Mine drainage: Remediation technology and resource recovery

Viadero, Roger C.; Zhang, Shicheng; Hu, Xiaomin; Wei, Xinchao

doi:10.1002/wer.1401

Cited by 10 publications

(5 citation statements)

References 91 publications

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“…Secondly, the AMD effluent itself can be managed using active or passive treatments developed to raise pH and remove metals. Active technologies include chemical treatments such as adsorption process, selective precipitation, membrane technology and electrochemical process but also biological treatments using bacteria or microalgae in bioreactors [ 58 ]. Passive approaches implement flow-through systems bringing into contact the AMD effluent with various substrates, including inert (e.g., siderurgical slags were proposed as an efficient low-cost material [ 59 ]) or organic (e.g., compost) matrices.…”

Section: Discussionmentioning

confidence: 99%

A Multidisciplinary Approach for the Assessment of Origin, Fate and Ecotoxicity of Metal(loid)s from Legacy Coal Mine Tailings

Gauthier-Manuel

Radola

Choulet

et al. 2021

Toxics

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Over the course of history, the development of human societies implied the exploitation of mineral resources which generated huge amounts of mining wastes leading to substantial environmental contamination by various metal(loid)s. This is especially the case of coal mine tailings which, subjected to weathering reactions, produce acid mine drainage (AMD), a recurring ecological issue related to current and past mining activities. In this study, we aimed to determine the origin, the fate and the ecotoxicity of metal(loid)s leached from a historical coal tailing heap to the Beuveroux river (Franche-Comté, France) using a combination of mineralogical, chemical and biological approaches. In the constitutive materials of the tailings, we identified galena, tetrahedrite and bournonite as metal-rich minerals and their weathering has led to massive contamination of the water and suspended particles of the river bordering the heap. The ecotoxicity of the AMD has been assessed using Chironomus riparius larvae encaged in the field during a one-month biomonitoring campaign. The larvae showed lethal and sub-lethal (growth and emergence inhibition and delay) impairments at the AMD tributary and near downstream stations. Metal bioaccumulation and subcellular fractionation in the larvae tissues revealed a strong bioavailability of, notably, As, Pb and Tl explaining the observed biological responses. Thus, more than 70 years after the end of mining operations, the coal tailings remain a chronic source of contamination and environmental risks in AMD effluent receiving waters.

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Section: Discussionmentioning

confidence: 99%

A Multidisciplinary Approach for the Assessment of Origin, Fate and Ecotoxicity of Metal(loid)s from Legacy Coal Mine Tailings

Gauthier-Manuel

Radola

Choulet

et al. 2021

Toxics

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“…Among the different effluents and polluted soils that are produced from abandoned mining facilities, acid mine drainage (AMD) is probably those that represents the highest potential hazard to the environment (3). As its name indicates, the AMD has an acidic pH (between 1 and 4) that is produced by the contact between the polluted soil and rainwater, producing puddles contaminated with metal ions (4).…”

Section: Introductionmentioning

confidence: 99%

Coupling of electrodialysis and bio‐electrochemical systems for metal and energy recovery from acid mine drainage

Delgado

Llanos

Fernández-Morales

2023

J of Chemical Tech & Biotech

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BACKGROUND: This work study the treatment of a synthetic sphalerite acid mine drainage (AMD). The treatment was carried out by means of a previous concentration stage, by using electrodialysis, and a subsequent electrodeposition by using bioelectrochemical system (BES).RESULTS: Operating the electrodialysis at 8V and at a diluate/concentrate volume ratio of 3 the best concentration results were obtained. This treatment yielded a concentrate fraction of about 25% of the volume and a clear fraction of about 75% of the volume.The concentrated fraction was treated in a BES to electrodeposite the metal contained.Operating as microbial fuel cell (MFC), the spontaneous reactions took place and in 2 days all the Fe 3+ was reduced to Fe 2+ , then all the Cu 2+ was electrodeposited as pure Cu 0 in about 8 d. The maximum current density attained in this stage was 0.1 mA cm −2 and the maximum power was 0.05 W cm −2 . Then, a subsequent operation as microbial electrolysis cell (MEC) allowed to simultaneously recover the Fe 2+ , Ni 2+ , Zn 2+ , Mn 2+ and Cd 2+ as a mixed metal mass. CONCLUSION:The electrodialysis yielded a clear effluent representing 75% of the total volume and a concentrated effluent accounting for 25%. It was possible to treat the concentrated effluent in a MFC recovering pure Cu 0 with a net electricity generation. The non-spontaneous metal reductions were subsequently accomplished by means of MEC, being the electricity requirements lower than in the case of the raw AMD because of the higher mass transfer rate and the reduction of the Ohmic loses.

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“…It is one of the most serious environmental problems in the mining industry [2,3]. Therefore, it is particularly necessary and urgent to explore and seek effective AMD treatment methods and technologies, which are important for the sustainable development of agriculture and the economy in mining areas and for safeguarding residents' physical and mental health [4][5][6]. The traditional neutralization and sedimentation method and artificial wetland method for AMD treatment have the disadvantages of secondary pollution, expensive treatment costs, and large floor space [7,8].…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the treatment of AMD by SRB immobilized particles containing “active iron” system

An,

Hu,

Chen

et al. 2023

PLoS ONE

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The inhibition and toxicity of high acidity and heavy metals on sulfate-reducing bacteria in acid mine drainage (AMD) were targeted. Highly active SRB immobilized particles were prepared using SRB, warm sticker wastes (iron powders), corncobs, and Maifan stones as the main matrix materials, employing microbial immobilization technology. The repair ability and reusability of highly active immobilized particles for AMD were explored. The results indicate that the adaptability of immobilized particles to AMD varied under different initial conditions, such as pH, Mn2+, and SO42-. The adsorption process of immobilized particles on Mn2+ follows the quasi-second-order kinetic model, suggesting that it involves both physical and chemical adsorption. The maximum adsorption capacity of immobilized particles for Mn2+ is 3.878 mg/g at a concentration of 2.0 mg/L and pH 6. On the other hand, the reduction process of immobilized particles on SO42- adheres to the first-order reaction kinetics, indicating that the reduction of SO42- is primarily driven by the dissimilation reduction of SRB. The maximum reduction rate of SO42- by immobilized particles is 94.23% at a concentration of 800 mg/L and pH 6. A layered structure with a flocculent appearance formed on the surface of the immobilized particles. The structure’s characteristics were found to be consistent with sulfate green rust (FeII4FeIII2(OH)12SO4·8H2O). The chemisorption, ion exchange, dissimilation reduction, and surface complexation occurring between the matrices in the immobilized particles can enhance the alkalinity of AMD and decrease the concentration of heavy metals and sulfates. These results are expected to offer novel insights and materials for the treatment of AMD using biological immobilization technology, as well as improve our understanding of the mechanisms behind biological and abiotic enhanced synergistic decontamination.

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Mine drainage: Remediation technology and resource recovery

Cited by 10 publications

References 91 publications

A Multidisciplinary Approach for the Assessment of Origin, Fate and Ecotoxicity of Metal(loid)s from Legacy Coal Mine Tailings

A Multidisciplinary Approach for the Assessment of Origin, Fate and Ecotoxicity of Metal(loid)s from Legacy Coal Mine Tailings

Coupling of electrodialysis and bio‐electrochemical systems for metal and energy recovery from acid mine drainage

Experimental study on the treatment of AMD by SRB immobilized particles containing “active iron” system

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