportation were estimated for Dabaoshan, a mountain mining area where extensive mining activities had been conducted over 40 years. In the lower reach of the mining area, shallow aquifers were contaminated by varies heavy metals due to the discharge of acid mine drainage. Polluted aquifers act as long-term pollution sources to the surrounding gaining rivers, even after the mining activities were stopped. The natural tracer 222Rn was measured for river water of the Hengshi River and groundwater adjacent to the river channel in both wet and dry seasons. The total groundwater discharge rate was estimated to be 17.4-26.7 × 103 m3 day-1 in wet season and 1.9-2.1 × 103 m3 day-1 in dry season; and the river recharge was 5.6 ± 1.0 × 103 m3 day-1 in wet season and 2.1 ± 1.0 × 103 m3 day-1 in dry season. Compared with other mining and natural/artificial factor influenced areas, groundwater discharge rate in Dabaoshan was much lower, but the magnitudes of groundwater-borne Cu, Zn, Mn and Co fluxes were comparable or even much higher. This suggested that groundwater-derived heavy metal fluxes were significant pollution sources to river in the mountain mining area. Meanwhile, the results also suggested that concentrations of Cd, Pb, Cu, Ni, Mn, Fe, Zn and Tl in groundwater increased where the recharge of river water to groundwater occurred, suggesting the recharge of river water can affect heavy metal concentrations of the beneath aquifers, even in a gaining river.
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Affiliation(s)
- Ya Wang
- School of Earth Sciences and Engineering, Sun Yat-sen University, Guangzhou 510275, PR China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, PR China; Guangdong Provincial Key Laboratory of Geological Processes and Mineral Resource Survey, Guangzhou 510275, PR China.
| | - Rong Dong
- School of Earth Sciences and Engineering, Sun Yat-sen University, Guangzhou 510275, PR China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, PR China; Guangdong Provincial Key Laboratory of Geological Processes and Mineral Resource Survey, Guangzhou 510275, PR China
| | - Yongzhang Zhou
- School of Earth Sciences and Engineering, Sun Yat-sen University, Guangzhou 510275, PR China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, PR China; Guangdong Provincial Key Laboratory of Geological Processes and Mineral Resource Survey, Guangzhou 510275, PR China
| | - Xin Luo
- Department of Earth Sciences, The University of Hong Kong, Hong Kong, China; The University of Hong Kong, Shenzhen Research Institute (SRI), Shenzhen, PR China
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14
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Wen J, Tang C, Cao Y, Li X, Chen Q. Assessment of trace metals in an aquifer with river-groundwater interaction: The influence of colloidal redistribution and porous matrix change on the migration of metals. CHEMOSPHERE 2019; 223:588-598. [PMID: 30797168 DOI: 10.1016/j.chemosphere.2019.01.184] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 01/27/2019] [Accepted: 01/30/2019] [Indexed: 06/09/2023]
Abstract
An aquifer where receives steady lateral recharge from an AMD-polluted river, was chosen to understand the profound influence of the "solid-liquid phase" evolution on the mobility of trace metals. The results showed that the accumulation of trace metals in groundwater was observed near the riparian zone. Zn and Cd almost remained in the "truly dissolved" phase (<3 kDa), whereas Cu and Pb were mainly in the coarse colloid (0.22 μm-30 kDa) and shifted from the coarse colloid to the "truly dissolved" phase along the flow path. The evolution of relatively high dispersive colloids to low dispersive colloids indicated that the Al-rich mineral colloids as the dominance migrated with the groundwater flow path, and flocculated gradually so that the porous matrix was coated by gibbsite. The coating of gibbsite dissociates OH- in acidic environment, resulting in the decreasing negative charge in porous matrix. Thus, the mobility of Cu and Pb was shifted from the colloid-facilitated transport to the co-precipitation with colloids, whereas the mobility of Zn and Cd was changed from the high electrostatic binding to the low electrostatic binding. Numerical simulation also confirmed the varying retardation factor and the total penetration time followed an order of Pb > Cu > Zn > Cd. Therefore, the changes in "two phases" in the aquifer-not only in water phase but also in colloid phase and porous matrix-have a profound influence on metal migration that take place in shallow groundwater where there are close hydraulic connection between river and groundwater.
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Affiliation(s)
- Jing Wen
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, 510006, People's Republic of China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou, 510006, People's Republic of China
| | - Changyuan Tang
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, 510006, People's Republic of China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou, 510006, People's Republic of China; School of Geography and Planning, Sun Yat-Sen University, Guangzhou, 510000, People's Republic of China
| | - Yingjie Cao
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, 510006, People's Republic of China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou, 510006, People's Republic of China.
| | - Xing Li
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, 510006, People's Republic of China
| | - Qian Chen
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, 510006, People's Republic of China
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15
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Naidu G, Ryu S, Thiruvenkatachari R, Choi Y, Jeong S, Vigneswaran S. A critical review on remediation, reuse, and resource recovery from acid mine drainage. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 247:1110-1124. [PMID: 30823340 DOI: 10.1016/j.envpol.2019.01.085] [Citation(s) in RCA: 150] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 01/06/2019] [Accepted: 01/17/2019] [Indexed: 05/28/2023]
Abstract
Acid mine drainage (AMD) is a global environmental issue. Conventionally, a number of active and passive remediation approaches are applied to treat and manage AMD. Case studies on remediation approaches applied in actual mining sites such as lime neutralization, bioremediation, wetlands and permeable reactive barriers provide an outlook on actual long-term implications of AMD remediation. Hence, in spite of available remediation approaches, AMD treatment remains a challenge. The need for sustainable AMD treatment approaches has led to much focus on water reuse and resource recovery. This review underscores (i) characteristics and implication of AMD, (ii) remediation approaches in mining sites, (iii) alternative treatment technologies for water reuse, and (iv) resource recovery. Specifically, the role of membrane processes and alternative treatment technologies to produce water for reuse from AMD is highlighted. Although membrane processes are favorable for water reuse, they cannot achieve resource recovery, specifically selective valuable metal recovery. The approach of integrated membrane and conventional treatment processes are especially promising for attaining both water reuse and recovery of resources such as sulfuric acid, metals and rare earth elements. Overall, this review provides insights in establishing reuse and resource recovery as the holistic approach towards sustainable AMD treatment. Finally, integrated technologies that deserve in depth future exploration is highlighted.
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Affiliation(s)
- Gayathri Naidu
- Faculty of Engineering, University of Technology Sydney (UTS), P.O. Box 123, Broadway, NSW, 2007, Australia
| | - Seongchul Ryu
- Faculty of Engineering, University of Technology Sydney (UTS), P.O. Box 123, Broadway, NSW, 2007, Australia
| | - Ramesh Thiruvenkatachari
- Commonwealth Scientific and Industrial Research Organisation (CSIRO), 1 Technology Court, Pullenvale, Queensland, 4069, Australia
| | - Youngkwon Choi
- Faculty of Engineering, University of Technology Sydney (UTS), P.O. Box 123, Broadway, NSW, 2007, Australia
| | - Sanghyun Jeong
- Graduate School of Water Resources, Sungkyunkwan University (SKKU), 2066 Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do, 16419, Republic of Korea
| | - Saravanamuthu Vigneswaran
- Faculty of Engineering, University of Technology Sydney (UTS), P.O. Box 123, Broadway, NSW, 2007, Australia.
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Mahmoud ME, Osman MM, Yakout AA, Abdelfattah AM. Green nanosilica@folic Acid (VB9) nanocomposite for engineered adsorptive water remediation of bivalent lead, cadmium and copper. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2018.12.055] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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17
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Zhang X, Tang S, Wang M, Sun W, Xie Y, Peng H, Zhong A, Liu H, Zhang X, Yu H, Giesy JP, Hecker M. Acid mine drainage affects the diversity and metal resistance gene profile of sediment bacterial community along a river. CHEMOSPHERE 2019; 217:790-799. [PMID: 30453276 DOI: 10.1016/j.chemosphere.2018.10.210] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 10/28/2018] [Accepted: 10/29/2018] [Indexed: 05/19/2023]
Abstract
Acid mine drainage (AMD) is one of the most hazardous byproducts of some types of mining. However, research on how AMD affects the bacterial community structure of downstream riverine ecosystems and the distribution of metal resistance genes (MRGs) along pollution gradient is limited. Comprehensive geochemical and high-throughput next-generation sequencing analyses can be integrated to characterize spatial distributions and MRG profiles of sediment bacteria communities along the AMD-contaminated Hengshi River. We found that (1) diversities of bacterial communities significantly and gradually increased along the river with decreasing contamination, suggesting community composition reflected changes in geochemical conditions; (2) relative abundances of phyla Proteobacteria and genus Halomonas and Planococcaceae that function in metal reduction decreased along the AMD gradient; (3) low levels of sediment salinity, sulfate, aquatic lead (Pb), and cadmium (Cd) were negatively correlated with bacterial diversity despite pH was in a positive manner with diversity; and (4) arsenic (As) and copper (Cu) resistance genes corresponded to sediment concentrations of As and Cu, respectively. Altogether, our findings offer initial insight into the distribution patterns of sediment bacterial community structure, diversity and MRGs along a lotic ecosystem contaminated by AMD, and the factors that affect them.
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Affiliation(s)
- Xiaohui Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China; Jiangsu Key Laboratory of Environmental Safety and Health Risk of Chemicals, Nanjing, Jiangsu 210023, China; Research Center for Environmental Toxicology & Safety of Chemicals, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Song Tang
- National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China; Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China; School of Environment and Sustainability, University of Saskatchewan, Saskatoon, SK S7N 5C3, Canada.
| | - Mao Wang
- School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong 510080, China.
| | - Weimin Sun
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science & Technology, Guangzhou 510650, China
| | - Yuwei Xie
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China; Toxicology Centre, University of Saskatchewan, Saskatoon, SK S7N 5B3, Canada
| | - Hui Peng
- Department of Chemistry and School of the Environment, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Aimin Zhong
- The Centre for Disease Control and Prevention of Wengyuan County, Shaoguan, Guangdong 512600, China
| | - Hongling Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China; Jiangsu Key Laboratory of Environmental Safety and Health Risk of Chemicals, Nanjing, Jiangsu 210023, China; Research Center for Environmental Toxicology & Safety of Chemicals, Nanjing University, Nanjing, Jiangsu 210023, China.
| | - Xiaowei Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China; Jiangsu Key Laboratory of Environmental Safety and Health Risk of Chemicals, Nanjing, Jiangsu 210023, China; Research Center for Environmental Toxicology & Safety of Chemicals, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Hongxia Yu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China; Jiangsu Key Laboratory of Environmental Safety and Health Risk of Chemicals, Nanjing, Jiangsu 210023, China; Research Center for Environmental Toxicology & Safety of Chemicals, Nanjing University, Nanjing, Jiangsu 210023, China
| | - John P Giesy
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China; Toxicology Centre, University of Saskatchewan, Saskatoon, SK S7N 5B3, Canada
| | - Markus Hecker
- School of Environment and Sustainability, University of Saskatchewan, Saskatoon, SK S7N 5C3, Canada; Toxicology Centre, University of Saskatchewan, Saskatoon, SK S7N 5B3, Canada
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18
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Wang N, Fang D, Zheng G, Liang J, Zhou L. A novel approach coupling ferrous iron bio-oxidation and ferric iron chemo-reduction to promote biomineralization in simulated acidic mine drainage. RSC Adv 2019; 9:5083-5090. [PMID: 35514646 PMCID: PMC9060654 DOI: 10.1039/c8ra09887e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Accepted: 01/24/2019] [Indexed: 12/03/2022] Open
Abstract
A novel Acidithiobacillus ferrooxidans-mediated approach coupling biological oxidation and chemical reduction for treating acid mine drainage (AMD) was investigated. The results showed that controlled addition of zero valent iron (ZVI) into the coupling system did not exhibit a significant adverse influence on the bacterial activity of Acidithiobacillus ferrooxidans but markedly increased the formation of secondary Fe-minerals. Nutrition did not affect the efficiency of coupling process, except for the bacteria density of A. ferrooxidans. 2 days cyclic treatment performed better than that of 4 and 8 days. After 14 cycles of the coupling process, 89.4% of total iron (2.23 g L−1) was transferred into Fe-minerals finally. In addition, the combined system was highly effective in removing sulfate (63%) from a simulated AMD that contained soluble Cu, Zn, Al, and Mn. Valuable iron-sulfate material e.g. schwertmannite was formed with little co-precipitation of other metals. Therefore, the integration of A. ferrooxidans into the reduction by ZVI may have considerable potential in the enhancement of biomineralization efficiency, which may further decrease soluble TFe and sulfate loads in AMD before lime neutralization. Controlled addition of ZVI into Acidithiobacillus ferrooxidans-mediated biomineralization can markedly improve the formation of secondary Fe-minerals in AMD.![]()
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Affiliation(s)
- Ning Wang
- College of Resources and Environmental Sciences
- Nanjing Agricultural University
- Nanjing 210095
- P. R. China
| | - Di Fang
- College of Resources and Environmental Sciences
- Nanjing Agricultural University
- Nanjing 210095
- P. R. China
| | - Guanyu Zheng
- College of Resources and Environmental Sciences
- Nanjing Agricultural University
- Nanjing 210095
- P. R. China
| | - Jianru Liang
- College of Resources and Environmental Sciences
- Nanjing Agricultural University
- Nanjing 210095
- P. R. China
| | - Lixiang Zhou
- College of Resources and Environmental Sciences
- Nanjing Agricultural University
- Nanjing 210095
- P. R. China
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Liu Q, Chen B, Haderlein S, Gopalakrishnan G, Zhou Y. Characteristics and environmental response of secondary minerals in AMD from Dabaoshan Mine, South China. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 155:50-58. [PMID: 29501982 DOI: 10.1016/j.ecoenv.2018.02.017] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2017] [Revised: 02/01/2018] [Accepted: 02/02/2018] [Indexed: 06/08/2023]
Abstract
This article documents the new precipitates formed related to acid mine drainage (AMD) at Dabaoshan mine (South China). X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscope & Energy Spectrometer (SEM-EDS) have been used to detect minerals in AMD impoundment and downstream creeks. The occurrences, the mineralogical species and the micro-morphological characteristics of secondary minerals from different pH conditions has been carried out. Iron- hydroxysulfates and iron-oxyhydroxides are the main secondary minerals, and they occurred as both poorly and well-crystalline minerals. Jarosite nearly predominate as pseudocubic crystals at pH 2.5-4.0. Schwertmannite-rich sediments occurred at pH 3.82-4.5 as urchin-like, pin-cushion and as well as globular-like aggregates and show high concentrations of Mn, Cu, Pb and As due to adsorption and co-precipitation. Goethite formed mainly as botryoidal and flaky assemblages. Paragenesis of different types of schwertmannite indicate that pH condition is not the dominant factor controlling morphology but the main parameter for the variation of minerals species. Statistical analysis reveal obvious changing tendency in Zn, Cd and SO4 within pH. FTIR analysis show adsorption of Cu, Pb, Zn and As on secondary iron minerals. Water elements with high concentrations in the impoundment and the obvious decrease in downstream creak reflected an accumulation and evaporation in AMD impoundment and a dilution in downstream area respectively. These results indicate that secondary minerals associated with AMD can play an important role in attenuating toxic elements.
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Affiliation(s)
- Qiyuan Liu
- School of Earth Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China; Center for Applied Geosciences (ZAG), Eberhard Karls Universität Tübingen, Hölderlinstr. 12, D-72074 Tübingen, Germany; Guangdong Provincial Key Laboratory of Geological Processes and Mineral Resource Exploration, Guangzhou 510275, China.
| | - Binghui Chen
- School of Earth Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China; Guangdong Provincial Key Laboratory of Geological Processes and Mineral Resource Exploration, Guangzhou 510275, China.
| | - Stefan Haderlein
- Guangdong Provincial Key Laboratory of Geological Processes and Mineral Resource Exploration, Guangzhou 510275, China
| | - Gnanachandrasamy Gopalakrishnan
- School of Earth Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China; Guangdong Provincial Key Laboratory of Geological Processes and Mineral Resource Exploration, Guangzhou 510275, China.
| | - Yongzhang Zhou
- School of Earth Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China; Guangdong Provincial Key Laboratory of Geological Processes and Mineral Resource Exploration, Guangzhou 510275, China
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20
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Ferrari CR, do Nascimento HDAF, Rodgher S, Almeida T, Bruschi AL, Nascimento MRLD, Bonifácio RL. Effects of the discharge of uranium mining effluents on the water quality of the reservoir: an integrative chemical and ecotoxicological assessment. Sci Rep 2017; 7:13919. [PMID: 29066833 PMCID: PMC5655341 DOI: 10.1038/s41598-017-14100-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 10/05/2017] [Indexed: 11/09/2022] Open
Abstract
The water quality of the Antas reservoir, under the influence of treated effluents from a uranium mining area Ore Treatment Unit (UTM) with acid mine drainage, was investigated. Samples were collected every 3 months from the Antas reservoir (CAB, P41-E and P14) and from the UTM (P41-S). Chemical and acute 48 h toxicity tests using Ceriodaphnia silvestrii and Daphnia magna analyses were carried out to determine the potential environmental risks due to discharging the uranium mine effluents into this reservoir. All the water samples taken from the treated effluent (P41-S) were positively correlated with elevated concentrations of uranium, manganese, aluminum, zinc and fluoride and with high electrical conductivity and pH values, being considered toxic. In November 2014 water samples taken from the reservoir showed chemical concentrations above the legislation limits for fluoride (4.5 mg L-1) uranium (0.082 mg L-1), sulfate (662.4 mg L-1), manganese (1.125 mg L-1) and aluminum (1.55 mg L-1), and in July 2015 for fluoride (2.55 mg L-1), uranium (0.01 mg L-1) and manganese (0.36 mg L-1). The extremely high average value for hardness (543.55 mg L-1) possibly reduced the toxicity potential of this chemical species mixture with respect to the bioindicators. The influence of the variation in water hardness on the toxicity of the cladocerans was discussed.
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Affiliation(s)
- Carla Rolim Ferrari
- Radioecology Laboratory, Poços de Caldas Laboratory, ‖ Brazilian Nuclear Energy Commission, Rodovia Poços de Caldas/Andradas km 13, Poços de Caldas, MG, 37719-005, Brazil.
| | - Heliana de Azevedo Franco do Nascimento
- Radioecology Laboratory, Poços de Caldas Laboratory, ‖ Brazilian Nuclear Energy Commission, Rodovia Poços de Caldas/Andradas km 13, Poços de Caldas, MG, 37719-005, Brazil
| | - Suzelei Rodgher
- São Paulo State University (UNESP). Institute of Science and Technology, São José dos Campos. Rodovia Presidente Dutra, Km 137, 8 Eugenio de Melo, São José dos Campos SP, 12247-004, Brazil
| | - Tito Almeida
- Community Ecology Laboratory, University of Vale do Itajaí, Rua Uruguay, 458, Itajaí, SC, 88302-202, Brazil
| | - Armando Luiz Bruschi
- Radioecology Laboratory, Poços de Caldas Laboratory, ‖ Brazilian Nuclear Energy Commission, Rodovia Poços de Caldas/Andradas km 13, Poços de Caldas, MG, 37719-005, Brazil
| | - Marcos Roberto Lopes do Nascimento
- Chemical Analyses Laboratory, Poços de Caldas Laboratory, Brazilian Nuclear Energy Commission, Rodovia Poços de Caldas/Andradas km 13, Poços de Caldas, MG, 37719-005, Brazil
| | - Rodrigo Leandro Bonifácio
- Chemical Analyses Laboratory, Poços de Caldas Laboratory, Brazilian Nuclear Energy Commission, Rodovia Poços de Caldas/Andradas km 13, Poços de Caldas, MG, 37719-005, Brazil
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Liao J, Ru X, Xie B, Zhang W, Wu H, Wu C, Wei C. Multi-phase distribution and comprehensive ecological risk assessment of heavy metal pollutants in a river affected by acid mine drainage. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2017; 141:75-84. [PMID: 28319862 DOI: 10.1016/j.ecoenv.2017.03.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2016] [Revised: 12/14/2016] [Accepted: 03/07/2017] [Indexed: 06/06/2023]
Abstract
To date, there is a lack of a comprehensive research on heavy metals detection and ecological risk assessment in river water, sediments, pore water (PW) and suspended solids (SS). Here, the concentrations of heavy metals, including Cu, Zn, Mn, Cd, Pb and As, and their distribution between the four phases was studied. Samples for analysis were taken from twelve sites of the Hengshi River, Guangdong Province, China, during the rainy and dry seasons. A new comprehensive ecological risk index (CERI) based on considering metal contents, pollution indices, toxicity coefficients and water categories is offered for prediction of potential risk on aquatic organisms. The results of comprehensive analysis showed that the highest concentrations of Cu, Zn and Mn of 6.42, 87.17 and 98.74mg/L, respectively, in PW were comparable with those in water, while concentrations of Cd, Pb and As of 609.5, 2757 and 96.38μg/L, respectively, were 2-5 times higher. The sum of the exchangeable and carbonate fractions of target metals in sediments followed the order of Cd > Mn > Zn > Pb > Cu > As. The distribution of heavy metals in phases followed the order of sediment > SS > water > PW, having the sum content in water and PW lower than 2% of total. The elevated ecological risk for a single metal and the phase were 34,585 for Cd and 1160 for water, respectively, implied Cd as a priority pollutant in the considered area. According to the CERI, the maximum risk value of 769.3 was smaller than 1160 in water, but higher than those in other phases. Out of considering the water categories and contribution coefficients, the CERI was proved to be more reliable for assessing the pollution of rivers with heavy metals. These results imply that the CERI has a potential of adequate assessment of multi-phase composite metals pollution.
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Affiliation(s)
- Jianbo Liao
- 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, PR China
| | - Xuan Ru
- 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, PR China
| | - Binbin Xie
- 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, PR China
| | - Wanhui Zhang
- Guangzhou Municipal Engineering Group Co., Ltd., Guangzhou 510060, PR China
| | - Haizhen Wu
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, PR China
| | - Chaofei Wu
- 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, PR China
| | - Chaohai Wei
- 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, PR China.
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Xia D, Ye H, Xie Y, Yang C, Chen M, Dang Z, Yi X, Lu G. Isotope geochemistry, hydrochemistry, and mineralogy of a river affected by acid mine drainage in a mining area, South China. RSC Adv 2017. [DOI: 10.1039/c7ra07809a] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This work utilized stable isotopes to evaluate the processes that affect the sulfate content in the waters of an AMD-affected river.
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Affiliation(s)
- Di Xia
- School of Environment and Energy
- South China University of Technology
- Guangzhou 510006
- China
| | - Han Ye
- School of Environment and Energy
- South China University of Technology
- Guangzhou 510006
- China
| | - Yingying Xie
- School of Environment and Energy
- South China University of Technology
- Guangzhou 510006
- China
| | - Chengfang Yang
- School of Environment and Energy
- South China University of Technology
- Guangzhou 510006
- China
| | - Meiqin Chen
- School of Environmental and Biological Engineering
- Guangdong University of Petrochemical Technology
- Maoming 525000
- China
| | - Zhi Dang
- School of Environment and Energy
- South China University of Technology
- Guangzhou 510006
- China
- The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters
| | - Xiaoyun Yi
- School of Environment and Energy
- South China University of Technology
- Guangzhou 510006
- China
- The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters
| | - Guining Lu
- School of Environment and Energy
- South China University of Technology
- Guangzhou 510006
- China
- Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal
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23
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Sağlam ES, Akçay M. Chemical and mineralogical changes of waste and tailings from the Murgul Cu deposit (Artvin, NE Turkey): implications for occurrence of acid mine drainage. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:6584-6607. [PMID: 26637995 DOI: 10.1007/s11356-015-5835-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 11/18/2015] [Indexed: 06/05/2023]
Abstract
Being one of the largest copper-producing resources in Turkey, the Murgul deposit has been a source of environmental pollution for very long time. Operated through four open pits with an annual production of about 3 million tons of ore at an average grade of about 0.5% Cu, the deposit to date has produced an enormous pile of waste (exceeding 100 million tons) with tailings composed of 36 % SiO2, 39% Fe2O3 and 32% S, mainly in the form of pyrite and quartz. Waters in the vicinity of the deposit vary from high acid-acid (2.71-3.85) and high-extremely metal rich (34.48-348.12 mg/l in total) in the open pits to near neutral (6.51-7.83) and low metal (14.39-973.52 μg/l in total) in downstream environments. Despite low metal contents and near neutral pH levels of the latter, their suspended particle loads are extremely high and composed mainly of quartz and clay minerals with highly elevated levels of Fe (3.5 to 24.5% Fe2O3; 11% on average) and S (0.5 to 20.6% S; 7% on average), showing that Fe is mainly in the form of pyrite and lesser hematite. They also contain high concentrations of As, Au, Ba, Cu, Pb, and Zn. Waters collected along the course of polluted drainages are supersaturated with respect to Fe phases such as goethite, hematite, maghemite, magnetite, schwertmannite and ferrihydrite. Secondary phases such as Fe-sulphates are only found near the pits, but not along the streams due to neutral pH conditions, where pebbles are covered and cemented by Fe-oxides and hydroxides indicating that oxidation of pyrite has taken place especially at times of low water load. It follows, then, that the pyrite-rich sediment load of streams fed by the waste of the Murgul deposit is currently a big threat to the aquatic life and environment and will continue to be so even after the closure of the deposit. In fact, the oxidation will be enhanced and acidity increased due to natural conditions, which necessitates strong remedial actions to be taken.
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Affiliation(s)
- Emine Selva Sağlam
- Department of Geological Engineering, Karadeniz Technical University, TR-61080, Trabzon, Turkey.
| | - Miğraç Akçay
- Department of Geological Engineering, Karadeniz Technical University, TR-61080, Trabzon, Turkey
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Liao J, Wen Z, Ru X, Chen J, Wu H, Wei C. Distribution and migration of heavy metals in soil and crops affected by acid mine drainage: Public health implications in Guangdong Province, China. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2016; 124:460-469. [PMID: 26629658 DOI: 10.1016/j.ecoenv.2015.11.023] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 11/16/2015] [Accepted: 11/19/2015] [Indexed: 05/07/2023]
Abstract
Acid mine drainages (AMD) contain high concentrations of heavy metals, and their discharges into streams and rivers constitute serious environmental problems. This article examines the effects of AMD on soil, plant and human health at Dabaoshan mine in Guangdong Province, China. Although the large scale mining was stopped in 2011, the heavy metal pollution in soil continues to endanger crops and human health in that region. The objectives of this study were to elucidate distribution and migration of Cd, Cu, Zn, As and Pb and associated health implications to local inhabitants. We collected and analyzed 74 crop samples including 28 sugarcane, 30 vegetables, 16 paddy rice and the corresponding soil samples, used correlation and linear relationship for transformation process analysis, and applied carcinogenic and non-carcinogenic risk for hazard evaluation. Results showed that the local soils were heavily polluted with Cd, Cu and As (especially for Cd) and the mean Igeo value was as high as 3.77. Cadmium, Cu, and Zn in rice and vegetables were comparable with those found four years ago, while As and Pb in edible parts were 2 to 5 times lower than before. The root uptake of Cd and Zn contributed mainly to their high concentrations in crops due to high exchangeable fraction of soil, while leafy vegetables accumulated elevated As and Pb contents mainly due to the atmospheric deposition. Metal concentrations in sugarcane roots were higher than those in rice and vegetable roots. The risk assessment for crops consumption showed that the hazard quotients values were of 21 to 25 times higher than the threshold level for vegetables and rice, indicating a potential non-carcinogenic risk to the consumers. The estimated mean total cancer risk value of 0.0516 more than 100 times exceeded the USEPA accepted risk level of 1×10(-4), indicating unsuitability of the soil for cultivating the food crops. Therefore, the local agricultural and the land-use policies need to be reevaluated.
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Affiliation(s)
- Jianbo Liao
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Zewei Wen
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Xuan Ru
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Jundong Chen
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Haizhen Wu
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, PR China
| | - Chaohai Wei
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; Key Laboratory of Environmental Protection and Eco-Remediation of Guangdong Regular Higher Education Institutions, South China University of Technology, Guangzhou 510006, PR China.
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25
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Ma SC, Zhang HB, Ma ST, Wang R, Wang GX, Shao Y, Li CX. Effects of mine wastewater irrigation on activities of soil enzymes and physiological properties, heavy metal uptake and grain yield in winter wheat. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2015; 113:483-490. [PMID: 25562177 DOI: 10.1016/j.ecoenv.2014.12.031] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 12/16/2014] [Accepted: 12/17/2014] [Indexed: 06/04/2023]
Abstract
In China, coal-mining industries are mainly located in the water shortage areas including arid or semiarid areas. Mine wastewater is used for irrigation of agricultural land in these areas. However, few studies have been conducted to address ecological and food safety risks caused by mine wastewater irrigation. In this research, a pot experiment was performed to examine the effects of mine wastewater irrigation on soil enzymes, physiological properties of wheat and potential risks of heavy metal contamination to wheat crop. Plants were subjected to three mine wastewater irrigation treatments: leacheate of coal gangue (T1), coal-washing wastewater (T2) and precipitated coal-washing wastewater (T3). Plants irrigated with well water were taken as the control (CK). The results showed that mine wastewater irrigation caused adverse effects on soil enzymes, physiological properties and grain yield of winter wheat. At anthesis, T1, T2 and T3 treatments significantly reduced the activities of soil enzymes (urease, sucrase and catalase), root activity and net photosynthetic rate of wheat compared to CK. At maturity, grain yield was decreased by 17.8%, 15.4% and 9.8% by T1, T2 and T3, respectively, as compared to that of CK. Importantly, mine wastewater irrigation resulted in accumulation of heavy metals (Cr, Pb, Cu and Zn) in wheat grain. Contents of these heavy metals in grains of winter wheat subjected to mine wastewater irrigation were significantly higher than those in CK. The comprehensive contamination indexes of wheat grain in T1, T2 and T3 all reached high pollution level. Our results showed that mine wastewater irrigation significantly increased the pollution risk of heavy metals, thus unsuitable for crop irrigation.
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Affiliation(s)
- Shou-Chen Ma
- Field scientific Observation and Research Base of Land Use, Ministry of Land and Resources, Henan Polytechnic University, Jiaozuo 454000, China.
| | - He-Bing Zhang
- Field scientific Observation and Research Base of Land Use, Ministry of Land and Resources, Henan Polytechnic University, Jiaozuo 454000, China
| | - Shou-Tian Ma
- College of Life Science, Henan Normal University, Xinxiang 453007, China
| | - Rui Wang
- Field scientific Observation and Research Base of Land Use, Ministry of Land and Resources, Henan Polytechnic University, Jiaozuo 454000, China
| | - Gui-Xian Wang
- Field scientific Observation and Research Base of Land Use, Ministry of Land and Resources, Henan Polytechnic University, Jiaozuo 454000, China
| | - Yun Shao
- College of Life Science, Henan Normal University, Xinxiang 453007, China
| | - Chun-Xi Li
- College of Life Science, Henan Normal University, Xinxiang 453007, China
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26
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Chen M, Lu G, Guo C, Yang C, Wu J, Huang W, Yee N, Dang Z. Sulfate migration in a river affected by acid mine drainage from the Dabaoshan mining area, South China. CHEMOSPHERE 2015; 119:734-743. [PMID: 25189685 DOI: 10.1016/j.chemosphere.2014.07.094] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2014] [Revised: 07/14/2014] [Accepted: 07/30/2014] [Indexed: 06/03/2023]
Abstract
Sulfate, a major component of acid mine drainage (AMD), its migration in an AMD-affected river which located at the Dabaoshan mine area of South China was investigated to pursue the remediation strategy. The existing factors of relatively low pH values of 2.8-3.9, high concentrations of SO4(2-) (∼1940 mg L(-1)) and Fe(3+) (∼112 mg L(-1)) facilitated the precipitation of schwertmannite (Fe8O8(OH)6SO4·nH2O) in the upstream river. Geochemical model calculations implied the river waters were supersaturated, creating the potential for precipitation of iron oxyhydroxides. These minerals evolved from schwertmannite to goethite with the increasing pH from 2.8 to 5.8 along the river. The concentration of heavy metals in river waters was great reduced as a result of precipitation effects. The large size of the exchangeable sulfate pool suggested that the sediments had a strong capacity to bind SO4(2-). The XRD results indicated that schwertmannite was the predominant form of sulfate-bearing mineral phases, which was likely to act as a major sulfate sink by incorporating water-borne sulfate into its internal structure and adsorbing it onto its surface. The small size of reduced sulfur pools and strong oxidative status in the surface sediments further showed that SO4(2-) shifting from water to sediment in form of sulfate reduction was not activated. In short, precipitation of sulfate-rich iron oxyhydroxides and subsequent SO4(2-) adsorption on these minerals as well as water dilution contributed to the attenuation of SO4(2-) along the river waters.
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Affiliation(s)
- Meiqin Chen
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; School of Environmental and Biological Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, PR China
| | - Guining Lu
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, South China University of Technology, Guangzhou 510006, PR China.
| | - Chuling Guo
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, South China University of Technology, Guangzhou 510006, PR China
| | - Chengfang Yang
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Jingxiong Wu
- School of Environmental and Biological Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, PR China
| | - Weilin Huang
- School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ 08901, USA
| | - Nathan Yee
- School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ 08901, USA
| | - Zhi Dang
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, PR China.
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27
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Zhuang P, Lu H, Li Z, Zou B, McBride MB. Multiple exposure and effects assessment of heavy metals in the population near mining area in South China. PLoS One 2014; 9:e94484. [PMID: 24728502 PMCID: PMC3984172 DOI: 10.1371/journal.pone.0094484] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2014] [Accepted: 03/17/2014] [Indexed: 11/26/2022] Open
Abstract
The objective of this study was to investigate the levels of Cd, Pb, Cu and Zn in the environment and several important food sources grown and consumed in the vicinity of Dabaoshan mine in Southern China, and evaluate potential health risks among local residents. The Cd, Pb, Cu and Zn concentrations of arable soils and well water near the mines exceeded the quality standard values. The concentrations of Cd and Pb in some food crops (rice grain, vegetable and soybean) samples were significantly higher than the maximum permissible level. The Cd and Pb concentrations in half of the chicken and fish meat samples were higher than the national standard. The residents living near Dabaoshan mine had higher Cd and Pb levels in hair than those of a non-exposed population. The intake of rice was identified as a major contributor to the estimated daily intake of these metals by the residents. The hazard index values for adults and children were 10.25 and 11.11, respectively, with most of the estimated risks coming from the intake of home-grown rice and vegetables. This study highlights the importance of multiple pathways in studying health risk assessment of heavy metal exposure in China.
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Affiliation(s)
- Ping Zhuang
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Huanping Lu
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Zhian Li
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Bi Zou
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Murray B. McBride
- Department of Crop and Soil Sciences, Cornell University, Ithaca, New York, United States of America
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28
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Zhao H, Xia B, Qin J, Zhang J. Hydrogeochemical and mineralogical characteristics related to heavy metal attenuation in a stream polluted by acid mine drainage: a case study in Dabaoshan Mine, China. J Environ Sci (China) 2012; 24:979-989. [PMID: 23505864 DOI: 10.1016/s1001-0742(11)60868-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Dabaoshan Mine, the largest mine in south China, has been developed since the 1970s. Acid mine drainage (AMD) discharged from the mine has caused severe environmental pollution and human health problems. In this article, chemical characteristics, mineralogy of ocher precipitations and heavy metal attenuation in the AMD are discussed based on physicochemical analysis, mineral analysis, sequential extraction experiments and hydrogeochemistry. The AMD chemical characteristics were determined from the initialwater composition, water-rock interactions and dissolved sulfide minerals in the mine tailings. The waters, affected and unaffected by AMD, were Ca-SO4 and Ca-HCO3 types, respectively. The affected water had a low pH, high SO4(2-) and high heavy metal content and oxidation as determined by the Fe2+/Fe3+ couple. Heavy metal and SO4(2-) contents of Hengshi River water decreased, while pH increased, downstream. Schwertmannite was the major mineral at the waste dump, while goethite and quartz were dominant at the tailings dam and streambed. Schwertmannite was transformed into goethite at the tailings dam and streambed. The sulfate ions of the secondary minerals changed from bidentate- to monodentate-complexes downstream. Fe-Mn oxide phases of Zn, Cd and Pb in sediments increased downstream. However, organic matter complexes of Cu in sediments increased further away from the tailings. Fe3+ mineral precipitates and transformations controlled the AMD water chemistry.
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Affiliation(s)
- Huarong Zhao
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
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29
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Kang Y, Liu G, Chou CL, Wong MH, Zheng L, Ding R. Arsenic in Chinese coals: distribution, modes of occurrence, and environmental effects. THE SCIENCE OF THE TOTAL ENVIRONMENT 2011; 412-413:1-13. [PMID: 22078371 DOI: 10.1016/j.scitotenv.2011.10.026] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2011] [Revised: 10/12/2011] [Accepted: 10/13/2011] [Indexed: 05/31/2023]
Abstract
Arsenic, one of the most hazardous elements occurring in coals, can be released to the environment during coal processing and combustion. Based on the available literature and published results obtained in our laboratory, the content, distribution and the modes of occurrence of As in Chinese coals, and its environmental and impacts are reviewed in this article. With the 4763 sets of data (from the literature) rearranged, the arithmetic mean As concentration of each province and weighted mean As concentration of the entire country (using the expected coal reserves as the weighting factor) were calculated. The weighted mean As concentration in Chinese coals is 3.18 mg/kg, with As concentration increasing from northern China to southern China. The As concentration in coal varies with coal-forming ages and coal ranks. Arsenic has several modes of occurrence in coals. According to results obtained by other studies and our own experiments, As is mainly associated with mineral matter (such as pyrite and other sulfide minerals) in coals, although a significant amount of arsenic is associated with organic matter. The accumulation of As in coal is controlled by many geological factors during coal-forming processes, including plant decomposition, sedimentary environments, and epigenetic hydrothermal activity. During the combustion of coal, As is released to the air, water, and soil, causing serious environmental pollution. More than 45% of the coal consumed in China is utilized by power plants, and it is estimated that nearly 522 tonnes, 21 tonnes and 252 tonnes of As are emitted into the atmosphere by industries, residential buildings and coal-fired power plants, respectively, every year.
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Affiliation(s)
- Yu Kang
- CAS Key Laboratory of Crust-Mantle Materials and Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China
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Chen A, Lin C, Lu W, Ma Y, Bai Y, Chen H, Li J. Chemical dynamics of acidity and heavy metals in a mine water-polluted soil during decontamination using clean water. JOURNAL OF HAZARDOUS MATERIALS 2010; 175:638-645. [PMID: 19913356 DOI: 10.1016/j.jhazmat.2009.10.055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2009] [Revised: 10/15/2009] [Accepted: 10/15/2009] [Indexed: 05/28/2023]
Abstract
A column leaching experiment was conducted to investigate the chemical dynamics of the percolating water and washed soil during decontamination of an acidic mine water-polluted soil. The results show that leaching of the contaminated soil with clean water rapidly reduced soluble acidity and ion concentrations in the soils. However, only <20% of the total actual acidity in the soil column was eliminated after 30 leaching cycles. It is likely that the stored acidity continues to be released to the percolating water over a long period of time. During the column leaching, dissolved Cu and Pb were rapidly leached out, followed by mobilization of colloidal Cu and Pb from the exchangeable and the oxide-bound fractions as a result of reduced ionic strength in the soil solution. The soluble Fe contained in the soil was rare, probably because the soil pH was not sufficiently low; marked mobility of colloidal Fe took place after the ionic strength of the percolating water was weakened and the mobilized Fe was mainly derived from iron oxides. In contrast with Cu, Pb and Fe, the concentration of leachate Zn and Mn showed a continuously decreasing trend during the entire period of the experiment.
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Affiliation(s)
- A Chen
- Centre for Ecological and Environmental Technologies, South China Agricultural University, Guangzhou 510642, China
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31
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Zhang S, Chen S, Zhang Q, Li P, Yuan C. Preparation and characterization of an ion exchanger based on semi-carbonized polyacrylonitrile fiber. REACT FUNCT POLYM 2008. [DOI: 10.1016/j.reactfunctpolym.2008.01.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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