Column bioleaching of low-grade mining ore containing high level of smithsonite, talc, sphaerocobaltite and azurite

Present work describes the bioleaching potential of metals from low-grade mining ore containing smithsonite, sphaerocobaltite, azurite and talc as main gangue minerals with adapted consortium of Sulfobacillus thermosulfidooxidans strain-RDB and Thermoplasma acidophilum . Bioleaching potential improv...

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Bibliographic Details
Published in:Bioprocess and biosystems engineering 2012-03, Vol.35 (3), p.433-440
Main Authors: Ilyas, Sadia, Chi, Ruan, Bhatti, H. N., Bhatti, I. A., Ghauri, M. A.
Format: Article
Language:English
Subjects:
Biohydrometallurgy. Microbial leaching
Biological and medical sciences
Biotechnology
Chemistry
Chemistry and Materials Science
Energy sources
Environmental Engineering/Biotechnology
Food Science
Fundamental and applied biological sciences. Psychology
Geochemistry
Gram-Positive Endospore-Forming Rods - growth & development
Gram-Positive Endospore-Forming Rods - metabolism
Industrial and Production Engineering
Industrial applications and implications. Economical aspects
Industrial Chemistry/Chemical Engineering
Leaching
Metals - chemistry
Metals - metabolism
Microbiology
Mineralogy
Mining
Original Paper
Sulfobacillus thermosulfidooxidans
Talc - chemistry
Thermoplasma - growth & development
Thermoplasma - metabolism
Thermoplasma acidophilum
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Summary:Present work describes the bioleaching potential of metals from low-grade mining ore containing smithsonite, sphaerocobaltite, azurite and talc as main gangue minerals with adapted consortium of Sulfobacillus thermosulfidooxidans strain-RDB and Thermoplasma acidophilum . Bioleaching potential improved markedly by added energy source, acid preleaching and adaptation of microbial consortium with mixed metal ions. During whole leaching period including acid preleaching stage of 960 h and bioleaching stage of 212 days about 76% Co, 70% Zn, 84% Cu, 72% Ni and 63% Fe leached out.
ISSN:1615-7591
1615-7605
DOI:10.1007/s00449-011-0582-3