Biooxidation of a Gold-Arsenic Sulphide Concentrate by a Two-Stage Oxidation Using Consecutively Acidophilic and Neutrophilic Bacteria

A.V. Belyi; Natalia Solopova; Vladimir Sekachev; Anatoliy Teleutov; Aleksandr Malashonok; Grigoriy Krasilnikov

doi:10.4028/www.scientific.net/AMR.1130.329

Paper Titles

Systems Biology of Acidophile Biofilms for Efficient Metal Extraction
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A Study of Permeability and Diffusion at the Agglomerate-Scale in Heap (Bio)Leaching Systems
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Bioreactor Process Optimization for Bioleaching of Fine-Grained Residues from Copper Smelting
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Microstructure Evolution of Ore Particles during Bioleaching Based on X-Ray Micro-Computed Tomography Images
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Biooxidation of a Gold-Arsenic Sulphide Concentrate by a Two-Stage Oxidation Using Consecutively Acidophilic and Neutrophilic Bacteria
p.329

Blue-Copper Proteins: Expression of Coding Genes from Sulfobacillus Spp. and Iron Oxidation in Column Bioleaching Tests
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Bioleaching of Chalcopyrite by Thermophilic Archaea
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Comparative Study of Iron and Sulfur Speciation Transformation of Pyrite and Marcasite by Extreme Thermophilic Archaea Acidianus manzaensis
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Reductive Dissolution of Iron Oxides and Manganese Bioleaching by Acidiphilium cryptum JF-5
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1130Biooxidation of a Gold-Arsenic Sulphide...

Biooxidation of a Gold-Arsenic Sulphide Concentrate by a Two-Stage Oxidation Using Consecutively Acidophilic and Neutrophilic Bacteria

Abstract:

This research work has developed a processing technology for full oxidation of the biocake from gold-arsenic flotation concentrate with high pyrrhotite content by neutrophilic association of microorganisms, which oxidize elemental sulphur and antimony sulphide at a high rate. Biocake, which is produced as a result of oxidizing the sulphides in the flotation concentrate at pH 1,7 – 1,9 by acidophilic bacteria of chemolithotrophic microorganisms and containing around 3%-5% of elemental sulphur, is then fully oxidized by association of neutrophilic bacteria at рН 7,0-8,0.

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Periodical:

Advanced Materials Research (Volume 1130)

Pages:

329-332

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1130.329

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Online since:

November 2015

Authors:

A.V. Belyi*, Natalia Solopova, Vladimir Sekachev, Anatoliy Teleutov, Aleksandr Malashonok, Grigoriy Krasilnikov

Keywords:

Bio Cake, Bio-Oxidation, Elemental Sulphur, Neutrophilic Association of Chemolithotrophic Microorganisms, Sulphide Minerals

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References

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