Journal
BIOTECHNOLOGY LETTERS
Volume 23, Issue 9, Pages 683-687Publisher
KLUWER ACADEMIC PUBL
DOI: 10.1023/A:1010352417399
Keywords
chromate bioreduction; Desulfovibrio sp.
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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 degreesC. 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 muM (threefold lower than that of D. vulgaris ATCC 29579) and a V(m)ax 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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