Nitrobenzene Removal in Bioelectrochemical Systems

Mu, Yang, Rozendal, Rene A., Rabaey, Korneel and Keller, Jurg (2009) Nitrobenzene Removal in Bioelectrochemical Systems. Environmental Science and Technology, 43 22: 8690-8695. doi:10.1021/es9020266

Author Mu, Yang
Rozendal, Rene A.
Rabaey, Korneel
Keller, Jurg
Title Nitrobenzene Removal in Bioelectrochemical Systems
Journal name Environmental Science and Technology   Check publisher's open access policy
ISSN 0013-936X
Publication date 2009-11
Year available 2009
Sub-type Article (original research)
DOI 10.1021/es9020266
Volume 43
Issue 22
Start page 8690
End page 8695
Total pages 6
Editor Jerald Schnoor
Place of publication Washington, D.C., U.S.
Publisher American Chemical Society
Collection year 2010
Language eng
Subject C1
Formatted abstract
Nitrobenzene occurs as a pollutant in wastewaters originating from numerous industrial and agricultural activities. It needs to be removed prior to discharge to sewage treatment works because of its high toxicity and persistence. In this study, we investigated the use of a bioelectrochemical system (BES) to remove nitrobenzene at a cathode coupled to microbial oxidation of acetate at an anode. Effective removal of nitrobenzene at rates up to 1.29 ± 0.04 mol m−3 TCC d−1 (total cathodic compartment, TCC) was achieved with concomitant energy recovery. Correspondingly, the formation rate for the reduction product aniline was 1.14 ± 0.03 mol m−3 TCC d−1. Nitrobenzene removal and aniline formation rates were significantly enhanced when the BES was supplied with power, reaching 8.57 ± 0.03 and 6.68 ± 0.03 mol m−3 TCC d−1, respectively, at an energy consumption of 17.06 ± 0.16 W m−3 TCC (current density at 59.5 A m−3 TCC). Compared to those of conventional anaerobic biological methods for nitrobenzene removal, the required dosage of organic cosubstrate was significantly reduced in this system. Although aniline was always identified as the major product of nitrobenzene reduction at the cathode of BES in this study, the Coulombic efficiencies of nitrobenzene removal and aniline formation were dependent on the current density of the BES.
Q-Index Code C1
Q-Index Status Confirmed Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
Advanced Water Management Centre Publications
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Citation counts: TR Web of Science Citation Count  Cited 86 times in Thomson Reuters Web of Science Article | Citations
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Created: Sun, 22 Nov 2009, 00:05:34 EST