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Title: Bioleaching of low-grade copper ore using indigenous microorganisms
Authors: Pradhan, D
Pal, S
Sukla, LB
Chaudhury, G Roy
Das, T
Keywords: Bioleaching;Low-grade copper ore;Acidithiobacillis ferrooxidans
Issue Date: Nov-2008
Publisher: CSIR
Abstract: Investigations have been carried out on the iron oxidation rate of Acidithiobacillus ferrooxidans, the bacteria used in bioleaching process. It was observed that the regeneration time of the bacteria is reduced from 168 to 16 h by repeated sub-culturing, which in turn gave rise to higher iron oxidation rate thus increasing the kinetics of the process. This active strain was utilized for bioleaching of low-grade copper ore by varying two parameters namely, pH and pulp density. It was observed that around 30% of copper could be leached at an initial pH and pulp density of 2 and 20% (m/v) respectively.
Page(s): 588-592
ISSN: 0971–457X
Appears in Collections:IJCT Vol.15(6) [November 2008]

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