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Microbial Aspects of Environmentally Benign Iron Ore

Natarajan, KA (2009) Microbial Aspects of Environmentally Benign Iron Ore. In: Iron Ore Conference 2009, July 27-29, 2009, Perth, Australia, pp. 27-34.

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Official URL: http://www.ausimm.com.au/publications/epublication...

Abstract

Many types of micro-organisms inhabit iron ore deposits contributing to biogenic formation and conversion of iron oxides and associated minerals. Bacteria such as Paenibacillus polymyxa arc capable of significantly altering the surface chemical behaviour of iron ore minerals such as haematite, alumina, calcite and silica. Differing mineral surface affinities of bacterial cells and metabolic products such as proteins and polysaccharides can be utilised to induce their flotation or flocculation. Mineral-specific bioreagents such as proteins are generated when bacteria are grown in the presence of haematite, alumina, calcite and silica. Alumina-grown bacterial cells and proteins separated from such cells were found to be capable of separating alumina from haematite. Biodegradation of iron ore flotation collectors such as amines and oleates can be effectively utilised to achieve environmental control in iron ore processing mills.

Item Type: Conference Paper
Additional Information: Copyright for this article belongs to Australasian Institute of Mining and Metallurgy.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 07 Jan 2010 05:25
Last Modified: 07 Jan 2010 05:25
URI: http://eprints.iisc.ernet.in/id/eprint/24558

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