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Humphries, Andrea C and Macaskie, Lynne E
(2005).
DOI: https://doi.org/10.1002/jctb.1338
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 (Km app) 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.
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About
- Item ORO ID
- 82325
- Item Type
- Journal Item
- ISSN
- 0268-2575
- Keywords
- bioinorganic catalyst; chromium; immobilization; kinetics
- Academic Unit or School
-
Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
Faculty of Science, Technology, Engineering and Mathematics (STEM) - Copyright Holders
- © 2005 Society of Chemical Industry
- Related URLs
- Depositing User
- Andrea Patel