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Role of corundum-adapted strains of Bacillus polymyxa in the separation of hematite and alumina

Deo , N and Natarajan, KA (1999) Role of corundum-adapted strains of Bacillus polymyxa in the separation of hematite and alumina. In: Minerals and Metallurgical Processing, 16 (4). pp. 29-34.

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Strains of Bacillus polymyxa, preadapted and grown in the presence of corundum, were found to be capable of the efficient separation of hematite from alumina. Results of rests peformed using binary hematite-corundum and ternary hematite-quartz-corundum mixtures in the presence of cells and metabolic products separated from the adapted bacterial culture indicated that more than 99% of the hematite could he efficiently separated through selective flocculation after desliming. It was found that alumina-specific bioproteins and other nonproteinaceous compounds were secreted by bacterial cells after adaptation to the mineral. The utility of this bioprocessing is demonstrated in the removal of iron from bauxite ores through selective flocculation in the presence of the adapted bacteria.

Item Type: Journal Article
Publication: Minerals and Metallurgical Processing
Publisher: Society for Mining, Metallurgy & Exploration
Additional Information: Copyright of this article belongs to Society for Mining, Metallurgy & Exploration.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 29 Jun 2011 06:00
Last Modified: 29 Jun 2011 06:00
URI: http://eprints.iisc.ac.in/id/eprint/38754

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