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A novel isolate of Desulfovibrio sp. with enhanced ability to reduce Cr(VI)

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Abstract

Kinetic analysis of the reduction of Cr(VI) by resting cell suspensions of Desulfovibrio vulgaris ATCC 29579 and a new isolate, Desulfovibrio sp. (`Oz7') was studied using lactate as the electron donor at 30 °C. The apparent K m (K m app) and V max with respect to Cr(VI) reduction was compared for both strains. Desulfovibio sp. `Oz7' had a K m app of 90 μM (threefold lower than that of D. vulgaris ATCC 29579) and a V max of 120 nmol h−1 mg−1 biomass dry wt (approx. 30% lower than for the reference strain). The potential of the new isolate for bioremediation of Cr(VI) wastewaters is discussed.

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Authors and Affiliations

  1. School of Biosciences, Edgbaston, Birmingham, B15 2TT, UK

    Amanda N. Mabbett & Lynne E. Macaskie

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  1. Amanda N. Mabbett
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  2. Lynne E. Macaskie
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Correspondence to Lynne E. Macaskie.

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Mabbett, A.N., Macaskie, L.E. A novel isolate of Desulfovibrio sp. with enhanced ability to reduce Cr(VI). Biotechnology Letters 23, 683–687 (2001). https://doi.org/10.1023/A:1010352417399

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  • DOI: https://doi.org/10.1023/A:1010352417399

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