Diola Marina Núñez-Ramírez, Aquiles Solís-Soto, Javier López-Miranda, Benito Pereyra-Alférez, Miriam Rutiaga-Quiñónes, Luis Medina-Torres, and Hiram Medrano-Roldán, Zinc bioleaching from an iron concentrate using Acidithiobacillus ferrooxidans strain from Hercules Mine of Coahuila, Mexico, Int. J. Miner. Metall. Mater., 18(2011), No. 5, pp.523-526. https://dx.doi.org/10.1007/s12613-011-0472-3
Cite this article as: Diola Marina Núñez-Ramírez, Aquiles Solís-Soto, Javier López-Miranda, Benito Pereyra-Alférez, Miriam Rutiaga-Quiñónes, Luis Medina-Torres, and Hiram Medrano-Roldán, Zinc bioleaching from an iron concentrate using Acidithiobacillus ferrooxidans strain from Hercules Mine of Coahuila, Mexico, Int. J. Miner. Metall. Mater., 18(2011), No. 5, pp.523-526. https://dx.doi.org/10.1007/s12613-011-0472-3

Zinc bioleaching from an iron concentrate using Acidithiobacillus ferrooxidans strain from Hercules Mine of Coahuila, Mexico

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  • The iron concentrate from Hercules Mine of Coahuila, Mexico, which mainly contained pyrite and pyrrhotite, was treated by the bioleaching process using native strain Acidithiobacillus ferrooxidans (A. ferrooxidans) to determine the ability of these bacteria on the leaching of zinc. The native bacteria were isolated from the iron concentrate of the mine. The bioleaching experiments were carried out in shake flasks to analyze the effects of pH values, pulp density, and the ferrous sulfate concentration on the bioleaching process. The results obtained by microbial kinetic analyses for the evaluation of some aspects of zinc leaching show that the native bacteria A. ferrooxidans, which is enriched with a 9K Silverman medium under the optimum conditions of pH 2.0, 20 g/L pulp density, and 40 g/L FeSO4, increases the zinc extraction considerably observed by monitoring during15 d, i.e., the zinc concentration has a decrease of about 95% in the iron concentrate.
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