Bio-Electrochemical Sensor for Fast Analysis of Assimilable Organic Carbon in Seawater
A Microbial Fuel Cell (MFC) based biosensor for the determination of Assimilable Organic Carbon (AOC) inseawater was developed by establishing an anodophilic marine biofilm on the surface of an electrode poised at +250mV (vs Ag/AgCl) rather than the traditionally used potentials of about -300 mV. A...
| Main Authors: | , , |
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| Format: | Journal Article |
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Omics Publishing Group
2014
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| Online Access: | http://hdl.handle.net/20.500.11937/19939 |
| _version_ | 1848750171018493952 |
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| author | Quek, S. Cheng, Liang Cord-Ruwisch, R. |
| author_facet | Quek, S. Cheng, Liang Cord-Ruwisch, R. |
| author_sort | Quek, S. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | A Microbial Fuel Cell (MFC) based biosensor for the determination of Assimilable Organic Carbon (AOC) inseawater was developed by establishing an anodophilic marine biofilm on the surface of an electrode poised at +250mV (vs Ag/AgCl) rather than the traditionally used potentials of about -300 mV. A linear correlation (R2>0.99)between electrochemical signals (peak current) and acetate concentration ranging 10 to 55 μM was achieved.Usingthe positive anodic potential enabled the rapid establishment of the electrochemically active anodophilic biomasswithin a period of less than 8 days, a higher sensitivity (0.017 mA/μM acetate added) and a lower detection limit (2.5μM acetate, 0.16 mg O2/L of Biological Oxygen Demand (BOD)) compared to the negative anodic potential. Further,it was shown that this bio-electrochemical AOC sensor could tolerate the presence of low concentrations ofdissolved oxygen. The established potentiostat controlled MFC biosensor could be used for the purpose of onlinewater quality monitoring for seawater desalination plants prone to biofouling of RO membranes. |
| first_indexed | 2025-11-14T07:32:35Z |
| format | Journal Article |
| id | curtin-20.500.11937-19939 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:32:35Z |
| publishDate | 2014 |
| publisher | Omics Publishing Group |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-199392017-09-13T13:48:57Z Bio-Electrochemical Sensor for Fast Analysis of Assimilable Organic Carbon in Seawater Quek, S. Cheng, Liang Cord-Ruwisch, R. A Microbial Fuel Cell (MFC) based biosensor for the determination of Assimilable Organic Carbon (AOC) inseawater was developed by establishing an anodophilic marine biofilm on the surface of an electrode poised at +250mV (vs Ag/AgCl) rather than the traditionally used potentials of about -300 mV. A linear correlation (R2>0.99)between electrochemical signals (peak current) and acetate concentration ranging 10 to 55 μM was achieved.Usingthe positive anodic potential enabled the rapid establishment of the electrochemically active anodophilic biomasswithin a period of less than 8 days, a higher sensitivity (0.017 mA/μM acetate added) and a lower detection limit (2.5μM acetate, 0.16 mg O2/L of Biological Oxygen Demand (BOD)) compared to the negative anodic potential. Further,it was shown that this bio-electrochemical AOC sensor could tolerate the presence of low concentrations ofdissolved oxygen. The established potentiostat controlled MFC biosensor could be used for the purpose of onlinewater quality monitoring for seawater desalination plants prone to biofouling of RO membranes. 2014 Journal Article http://hdl.handle.net/20.500.11937/19939 10.4172/2155-6210.1000152 Omics Publishing Group fulltext |
| spellingShingle | Quek, S. Cheng, Liang Cord-Ruwisch, R. Bio-Electrochemical Sensor for Fast Analysis of Assimilable Organic Carbon in Seawater |
| title | Bio-Electrochemical Sensor for Fast Analysis of Assimilable Organic Carbon in Seawater |
| title_full | Bio-Electrochemical Sensor for Fast Analysis of Assimilable Organic Carbon in Seawater |
| title_fullStr | Bio-Electrochemical Sensor for Fast Analysis of Assimilable Organic Carbon in Seawater |
| title_full_unstemmed | Bio-Electrochemical Sensor for Fast Analysis of Assimilable Organic Carbon in Seawater |
| title_short | Bio-Electrochemical Sensor for Fast Analysis of Assimilable Organic Carbon in Seawater |
| title_sort | bio-electrochemical sensor for fast analysis of assimilable organic carbon in seawater |
| url | http://hdl.handle.net/20.500.11937/19939 |