A two-channel bacteria-based biosensor for water quality monitoring

We created a dual-channel bacteria-based biosensor for sensitive and reliable monitoring of toxic substances in water. We utilized microbial fuel cell (MFC) technology as a biosensor for the detection of water toxicity. A broad range of toxic components can inhibit bacterial metabolic activity, gene...

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Bibliographic Details
Published in2015 IEEE SENSORS pp. 1 - 4
Main Authors Weiyang Yang, Xuejian Wei, Seokheun Choi
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.11.2015
Subjects
Anodes
Biosensors
Cathodes
Fuel cells
microbial fuel cells
Microorganisms
Monitoring
Temperature measurement
Toxic biosensors
water quality monitoring
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Summary:We created a dual-channel bacteria-based biosensor for sensitive and reliable monitoring of toxic substances in water. We utilized microbial fuel cell (MFC) technology as a biosensor for the detection of water toxicity. A broad range of toxic components can inhibit bacterial metabolic activity, generating a distinct change in the current output of the MFC-based biosensor. The biosensor consisted of two 90μL single-chambered MFCs (detection and reference) with air-cathodes, which significantly simplifies the device configuration. The reference channel sensor was to calibrate the system for environmental changes (e.g., temperature, pressure, viscosity, pH, and non-specific binding) that influence the bacterial metabolisms, thus improving the accuracy of the measurement. In addition, the small-scale MFC biosensor produced favorable conditions for high sensitivity by reducing the internal resistance and increasing mass transfer in the micro-sized chamber.
DOI:10.1109/ICSENS.2015.7370674