2-Bromoethanesulfonate degradation in bioelectrochemical systems

被引：32

作者：

Rago, Laura ^{[1
]}

Guerrero, Javier ^{[1
]}

Baeza, Juan A. ^{[1
]}

Guisasola, Albert ^{[1
]}

机构：

[1] Univ Autonoma Barcelona, Escola Engn, Dept Engn Quim, GENOCOV, E-08193 Barcelona, Spain

来源：

BIOELECTROCHEMISTRY | 2015年 / 105卷

关键词：

2-Bromoethanesulfonate (BES); Methane; Methanogenesis inhibition; Microbial fuel cell (MFC); Microbial electrolysis cell (MEC); BIOFILM;

D O I：

10.1016/j.bioelechem.2015.05.001

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

2-Bromoethanesulfonate (BES) is the most reported chemical inhibitor for methanogenesis in laboratory-scale bioelectrochemical systems. However, there is doubt about BES's long-term effectiveness in microbial fuel cells (MFCs). We observed BES degradation in MFCs, whereas not in microbial electrolysis cells (MECs). Our results suggest that BES degradation is only possible under aerobic conditions (such as in MFCs) when some oxygen diffuses through the cathode. Experimental BES degradation was linked to the release of bromide (Br-) into the medium, with an average recovery of 67 +/- 16%. Microbial analysis of the cathodic biomass distribution revealed the presence of Pseudomonas and Alcaligenes genera, which are able to use sulfonates as carbon or sulfur sources under aerobic conditions. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：44 / 49

页数：6

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