Effect of acidic treatment of the chemical composition and bacterial oxidation of arsenic-bearing gold concentrate

Effect of acidic pretreatment of arsenic-bearing gold concentrate, a promising gold source, on its chemical composition and efficiency of its bacterial oxidation (BO) was studied. The titer of sulfobacilli during BO of the concentrate after high-temperature acidic treatment was 9.0 × 10 7 cells/ml,...

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Bibliographic Details
Published in:Applied biochemistry and microbiology 2008-09, Vol.44 (5), p.507-511
Main Authors: Fomchenko, N. V., Pivovarova, T. A., Kondratyeva, T. F.
Format: Article
Language:English
Subjects:
Arsenic
Bacteria
Biochemistry
Biomedical and Life Sciences
Biotechnology
Chemical composition
Gold
High temperature
Life Sciences
Medical Microbiology
Microbiology
Oxidation
Sulfides
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Summary:Effect of acidic pretreatment of arsenic-bearing gold concentrate, a promising gold source, on its chemical composition and efficiency of its bacterial oxidation (BO) was studied. The titer of sulfobacilli during BO of the concentrate after high-temperature acidic treatment was 9.0 × 10 7 cells/ml, the degree of arsenic sulfide oxidation being 71.1%, and in the control, 6.5 × 10 7 cells/ml with the oxidation degree as low as 48.7%. Deeper oxidation of the main gold-containing mineral, arsenic sulfide, would allow more efficient gold recovery from the concentrate.
ISSN:0003-6838
1608-3024
DOI:10.1134/S0003683808050098