Microbial fuel cell-based biosensor for toxic carbon monoxide monitoring

Shaofeng Zhou, Shaobin Huang, Yi Li, Nannan Zhao, Han Li, Irini Angelidaki, Yifeng Zhang*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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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 (R2 = 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.
Original languageEnglish
Pages (from-to)368-371
Publication statusPublished - 2018


  • Microbial fuel cells
  • Carbon monoxide
  • Biosensor
  • Toxicity
  • Gas phase
  • Voltage


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