Assessment of Metals Loading in an Acid Mine Drainage Watershed

Pak, Gijung; Jung, Myung-Pyo; Kim, Hwan-Suk; Mallari, Kristine Joy B.; Chung, Gunhui; Kim, Sungpyo; Kim, Young; Oa, Seong-Wook; Yoon, Jaeyoung

doi:10.1007/s10230-015-0336-6

Cited by 3 publications

(4 citation statements)

References 48 publications

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“…For assessing the role of bottom sediments, the informative indictor is the bottom accumulation coefficient or concentration ratio (CR), which, in accordance with (Methodology (1992), Pak et al 2016), is defined as the ratio of the concentration of elements in bottom sediments (Xs) to the concentration of these elements in water Xw (equation 1):…”

Section: Data Processing Methodsmentioning

confidence: 99%

Abandoned Copper Pyrite Mines: Migration of Chemical Elements from the Acid Mine Water Discharge Zone to the Hydrographic Network

Rybnikova,

Rybnikov,

Navolokina

2023

Preprint

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The paper presents a study of river water pollution by acid mine drainage (AMD) in the Middle Urals, Russia. We analyzed the macro- and microcomponent contents of waters and bottom sediments in the area of the abandoned Levikha copper pyrite deposit (Middle Urals, Russia) and variations in these contents throughout the following chain: mine water discharge (acidic environment) - neutralization (alkaline environment) - clarification (acidic environment) - small river (weakly acidic environment) – discharge into the hydrographic network (circumneutral environment). The degree to which the waters at this nature-manmade object are in equilibrium with respect to minerals was assessed, which enabled us to identify secondary mineral formation processes, forms of metal migration in the water bodies, and their impact on the environment. At sampling points, Ca, Mg, Na, K, Fe(2+), and Mn were found to migrate in all media mainly in free form. In acidic and weakly alkaline media, Cu and Zn tend to migrate both in free form and in the form of sulfate complexes, while in strongly alkaline media - only in the form of hydroxyl complexes. Al migrates in a sulfate and, less often, hydroxide form. Acidic water is supersaturated with respect to the minerals of the oxide and oxide hydroxide groups. Strongly alkaline and weakly alkaline waters are supersaturated in the group of oxides, oxide hydroxides, hydroxides, and sulfates. The waters of all environments are close to equilibrium or are undersaturated with respect to gypsum; and undersaturated with respect to carbonates. The most intense processes of metal precipitation and sorption by bottom sediments occur in a circumneutral medium: the concentration ratio (CR) exceeds n*105 (L/kg) for Al, Fe, Cu, and Pb.

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Section: Data Processing Methodsmentioning

confidence: 99%

Abandoned Copper Pyrite Mines: Migration of Chemical Elements from the Acid Mine Water Discharge Zone to the Hydrographic Network

Rybnikova,

Rybnikov,

Navolokina

2023

Preprint

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“…Pyrite (FeS 2 ) is responsible for starting acid generation and metals dissolution in coal and hard rock (Pak et al, 2016;Water, 2016;Bigham and Cravotta, 2016). Equation 1 shows that when pyrite is exposed to oxygen and water it get oxidized, resulting in hydrogen ion release (source of acidity), sulphate ions, and soluble ferrous iron cations.…”

Section: Formation Of Amd: Acidification and Contamination In Mine Voidsmentioning

confidence: 99%

“…When ferrous iron is produced from equation 4 and sufficient dissolved oxygen is present, the cycle of equations 2 and 3 is perpetuated (Younger, et al, 2002;Pak et al,2016). Without dissolved oxygen, equation 4 will continue to the completion and water will show elevated levels of ferrous iron (Younger, et al, 2002;Pak et al, 2016).…”

Section: Formation Of Amd: Acidification and Contamination In Mine Voidsmentioning

confidence: 99%

“…Without dissolved oxygen, equation 4 will continue to the completion and water will show elevated levels of ferrous iron (Younger, et al, 2002;Pak et al, 2016). Once the waters are sufficiently acidic, acidophilic bacteria (bacteria that thrive in low pH) will be able to establish themselves.…”

Section: Formation Of Amd: Acidification and Contamination In Mine Voidsmentioning

confidence: 99%

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A Review of Acid Mine Drainage in a Water-Scarce Country: Case of South Africa

Bwapwa

2017

EMSD

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Acid mine drainage (AMD) is a very acidic effluent containing high levels of sulphates, metals, sulphides, and salts. AMD management requires particular attention in order to avoid environmental adversity. Currently, there is a tremendous need for new technologies, effective management strategies and treatment processes regarding AMD in South Africa and worldwide. This includes the development of nearly zero waste processes. AMD in South Africa and many countries worldwide involves massive environmental issues that cannot be solved in the short to medium term. To address this problem much effort is required to develop efficient, innovative and costs effective methods to resolve the challenge of AMD. This review analyzes some major active treatment technologies and management options for AMD reclamation. It is also including some technical and economic strengths as well as setbacks related to some treatment methods.

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