Development of temperature-tolerant strains of Thiobacillus ferrooxidans to improve bioleaching kinetics

Modak, Jayant M and Natarajan, KA and Mukhopadhyay, Sanghamitra (1996) Development of temperature-tolerant strains of Thiobacillus ferrooxidans to improve bioleaching kinetics. In: Hydrometallurgy, 42 (01). pp. 51-61.

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Abstract

An isolate of Thiobacillus ferrooxidans derived from gold mine water samples was repeatedly subcultured at increasing temperatures (from 30 degrees to 42 degrees C) in 9K medium. The temperature-adapted strain was found to be more efficient in the bioleaching of pyrite mineral than the wild type. When temperature-tolerant strains were cultured repeatedly in 9K medium at 30 degrees C, the temperature tolerance was completely lost, These results indicate that the temperature tolerance was stress-dependent and not a permanent trait of the adapted strain, The potential utility of such temperature-tolerant strains of Thiobacillus ferrooxidans in sulphide mineral dissolution is demonstrated.

Item Type:	Journal Article
Publication:	Hydrometallurgy
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Department/Centre:	Division of Mechanical Sciences > Chemical Engineering Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	01 Jun 2009 05:16
Last Modified:	19 Sep 2010 05:30
URI:	http://eprints.iisc.ac.in/id/eprint/19760

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