Geochemistry, Mineralogy and Microbiology of Molybdenum in Mining-Affected Environments
AbstractMolybdenum 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. View Full-Text
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Frascoli, F.; Hudson-Edwards, K.A. Geochemistry, Mineralogy and Microbiology of Molybdenum in Mining-Affected Environments. Minerals 2018, 8, 42.
Frascoli F, Hudson-Edwards KA. Geochemistry, Mineralogy and Microbiology of Molybdenum in Mining-Affected Environments. Minerals. 2018; 8(2):42.Chicago/Turabian Style
Frascoli, Francesca; Hudson-Edwards, Karen A. 2018. "Geochemistry, Mineralogy and Microbiology of Molybdenum in Mining-Affected Environments." Minerals 8, no. 2: 42.
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