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Wang Y, Wang C, Feng R, Li Y, Zhang Z, Guo S. A review of passive acid mine drainage treatment by PRB and LPB: From design, testing, to construction. ENVIRONMENTAL RESEARCH 2024; 251:118545. [PMID: 38431067 DOI: 10.1016/j.envres.2024.118545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 02/21/2024] [Accepted: 02/22/2024] [Indexed: 03/05/2024]
Abstract
An extensive volume of acid mine drainage (AMD) generated throughout the mining process has been widely regarded as one of the most catastrophic environmental problems. Surface water and groundwater impacted by pollution exhibit extreme low pH values and elevated sulfate and metal/metalloid concentrations, posing a serious threat to the production efficiency of enterprises, domestic water safety, and the ecological health of the basin. Over the recent years, a plethora of techniques has been developed to address the issue of AMD, encompassing nanofiltration membranes, lime neutralization, and carrier-microencapsulation. Nonetheless, these approaches often come with substantial financial implications and exhibit restricted long-term sustainability. Among the array of choices, the permeable reactive barrier (PRB) system emerges as a noteworthy passive remediation method for AMD. Distinguished by its modest construction expenses and enduring stability, this approach proves particularly well-suited for addressing the environmental challenges posed by abandoned mines. This study undertook a comprehensive evaluation of the PRB systems utilized in the remediation of AMD. Furthermore, it introduced the concept of low permeability barrier, derived from the realm of site-contaminated groundwater management. The strategies pertaining to the selection of materials, the physicochemical aspects influencing long-term efficacy, the intricacies of design and construction, as well as the challenges and prospects inherent in barrier technology, are elaborated upon in this discourse.
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Affiliation(s)
- Yu Wang
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
| | - Chunrong Wang
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China.
| | - Rongfei Feng
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
| | - Yang Li
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
| | - Zhiqiang Zhang
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
| | - Saisai Guo
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
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Li R, Wang B, Wu P, Zhang J, Zhang X, Chen M, Cao X, Feng Q. Revealing the role of calcium alginate-biochar composite for simultaneous removing SO 42- and Fe 3+ in AMD: Adsorption mechanisms and application effects. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 329:121702. [PMID: 37094733 DOI: 10.1016/j.envpol.2023.121702] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 04/20/2023] [Accepted: 04/21/2023] [Indexed: 05/03/2023]
Abstract
The remediation of acid mine drainage (AMD) is particularly challenging because it contains a large amount of Fe3+ and a high concentration of SO42-. To reduce the pollution caused by SO42- and Fe3+ in AMD and realize the recycling of solid waste, this study used distillers grains as raw materials to prepare biochar at different pyrolysis temperatures. Calcium alginate-biochar composite (CA-MB) was further synthesized via the entrapment method and used to simultaneously remove SO42- and Fe3+ from AMD. The effects of different influencing factors on the sorption process of SO42- and Fe3+ were studied through batch adsorption experiments. The adsorption behaviors and mechanisms of SO42- and Fe3+ were investigated with different adsorption models and characterizations. The results showed that the adsorption process of CA-MDB600 on SO42- and Fe3+ could be well described by Elovich and Langmuir-Freundlich models. It was further proved by the site energy analysis that the adsorption mechanisms of SO42- onto CA-MDB600 were mainly surface precipitation and electrostatic attraction, while that of Fe3+ removal was attributed to ion exchange, precipitation, and complexation. The applications of CA-MDB600 in actual AMD proved its good application potential. This study indicates that CA-MDB600 could be applied as a promising eco-friendly adsorbent for the remediation of AMD.
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Affiliation(s)
- Rui Li
- College of Resource and Environmental Engineering, Guizhou University, Guiyang, Guizhou, 550025, China
| | - Bing Wang
- College of Resource and Environmental Engineering, Guizhou University, Guiyang, Guizhou, 550025, China; Key Laboratory of Karst Georesources and Environment, Ministry of Education, Guiyang, Guizhou, 550025, China; Guizhou Karst Environmental Ecosystems Observation and Research Station, Ministry of Education, Guiyang, Guizhou, 550025, China.
| | - Pan Wu
- College of Resource and Environmental Engineering, Guizhou University, Guiyang, Guizhou, 550025, China; Key Laboratory of Karst Georesources and Environment, Ministry of Education, Guiyang, Guizhou, 550025, China; Guizhou Karst Environmental Ecosystems Observation and Research Station, Ministry of Education, Guiyang, Guizhou, 550025, China
| | - Jian Zhang
- Key Laboratory of Karst Georesources and Environment, Ministry of Education, Guiyang, Guizhou, 550025, China
| | - Xueyang Zhang
- School of Environmental Engineering, Xuzhou University of Technology, Xuzhou, Jiangsu, 221018, China
| | - Miao Chen
- College of Resource and Environmental Engineering, Guizhou University, Guiyang, Guizhou, 550025, China
| | - Xingxing Cao
- College of Resource and Environmental Engineering, Guizhou University, Guiyang, Guizhou, 550025, China
| | - Qianwei Feng
- College of Resource and Environmental Engineering, Guizhou University, Guiyang, Guizhou, 550025, China
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Li R, Chen J, Zhang H, Rehman F, Siddique J, Shahab A, Mo Z, Luo L. Facile synthesis of magnetic-activated nanocomposites for effective removal of cationic and anionic dyes in an aqueous environment: an Equilibrium Isotherm, kinetics and thermodynamic studies. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2022.11.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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