The Reduction of Cr(VI) by Bacteria of the Genus Pseudomonas |
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Authors: | Dmitrenko G N Konovalova V V Shum O A |
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Institution: | (1) Dumanskii Institute of Colloid and Water Chemistry, National Academy of Sciences of Ukraine, bul'v. Vernadskogo 42, Kiev, 03142, Ukraine |
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Abstract: | Non-nitrate-reducing collection bacteria from the genus Pseudomonas were found to be able to use hexavalent chromium as a terminal electron acceptor. The reduction of Cr(VI) was accompanied by an increase in the cell biomass. At Cr(VI) concentrations in the medium lower than 15 mg/l, the non-nitrate-reducing pseudomonads reduced Cr(VI) less efficiently than did denitrifying pseudomonads. In contrast, at Cr(VI) concentrations higher than 30 mg/l, Cr(VI) was reduced more efficiently by the non-nitrate-reducing pseudomonads than by the denitrifying pseudomonads. |
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Keywords: | Cr(VI) reduction strictly aerobic and denitrifying bacteria |
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