Microbially-induced separation of arsenopyrite and bioremediation of arsenic

Chandraprabha, M. N. ; Natarajan, K. A. (2009) Microbially-induced separation of arsenopyrite and bioremediation of arsenic Minerals & Metallurgical Processing, 26 (4). pp. 217-221. ISSN 0747-9182

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Official URL: http://www.smenet.org/docs/Publications/MMPJ/mmpj_...

Abstract

This paper discusses the role of the mineral-adapted acidiphilic microorganism Acidithiobacillus ferrooxidans in the beneficiation of arsenopyrite-containing multisulfides (pyrite and chalcopyrite) and the bioremediation of the resulting arsenical waste water. It was found that adaptation to minerals alters the surface properties of the microorganism. Bacterial adaptation to arsenopyrite and controlled bacterial adhesion to mineral surfaces lead to selectivity in arsenopyrite separation. Bioremoval of arsenic ions (both arsenite and arsenate ions) by Acidithiobacillus ferrooxidans is also discussed.

Item Type:Article
Source:Copyright of this article belongs to Society for Mining, Metallurgy & Exploration.
Keywords:Acidithiobacillus Ferrooxidans; Bioremediation; Arsenopyrite Beneficiation
ID Code:66450
Deposited On:22 Oct 2011 11:45
Last Modified:22 Oct 2011 11:45

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