title: Cathodic reduction of hexavalent chromium [Cr(VI)] coupled with electricity generation in microbial fuel cells.
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/m(2) (0.04 mA/cm(2)) 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.
authors.affiliation: Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education (MOE), School of Environmental and Biological Science & Technology, Dalian University of Technology, No.2, Linggong Road, Dalian, 116024, China.
authors.forename: Gang
authors.initials: G
authors.lastname: Wang
authors.forename: Liping
authors.initials: L
authors.lastname: Huang
authors.forename: Yifeng
authors.initials: Y
authors.lastname: Zhang
mesh_terms: D001674:Bioelectric Energy Sources; D019149:Bioreactors / Q000382:microbiology*; D002857:Chromium / Q000737:chemistry*; D004560:Electricity; D004563:Electrochemistry; D010084:Oxidation-Reduction
chemical_list: D002857:Chromium; C074702:chromium hexavalent ion