Mine Drainage: Characterization, Treatment, Modeling, and Environmental Aspect

Wei, Xinchao; Wolfe, F. Andrew; Han, Yuexin

doi:10.2175/106143014x14031280668092

Cited by 9 publications

(3 citation statements)

References 49 publications

(49 reference statements)

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“…The pyritic wastes from mining activities arrive from the affluent Inkur river. This pollution source contained significant amounts of heavy metals (e.g., Zn, Pb, Mn, Cu, Cd) present as sulfides, and provided a low pH media that makes metallic forms readily available and, therefore, easy to propagate throughout the river basin [17][18][19][20]. Note.…”

Section: Trace Elementmentioning

confidence: 99%

Mining Activities and the Chemical Composition of R. Modonkul, Transbaikalia

Khazheeva

Plyusnin

Смирнова

et al. 2020

Water

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The Dzhidinsky orefield is located in the Zakamensky district of Buryatia. It is characterized by a high concentration of mineralization in a small area. The ores of the Dzhidinsky economic deposits are complex. This ore field includes Pervomaiskoye Mo, Kholtosonskoe W, and Inkurskoe W deposits. The catchment basin of the river Modonkul is located in the Dzhidinsky orefield. Mineral resource industry waste is a real threat to the city Zakamensk. Currently, the waste of deposits is located at the floodplain terrace and the watershed of the river Modonkul. In this work, the impact of the drainage mine and tributary Inkur on the formation chemical composition of the river Modonkul is studied. The 80 samples of water and suspended matter were taken from a surface of 0–0.5 m on seven sites. Physical and chemical parameters were measured at the sampling sites, and chemical composition was analyzed in the laboratory. In the natural background of the river, the major cations are, in decreasing order, Ca2+ > Mg2+ > Na+ + K+, and major anions are, also in decreasing order, HCO3− > SO42− > Cl−. Along the river, the chemical type of water changes from bicarbonate to sulfate across the sulfate-bicarbonate or bicarbonate-sulfate class and from calcium-magnesium across sodium-calcium-magnesium reverse calcium-magnesium group. Total dissolved solids (TDS) increase by a factor of 4.0–4.7 between the upper and mouth of the river. The dissolved and suspended loads were studied in the mixing zone of acid mine and river water. The different hydrochemistry characteristics may result from Fe, Al, and Mn hydroxide precipitation. The pH values and dissolved oxygen cycles could change the uptake of heavy metals on suspended iron and manganese oxides, and the mechanism of removing it in water. River particulates have the potential of regulating heavy metal inputs to aquatic systems from pollution. The ore elements or the heavy metals are removed from the water in two ways: by the runoff of Modonkul and the sedimentation of suspended material at the bottom. The inflow of mine water into the Modonkul river leads to the rare earth elements (REEs) composition with negative cerium and positive europium anomalies.

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Section: Trace Elementmentioning

confidence: 99%

Mining Activities and the Chemical Composition of R. Modonkul, Transbaikalia

Khazheeva

Plyusnin

Смирнова

et al. 2020

Water

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“…In last thirty years studied and published the results relating to acid rock drainage due to the presence of sulfide bearing minerals in active. Prediction and prevention are the best strategy in handing mine drainage problem and minimize its environmental impact [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Mining Activities and the Chemical Composition of R. Modonkul, Transbaikalia

Khazheeva

Plyusnin

Sanzhanova

2019

Proceedings of 4th International Electronic Conference on Water Sciences

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The paper presents the results of observations of the spatial variability of the chemical composition of the river Modonkul. According to these observations, the chemical composition changes from bicarbonate calcium-magnesium in the upper part of the river through sulfate-calcium-sodium (and other transitional differences) to sulfate-calcium-magnesium type in the river's mouth. Redistribution of dissolved and suspended forms of migration heavy metals occurs in the alkaline environment in river Modonkul. The data of the content rare earth elements in water river are obtained.Keywords: acid mine, change of the chemical type of water, alkaline barrier, precipitation of hydroxides, sorption of heavy metals

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“…Acid mine drainage (AMD) is one of the environmental problems associated with extensive mining activities . AMD is characterized by low pH values and high concentrations of sulfate and metals caused by the oxidation of sulfide minerals .…”

Section: Introductionmentioning

confidence: 99%

Injection of hydrogen gas stimulates acid mine drainage treatment in laboratory‐scale hydroponic root mats

Richter

Wießner

Zehnsdorf

et al. 2016

Engineering in Life Sciences

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The environmentally benign disposal of acid mine drainage (AMD) is still a technical challenge. In the present study, artificial AMD was treated in a laboratory‐scale floating hydroponic root mat of soft rush, Juncus effusus. This ecotechnological system was operated with hydrogen injection and water recirculation but without an external carbon supply. It achieved a mean increase of ΔpH = 3.3 up to pH ≈ 8.2, high sulfate removal of up to 87%, and efficient removal of iron (100%), aluminum (99.8%), manganese (97.4%), and zinc (99.6%). Sulfide was not detected in the outflow. Treatment performance correlated with the amount of hydrogen loading. Daily oscillations of the redox potential up to amplitudes of ΔEh ≈ 450 mV in a mean range of Eh ≈ −150 to +300 mV indicated a correlation of plant physiology and removal processes. Apparently, sulfate and metal removal were the result of chemolithotrophic microbial sulfate reduction supported by the externally provided H2 and chemoorganotrophic sulfate reduction driven by rhizodeposits. Bicarbonate generated in the microbial transformation of such plant‐derived organic carbon contributed to pH neutralization. The effluent's pH increase was governed further by recirculation of the treated AMD. The flow regime and the injection of hydrogen at the ground of the root mat caused concentration gradients where the most efficient removal occurred in the deepest zone of the root mat. Further investigations should target long‐term stability, plant growth dynamics, load variations, balances of carbon and sulfur, the removal of H2S and metal precipitates from the system as well as efficient hydrogen supply.

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Mine Drainage: Characterization, Treatment, Modeling, and Environmental Aspect

Cited by 9 publications

References 49 publications

Mining Activities and the Chemical Composition of R. Modonkul, Transbaikalia

Mining Activities and the Chemical Composition of R. Modonkul, Transbaikalia

Mining Activities and the Chemical Composition of R. Modonkul, Transbaikalia

Injection of hydrogen gas stimulates acid mine drainage treatment in laboratory‐scale hydroponic root mats

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