Development of a clean bioelectrochemical process for leaching of ocean manganese nodules

Kumari, Abha and Natarajan, KA (2002) Development of a clean bioelectrochemical process for leaching of ocean manganese nodules. In: Minerals Engineering, 15 (1-2). pp. 103-106.

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Abstract

Through the application of negative reduction potential significant reduction of manganic and iron oxides in the ocean manganese nodules can be achieved, liberating the occluded copper, nickel and cobalt for easy dissolution in an acid medium. Electroleaching and electrobioleaching of ocean manganese nodules in the presence of Thiobacillus ferrooxidans and Thiobacillus thiooxidans at the above negative applied dc potentials resulted in significant dissolution of copper, nickel and cobalt in 1 M H2SO4. The role of galvanic interactions in the bioleaching of ocean manganese nodules in the presence of T thiooxidans is also discussed, (C) 2002 Published by Elsevier Science Ltd.

Item Type:	Journal Article
Publication:	Minerals Engineering
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Keywords:	Bioleaching;Biotechnology;Redox reactions
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	20 Jul 2011 10:18
Last Modified:	20 Jul 2011 10:18
URI:	http://eprints.iisc.ac.in/id/eprint/39141

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