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Arsenic-Microbe-Mineral Interactions in Mining-Affected Environments
Department of Earth and Planetary Sciences, Birkbeck, University of London, Malet St., London WC1E 7HX, UK
Institute of Structural and Molecular Biology, University College London, Gower Street, London WC1E 6BT, UK
* Author to whom correspondence should be addressed.
Received: 29 August 2013; in revised form: 20 September 2013 / Accepted: 23 September 2013 / Published: 9 October 2013
Abstract: The toxic element arsenic (As) occurs widely in solid and liquid mine wastes. Aqueous forms of arsenic are taken up in As-bearing sulfides, arsenides, sulfosalts, oxides, oxyhydroxides, Fe-oxides, -hydroxides, -oxyhydroxides and -sulfates, and Fe-, Ca-Fe- and other arsenates. Although a considerable body of research has demonstrated that microbes play a significant role in the precipitation and dissolution of these As-bearing minerals, and in the alteration of the redox state of As, in natural and simulated mining environments, the molecular-scale mechanisms of these interactions are still not well understood. Further research is required using traditional and novel mineralogical, spectroscopic and microbiological techniques to further advance this field, and to help design remediation schemes.
Keywords: arsenic; prokaryotes; mine; mineral; tailings; contamination; remediation
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Hudson-Edwards, K.A.; Santini, J.M. Arsenic-Microbe-Mineral Interactions in Mining-Affected Environments. Minerals 2013, 3, 337-351.
Hudson-Edwards KA, Santini JM. Arsenic-Microbe-Mineral Interactions in Mining-Affected Environments. Minerals. 2013; 3(4):337-351.
Hudson-Edwards, Karen A.; Santini, Joanne M. 2013. "Arsenic-Microbe-Mineral Interactions in Mining-Affected Environments." Minerals 3, no. 4: 337-351.