Stewart, D.I., Burke, I.T. and Mortimer, R.J.G. (2007) Stimulation of Microbially Mediated Chromate Reduction in Alkaline Soil-Water Systems. Geomicrobiology Journal, 24 (7 & 8). pp. 655-669. ISSN 0149-0451 print / 1521-0529 online
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Acetate was added to two closed soil-water systems that are representative of the subsurface environment close to chromium ore processing residue disposal sites; one had a pH of 7.7, the other 9.3. Cr(VI) reduction occurred in both systems as part of a cascade of microbially mediated terminal electron-accepting processes, occurring between nitrate and iron reduction. Cr(VI) and subsequently iron reduction took longer to start and were slower in the more alkaline system. At the point when Cr(VI) reduction was essentially complete, the microbial populations in both systems showed an increase in species closely related to β-proteobacteria that are capable of nitrate reduction.
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|Keywords:||chromate; biostimulation; contaminated land; nitrate-reduction; iron-reduction; alkaline COPR|
|Institution:||The University of Leeds|
|Academic Units:||The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds)
The University of Leeds > Faculty of Engineering (Leeds) > School of Civil Engineering (Leeds)
The University of Leeds > Faculty of Engineering (Leeds) > School of Civil Engineering (Leeds) > Inst for Pathogen Control Engineering (Leeds)
|Depositing User:||Ms Caroline Wilson|
|Date Deposited:||21 Oct 2008 17:30|
|Last Modified:||15 Sep 2014 01:26|
|Publisher:||Taylor & Francis Group|