期刊
BIORESOURCE TECHNOLOGY
卷 182, 期 -, 页码 34-40出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.01.078
关键词
Biosensor; Microbial fuel cell; Electrochemical cell; Dissolved oxygen; Seawater
资金
- National Centre of Excellence in Desalination Australia (NCEDA) - Australian Government through the Water for the Future initiative
- Murdoch University
- AquaMem
- Valoriza Agua (Spain)
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 (R-2 = 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. (c) 2015 Elsevier Ltd. All rights reserved.
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