title: In-line deoxygenation for organic carbon detections in seawater using a marine microbial fuel cell-biosensor.
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 (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.
authors: School of Engineering and Information Technology, Murdoch University, 90 South Street, Murdoch, Western Australia 6150, Australia. Electronic address: S.Quek@murdoch.edu.au.
authors: Soon Bee
authors: SB
authors: Quek
authors: School of Engineering and Information Technology, Murdoch University, 90 South Street, Murdoch, Western Australia 6150, Australia. Electronic address: L.Cheng@murdoch.edu.au.
authors: Liang
authors: L
authors: Cheng
authors: School of Engineering and Information Technology, Murdoch University, 90 South Street, Murdoch, Western Australia 6150, Australia. Electronic address: R.Cord-Ruwisch@murdoch.edu.au.
authors: Ralf
authors: R
authors: Cord-Ruwisch
mesh_terms: D001674:Bioelectric Energy Sources; D057219:Biofouling; D015374:Biosensing Techniques; D002244:Carbon / Q000032:analysis*; D055664:Electrochemical Techniques / Q000379:methods; D010100:Oxygen; D012623:Seawater / Q000032:analysis* / Q000737:chemistry; D063586:Social Validity, Research; D018508:Water Purification
chemical_list: D002244:Carbon; D010100:Oxygen
keywords: Biosensor; Dissolved oxygen; Electrochemical cell; Microbial fuel cell; Seawater