Chemical Fractionation and Contamination Intensity of Trace Elements in Stream Sediments at the Sarcheshmeh Porphyry Copper Mine, SE Iran

Khorasanipour, Mehdi; Tangestani, Majid H.; Naseh, Reza; Hajmohammadi, Hamid

doi:10.1007/s10230-012-0198-0

Cited by 10 publications

(1 citation statement)

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“…Several studies have reported that Mo is strongly associated with Fe(III) oxyhydroxides in acid oxidising mine wastes (Table 6; [33,67]). Under such conditions, Mo occurs as a negatively charged species (e.g., molybdate [68]), whereas Fe(III) (oxy)hydroxide surfaces exhibit net positive charge [69].…”

Section: Mineralogy Of Mo In Mine Wastesmentioning

confidence: 99%

Geochemistry, Mineralogy and Microbiology of Molybdenum in Mining-Affected Environments

Frascoli

Hudson‐Edwards

2018

Minerals

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Abstract:Molybdenum is an essential element for life, with growing production due to a constantly expanding variety of industrial applications. The potentially harmful effects of Mo on the environment, and on human and ecosystem health, require knowledge of Mo behavior in mining-affected environments. Mo is usually present in trace amounts in ore deposits, but mining exploitation can lead to wastes with very high Mo concentrations (up to 4000 mg/kg Mo for tailings), as well as soil, sediments and water contamination in surrounding areas. In mine wastes, molybdenum is liberated from sulfide mineral oxidation and can be sorbed onto secondary Fe(III)-minerals surfaces (jarosite, schwertmannite, ferrihydrite) at moderately acidic waters, or taken up in secondary minerals such as powellite and wulfenite at neutral to alkaline pH. To date, no Mo-metabolising bacteria have been isolated from mine wastes. However, laboratory and in-situ experiments in other types of contaminated land have suggested that several Mo-reducing and -oxidising bacteria may be involved in the cycling of Mo in and from mine wastes, with good potential for bioremediation. Overall, a general lack of data is highlighted, emphasizing the need for further research on the contamination, geochemistry, bio-availability and microbial cycling of Mo in mining-affected environments to improve environmental management and remediation actions.

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Section: Mineralogy Of Mo In Mine Wastesmentioning

confidence: 99%