Cathodic reduction of hexavalent chromium [Cr(VI)] coupled with electricity generation in microbial fuel cells

Gang Wang, Liping Huang, Yifeng Zhang

Research output: Contribution to journalJournal articleResearchpeer-review

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.
Keyword: Electron acceptor,Power density,Cr(VI) reduction,Microbial fuel cell
Original languageEnglish
JournalBiotechnology Letters
Volume30
Issue number11
Pages (from-to)1959-1966
ISSN0141-5492
DOIs
Publication statusPublished - 2008
Externally publishedYes

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