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Leaching of nonferrous metals from copper converter slag with application of acidophilic microorganisms

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Abstract

The leaching process of copper and zinc from copper converter slag with ferric iron in sulfuric acid solutions obtained using the association of acidophilic chemolithotrophic microorganisms was investigated. The best parameters of chemical leaching (temperature 70°C, an initial concentration of ferric iron in the leaching solution of 10.1 g/L, and a solid phase content in the pulp of 10%) were selected. Carrying out the process under these parameters resulted in the recovery of 89.4% of copper and 39.3% of zinc into the solution. The possibility of the bioregeneration of ferric iron in the solution obtained after the chemical leaching of slag by iron-oxidizing acidophilic chemolithotrophic microorganisms without inhibiting their activity was demonstrated.

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Authors and Affiliations

  1. Winogradsky Institute of Microbiology, Russian Academy of Sciences, Moscow, 117312, Russia

    M. I. Muravyov & N. V. Fomchenko

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  1. M. I. Muravyov
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  2. N. V. Fomchenko
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Correspondence to M. I. Muravyov.

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Original Russian Text © M.I. Muravyov, N.V. Fomchenko, 2013, published in Prikladnaya Biokhimiya i Mikrobiologiya, 2013, Vol. 49, No. 6, pp. 561–569.

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Muravyov, M.I., Fomchenko, N.V. Leaching of nonferrous metals from copper converter slag with application of acidophilic microorganisms. Appl Biochem Microbiol 49, 562–569 (2013). https://doi.org/10.1134/S0003683813060136

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  • DOI: https://doi.org/10.1134/S0003683813060136

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