Developments in Biotechnology for Environmentally Benign Iron Ore Beneficiation

Natarajan, KA (2013) Developments in Biotechnology for Environmentally Benign Iron Ore Beneficiation. In: TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS, 66 (5-6, S). pp. 457-465.

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Abstract

Biomineralization and biogenesis of iron ore deposits are illustrated in relation to indigenous microorganisms inhabiting iron ore mines. Aerobic and anaerobic microorganisms indigenous to iron oxide mineralization are analyzed. Microbially-induced flotation and flocculation of iron ore minerals such as hematite, alumina, calcite and quartz are discussed with respect to use of four types of microorganisms, namely, Paenibacillus polymyxa, Bacillus subtilis, Saccharomyces cerevisiae and Desulfovibrio desulfuricans. The role of the above organisms in the removal of silica, alumina, clays and apatite from hematite is illustrated with respect to mineral-specific bioreagents, surface chemical changes and microbe-mineral interaction mechanisms. Silica and alumina removal from real iron ores through biobeneficiation is outlined. Environmental benefits of biobeneficiation are demonstrated with respect to biodegradation of toxic reagents and environmentally-safe waste disposal and processing.

Item Type:	Journal Article
Publication:	TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
Publisher:	SPRINGER INDIA
Additional Information:	copyright for this article belongs to Springer Link
Keywords:	Biobeneficiation; Biomineralization; Bacteria; Iron ores; Silica; Alumina
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	01 Nov 2013 09:43
Last Modified:	01 Nov 2013 09:43
URI:	http://eprints.iisc.ac.in/id/eprint/47627

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