In-line deoxygenation for organic carbon detections in seawater using a marine microbial fuel cell-biosensor
Soon Bee Quek, Liang Cheng, Ralf Cord-Ruwisch
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95% confidenceMFC research focusing on electrode, bacteria, wastewater.
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Abstract
Assimilable organic carbon (AOC) is a key predictor for membrane biofouling in seawater desalination reverse osmosis (SWRO). Microbial fuel cells have been considered as biosensors for the detection of biodegradable organics. However, the presence of dissolved oxygen (DO) is known to completely suppress the signal production (i.e., current) of a typical MFC. This study describes AOC detection in normal oxygenated seawater by coupling an electrochemical cell for DO removal with a MFC-biosensor for AOC detection. The electrochemical deoxygenation for oxygen removal caused no interference in the AOC detection. A linear relationship (R²=0.991) between the AOC concentration and current production from the MFC biosensor was achieved. The coupling of an electrochemical cell with a MFC-biosensor can be effectively used as an online, rapid and inexpensive measure of AOC concentrations and hence as an indicator for biofouling potential of seawater.
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Identifiers
- PubMed
- 25679497
- Journal
- Bioresource Technology
- Year
- 2015