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Huang P, Zhang Y, Li Y, Gao H, Cui M, Chai S. A multiple isotope (S, H, O and C) approach to estimate sulfate increasing mechanism of groundwater in coal mine area. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 900:165852. [PMID: 37517724 DOI: 10.1016/j.scitotenv.2023.165852] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 07/09/2023] [Accepted: 07/26/2023] [Indexed: 08/01/2023]
Abstract
Groundwater in North China type coal mine area is an important source of domestic, industrial and agricultural water. To explore the sulfate increasing mechanism of groundwater in mining area and identify key influencing factors. In this paper, hydrochemistry and multi-isotope tracer techniques such as δ34SSO4, δ18OSO4, δ2HH2O, δ18OH2O and δ13CDIC were used to study the groundwater circulation law and the migration and transformation mechanism of sulfate and carbonate in coal mine area. The results show that: the hydrochemical types of groundwater in the coal mine area are mainly HCO3- and SO42- anions, while the cations are mainly Ca2+ and Mg2+. The sulfate content is significantly increased, and the pH shows weak alkalinity; the relationship between δ18OH2O and δ18HH2O shows that the dynamic field of groundwater changes significantly after coal mining or closure, and limestone water mainly comes from surface water recharge through 'skylight' infiltration. The relationships between δ18OSO4 and δ18OH2O, δ34SSO4 and δ18OSO4 show that the sulfate in groundwater of coal mine area is mainly derived from sulfide oxidation. The ∆δ18OSO4-H2O value of groundwater in coal mine area is greater than 8 ‰, and the oxygen content in sulfate is 25 %-75 % from oxygen in water, indicating that coal mining has disturbed the groundwater in the study area from reducing environment to oxidizing environment, promoted sulfide oxidation, and accelerated the dissolution of carbonate minerals. The δ13CDIC value and δ34SSO4 value in the coal mine area are inversely proportional. The δ13CDIC of groundwater in the coal mine area is affected by the δ34SSO4 value to a certain extent. Sulfuric acid participates in the dissolution of carbonate minerals, making the pH value weak and alkaline as a whole. This paper expounds the migration and transformation law of sulfate in groundwater in coal mine area, which has practical significance for groundwater quality management. The research results can provide theoretical support for the rational development and utilization of groundwater resources in coal mine areas.
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Affiliation(s)
- Pinghua Huang
- School of Resources and Environment Engineering, Henan Polytechnic University, 454000 Jiaozuo, China; Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic Region, 454000 Jiaozuo, China.
| | - Yanni Zhang
- School of Resources and Environment Engineering, Henan Polytechnic University, 454000 Jiaozuo, China.
| | - Yuanmeng Li
- School of Resources and Environment Engineering, Henan Polytechnic University, 454000 Jiaozuo, China
| | - Hongfei Gao
- School of Resources and Environment Engineering, Henan Polytechnic University, 454000 Jiaozuo, China
| | - Mengke Cui
- School of Resources and Environment Engineering, Henan Polytechnic University, 454000 Jiaozuo, China
| | - Shuangwei Chai
- School of Resources and Environment Engineering, Henan Polytechnic University, 454000 Jiaozuo, China
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Ódri Á, Amaral Filho J, Smart M, Broadhurst J, Harrison STL, Petersen J, Harris C, Edraki M, Becker M. Sulfur and oxygen isotope constraints on sulfate sources and neutral rock drainage-related processes at a South African colliery. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 846:157178. [PMID: 35839900 DOI: 10.1016/j.scitotenv.2022.157178] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 06/17/2022] [Accepted: 07/01/2022] [Indexed: 06/15/2023]
Abstract
Understanding the fundamental controls that govern the generation of mine drainage is essential for waste management strategies. Combining the isotopic composition of water (H and O) and dissolved sulfate (S and O) with hydrogeochemical measurements of surface and groundwater, microbial analysis, composition of sediments and precipitates, and geochemical modeling results in this study we discussed the processes that control mine water chemistry and identified the potential source(s) and possible mechanisms governing sulfate formation and transformation around a South African colliery. Compared to various South African water standards, water samples collected from the surroundings of a coal waste disposal facility had elevated Fe2+ (0.9 to 56.9 mg L-1), Ca (33.0 to 527.0 mg L-1), Mg (6.2 to 457.0 mg L-1), Mn (0.1 to 8.6 mg L-1) and SO4 (19.7 to 3440.8 mg L-1) and circumneutral pH. The pH conditions are mainly controlled by the release of H+ from pyrite oxidation and the subsequent dissolution of carbonates and aluminosilicate minerals. The phases predicted to precipitate by equilibrium calculation were green rusts, ferrihydrite, gypsum, ±epsomite. Low concentrations of deleterious metals in solution are due to their low abundance in the local host rocks, and their attenuation through adsorption onto secondary Fe precipitates and co-precipitation at the elevated pH values. The δ34S values of sulfate are enriched (-6.5 ‰ to +5.6 ‰) compared to that of pyrite sampled from the mine (mean -22.5 ‰) and overlap with that of the organic sulfur of coal from the region (-2.5 to +4.9 ‰). The presence of both sulfur reducing and oxidizing bacteria were detected in the collected sediment samples. Combined, the data are consistent with the dissolved sulfate in the sampled waters from the colliery being derived primarily from pyrite probably with the subordinate contribution of organic sulfur, followed by its partial removal through precipitation and microbially-induced reduction.
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Affiliation(s)
- Ágnes Ódri
- Minerals to Metals Initiative (MtM), Department of Chemical Engineering, University of Cape Town, Private Bag X3, Rondebosch, 7701 Cape Town, South Africa.
| | - Juarez Amaral Filho
- Minerals to Metals Initiative (MtM), Department of Chemical Engineering, University of Cape Town, Private Bag X3, Rondebosch, 7701 Cape Town, South Africa; Centre for Bioprocess Engineering Research, Department of Chemical Engineering, University of Cape Town, Private Bag X3, Rondebosch, 7701 Cape Town, South Africa.
| | - Mariette Smart
- Centre for Bioprocess Engineering Research, Department of Chemical Engineering, University of Cape Town, Private Bag X3, Rondebosch, 7701 Cape Town, South Africa.
| | - Jennifer Broadhurst
- Minerals to Metals Initiative (MtM), Department of Chemical Engineering, University of Cape Town, Private Bag X3, Rondebosch, 7701 Cape Town, South Africa.
| | - Susan T L Harrison
- Minerals to Metals Initiative (MtM), Department of Chemical Engineering, University of Cape Town, Private Bag X3, Rondebosch, 7701 Cape Town, South Africa; Centre for Bioprocess Engineering Research, Department of Chemical Engineering, University of Cape Town, Private Bag X3, Rondebosch, 7701 Cape Town, South Africa.
| | - Jochen Petersen
- Minerals to Metals Initiative (MtM), Department of Chemical Engineering, University of Cape Town, Private Bag X3, Rondebosch, 7701 Cape Town, South Africa; Hydrometallurgy Research Group, Department of Chemical Engineering, University of Cape Town, Private Bag X3, Rondebosch, 7701 Cape Town, South Africa.
| | - Chris Harris
- Department of Geological Sciences, University of Cape Town, Private Bag X3, Rondebosch, 7701 Cape Town, South Africa.
| | - Mansour Edraki
- Centre for Water in the Minerals Industry, Sustainable Minerals Institute, The University of Queensland, St Lucia, QLD 4072 Brisbane, Australia.
| | - Megan Becker
- Minerals to Metals Initiative (MtM), Department of Chemical Engineering, University of Cape Town, Private Bag X3, Rondebosch, 7701 Cape Town, South Africa; Centre for Minerals Research, Department of Chemical Engineering, University of Cape Town, Private Bag X3, Rondebosch, 7701 Cape Town, South Africa.
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Vasquez Y, Neculita CM, Caicedo G, Cubillos J, Franco J, Vásquez M, Hernández A, Roldan F. Passive multi-unit field-pilot for acid mine drainage remediation: Performance and environmental assessment of post-treatment solid waste. CHEMOSPHERE 2022; 291:133051. [PMID: 34826441 DOI: 10.1016/j.chemosphere.2021.133051] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 11/10/2021] [Accepted: 11/22/2021] [Indexed: 06/13/2023]
Abstract
This study evaluated the performance of a passive multi-unit field-pilot operating for 16 months to treat acid mine drainage (AMD) from a coal mine in Colombia Andean Paramo. The multi-unit field-pilot involved a combination of a pre-treatment unit (550 L) filled with dispersed alkaline substrate (DAS), and six passive biochemical reactors (PBRs; 220 L) under two configurations: open (PBRs-A) and closed (PBRs-B) to the atmosphere. The AMD quality was 1200 ± 91 mg L-1 Fe, 38.0 ± 1.3 mg L-1 Mn, 8.5 ± 1.6 mg L-1 Zn, and 3200 ± 183.8 mg L-1 SO42-, at pH 2.8. The input and output effluents were monitored to establish AMD remediation. Physicochemical stability of the post-treatment solids, including metals (Fe2+, Zn2+, and Mn2+) and sulfates for environmental contamination from reactive mixture post-treatment, was also assessed. The passive multi-unit field-pilot achieved a total removal of 74% SO42-, 63% Fe2+, and 48% Mn2+ with the line of PBRs-A, and 91% SO42-, 80% Fe2+, and 66% Mn2+ with the line of PBRs-B, as well as 99% removal for Zn2+ without significant differences (p < 0.05) between the two lines. The study of the physicochemical stability of the post-treatment solids showed they can produce acidic leachates that could release large quantities of Fe and Mn, if they are disposed in oxidizing conditions; contact with water or any other leaching solutions must be avoided. Therefore, these post-treatment solids cannot be disposed of in a municipal landfill. The differences in configuration between PBRs, open or closed to the atmosphere, induced changes in the performance of the passive multi-unit field-pilot during AMD remediation.
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Affiliation(s)
- Yaneth Vasquez
- Facultad de Ingenieria y Ciencias Basicas, Universidad Central, Cra. 5 No. 21-38, Bogotá, Colombia.
| | - Carmen M Neculita
- Research Institute on Mines and Environment (RIME), University of Quebec in Abitibi-Temiscamingue (UQAT), 445 Boulevard de l'Universite, Rouyn-Noranda, QC, J9X 5E4, Canada
| | - Gerardo Caicedo
- Grupo de Catálisis (GC-UPTC), Escuela de Ciencias Químicas, Facultad de Ciencias, Universidad Pedagógica y Tecnológica de Colombia (UPTC), Avenida Central del Norte No. 39-115, Tunja, Colombia
| | - Jairo Cubillos
- Grupo de Catálisis (GC-UPTC), Escuela de Ciencias Químicas, Facultad de Ciencias, Universidad Pedagógica y Tecnológica de Colombia (UPTC), Avenida Central del Norte No. 39-115, Tunja, Colombia
| | - Jair Franco
- Facultad de Ingenieria y Ciencias Basicas, Universidad Central, Cra. 5 No. 21-38, Bogotá, Colombia
| | - Mario Vásquez
- Facultad de Ingenieria y Ciencias Basicas, Universidad Central, Cra. 5 No. 21-38, Bogotá, Colombia
| | - Angie Hernández
- Grupo de Catálisis (GC-UPTC), Escuela de Ciencias Químicas, Facultad de Ciencias, Universidad Pedagógica y Tecnológica de Colombia (UPTC), Avenida Central del Norte No. 39-115, Tunja, Colombia
| | - Fabio Roldan
- Unidad de Saneamiento y Biotecnología Ambiental (USBA), Departamento de Biología, Pontificia Universidad Javeriana, Cra. 7 No. 40-62, Bogotá, Colombia
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Forecast of AMD Quantity by a Series Tank Model in Three Stages: Case Studies in Two Closed Japanese Mines. MINERALS 2020. [DOI: 10.3390/min10050430] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
There are about 100 sites of acid mine drainage (AMD) from abandoned/closed mines in Japan. For their sustainable treatment, future prediction of AMD quantity is crucial. In this study, AMD quantity was predicted for two closed mines in Japan based on a series tank model in three stages. The tank model parameters were determined from the relationship between the observed AMD quantity and the inflow of rainfall and snowmelt by using the Kalman filter and particle swarm optimization methods. The Automated Meteorological Data Acquisition System (AMeDAS) data of rainfall were corrected for elevation and by the statistical daily fluctuation model. The snowmelt was estimated from the AMeDAS data of rainfall, temperature, and sunshine duration by using mass and heat balance of snow. Fitting with one year of daily data was sufficient to obtain the AMD quantity model. Future AMD quantity was predicted by the constructed model using the forecast data of rainfall and temperature proposed by the Max Planck Institute–Earth System Model (MPI–ESM), based on the Intergovernmental Panel on Climate Change (IPCC) representative concentration pathway (RCP) 2.6 and RCP8.5 scenarios. The results showed that global warming causes an increase in the quantity and fluctuation of AMD, especially for large reservoirs and residence time of AMD. There is a concern that for mines with large AMD quantities, AMD treatment will be unstable due to future global warming.
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