Microbial fuel cell-based biosensor for toxic carbon monoxide monitoring

TALANTA

卷:186

Article

Zhou, Shaofeng^1,2  Huang, Shaobin¹  Li, Yi¹  Zhao, Nannan¹  Li, Han¹  Angelidaki, Irini²  Zhang, Yifeng² 

[1] South China Univ Technol, Sch Environm & Energy, Higher Educ Mega Ctr, Guangzhou 510006, Guangdong, Peoples R China

[2] Tech Univ Denmark, Dept Environm Engn, DK-2800 Lyngby, Denmark

关键词: Microbial fuel cells;    Carbon monoxide;    Biosensor;    Toxicity;    Gas phase;    Voltage;   

DOI  :  10.1016/j.talanta.2018.04.084

来源: Elsevier

【 摘 要 】

This study presents an innovative microbial fuel cell-based biosensor for carbon monoxide (CO) monitoring. The hypothesis for the function of the biosensor is that CO inhibits bacterial activity in the anode and thereby reduces electricity production. A mature electrochemically active biofilm on the anode was exposed to CO gas at varied concentrations. A proportional linear relationship (R-2 = 0.987) between CO concentration and voltage drop (0.8 to 24 mV) in the range of 10% and 70% of CO concentration was observed. Notably, no further decrease of voltage output was observed by with further increasing CO concentration over 70%. Besides, the response time of the biosensor was 1 h. The compact design and simple operation of the biosensor makes it easy to be integrated in existing CO-based industrial facilities either as a forewarning sensor for CO toxicity or even as an individual on-line monitoring device.

【 授权许可】

Free