Cathodic reduction of hexavalent chromium [Cr(VI)] coupled with electricity generation in microbial fuel cells
- 9 July 2008
- journal article
- Published by Springer Science and Business Media LLC in Biotechnology Letters
- Vol. 30 (11), 1959-1966
- https://doi.org/10.1007/s10529-008-9792-4
Abstract
A novel approach to Cr(VI)-contaminated wastewater treatment was investigated using microbial fuel cell technologies in fed-batch mode. By using synthetic Cr(VI)-containing wastewater as catholyte and anaerobic microorganisms as anodic biocatalyst, Cr(VI) at 100 mg/l was completely removed during 150 h (initial pH 2). The maximum power density of 150 mW/m2 (0.04 mA/cm2) and the maximum open circuit voltage of 0.91 V were generated with Cr(VI) at 200 mg/l as electron acceptor. This work verifies the possibility of simultaneous electricity production and cathodic Cr(VI) reduction.Keywords
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