Reduction of Cr (VI) by palladised biomass of Desulfovibrio vulgaris NCIMB 8303

Humphries, A. and Macaskie, L.E. (2005) Reduction of Cr (VI) by palladised biomass of Desulfovibrio vulgaris NCIMB 8303. Journal of Chemical Technology and Biotechnology, 80 (12). pp. 1378-1382.

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Abstract

Palladized biomass of Desulfovibrio vulgaris (Bio‐Pd(0)) reduced Cr(VI) to Cr(III) at an initial rate four‐fold higher than chemically‐prepared Pd(0) metal. Optimal Cr(VI) reduction by suspended Bio‐Pd(0) occurred at pH 3, whereas pH did not affect the rate of Cr(VI) reduction by Bio‐Pd(0) immobilized in agar beads. The rate of Cr(VI) reduction was concentration‐dependent below 300 µmol dm−3, and application of enzyme kinetics, considering Bio‐Pd(0) as an ‘artificial enzyme’, gave an apparent Km (Kmapp) of approx. 650 µmol dm−3 and Vmax of 1667 nmol h−1 mg Pd(0) for suspended Bio‐Pd(0). The potential of Bio‐Pd(0) as a method for the treatment of Cr(VI)‐wastes is discussed.

Item Type: Article
Divisions: Crop and Environment Sciences
Depositing User: Mr Darren Roberts
Date Deposited: 07 Nov 2018 09:23
Last Modified: 29 Nov 2018 14:14
URI: http://hau.repository.guildhe.ac.uk/id/eprint/16375

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