Jarosite-related chemical processes and water ecotoxicity in simplified anaerobic microcosm wetlands

Zhu, Lei; Lin, Chin‐Chung; Wu, Yali; Lu, Wenzhou; Liu, Y; Ma, Yibing; Chen, A

doi:10.1007/s00254-007-0758-y

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Use Of Wetlands1

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2010

2013

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Cited by 6 publications

(1 citation statement)

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“…Moreover, the accumulation of metals in wetlands creates a metal-rich aquatic environment which may experience changes in its hydrology or climate in the long or short term. DO: dissolved oxygen; net alkaline: alkalinity > acidity; net acidic: acidity > alkalinity wetland during drying, the minerals will become unstable upon water inundation (Zhu et al 2008). Drying out of a wetland will lead to the oxidation of biological materials and sulfides, and the formation of evaporative salts.…”

Section: Use Of Wetlandsmentioning

confidence: 99%

Mine Wastes

Lottermoser

2010

353

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Section: Use Of Wetlandsmentioning

confidence: 99%

Mine Wastes

Lottermoser

2010

353

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Mine Water

Lottermoser¹

2010

Mine Wastes

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Long-term geochemical evolution of acidic mine wastes under anaerobic conditions

Lin

Ying

2013

Environ Geochem Health

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A nearly 5-year anaerobic incubation experiment was conducted to observe the geochemical evolution of an acidic mine waste. Long-term storage of the mine waste under strict anaerobic conditions caused marked increase in aqueous sulfur, while aqueous iron showed no remarkable change. Co-existing oxidation and reduction of elemental sulfur appeared to play a central role in controlling the evolutionary trends of aqueous sulfur and iron. Addition of organic matter increased the aqueous Fe concentration, possibly due to enhanced iron mobilization by microbial iron reduction and increased iron solubility by forming organically complexed Fe species. Further addition of CaCO3 resulted in immobilization of aqueous iron and sulfur due to elevated pH and gypsum formation. The chemical behaviors of environmentally significant metals were markedly affected by the added organic matter; Al, Cr, Cu, Ni and Zn tended to be immobilized probably due to elevated pH and complexation with insoluble organic molecules, while As and Pb tended to be mobilized. Jarosite exhibited high stability after nearly 5 years of anaerobic incubation and even under circumneutral pH conditions. Long-term weathering of aluminosilicate through acid attack raised pH, while continuous reaction between the added CaCO3 and mine waste-borne stored acid decreased pH.

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Jarosite-related chemical processes and water ecotoxicity in simplified anaerobic microcosm wetlands

Cited by 6 publications

References 24 publications

Mine Wastes

Mine Wastes

Mine Water

Long-term geochemical evolution of acidic mine wastes under anaerobic conditions

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