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

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^sub m^ (K^sub m app^) and V^sub max^ with respect to Cr(VI) reductio...

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Bibliographic Details
Published in:Biotechnology letters 2001-05, Vol.23 (9), p.683-687
Main Authors: MABBETT, Amanda N, MACASKIE, Lynne E
Format: Article
Language:English
Subjects:
Bacteria
Biological and medical sciences
Biological treatment of waters
Bioremediation
Biotechnology
Chromium
Desulfovibrio
Environment and pollution
Fundamental and applied biological sciences. Psychology
Industrial applications and implications. Economical aspects
Microbiology
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Summary: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^sub m^ (K^sub m app^) and V^sub max^ with respect to Cr(VI) reduction was compared for both strains. Desulfovibio sp. `Oz7' had a K^sub m app^ of 90 μM (threefold lower than that of D. vulgaris ATCC 29579) and a V^sub max^ of 120 nmol h^sup -1^ mg^sup -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.[PUBLICATION ABSTRACT]
ISSN:0141-5492
1573-6776
DOI:10.1023/A:1010352417399