Improvement of a microbial fuel cell performance as a BOD sensor using respiratory inhibitors

Studies were made to improve the performance of a microbial fuel cell (MFC) as a biochemical oxygen demand (BOD) sensor. The signal from MFCs decreased in the presence of electron acceptors of higher redox potential such as nitrate and oxygen. The addition of azide and cyanide did not change the sig...

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Bibliographic Details
Published in:Biosensors & bioelectronics 2005-03, Vol.20 (9), p.1856-1859
Main Authors: Chang, In Seop, Moon, Hyunsoo, Jang, Jae Kyung, Kim, Byung Hong
Format: Article
Language:English
Subjects:
Biological and medical sciences
Biosensing Techniques - instrumentation
Biosensing Techniques - methods
Biosensor
Biosensors
Biotechnology
BOD
Energy-Generating Resources
Fundamental and applied biological sciences. Psychology
Inhibitor
Methods. Procedures. Technologies
Microbial fuel cell
Oxygen - analysis
Oxygen - metabolism
Oxygen Consumption - drug effects
Oxygen Consumption - physiology
Respiration
Various methods and equipments
Water Microbiology
Water Pollutants, Chemical - analysis
Water Pollutants, Chemical - pharmacology
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Summary:Studies were made to improve the performance of a microbial fuel cell (MFC) as a biochemical oxygen demand (BOD) sensor. The signal from MFCs decreased in the presence of electron acceptors of higher redox potential such as nitrate and oxygen. The addition of azide and cyanide did not change the signal in the absence of the electron acceptors. The respiratory inhibitors eliminated the inhibitory effects of the electron acceptors on the current generation from MFCs. Similar results were obtained using oligotrophic MFCs fed with an environmental sample that contained nitrate. The use of the respiratory inhibitors is therefore recommended for the accurate BOD measurement of environmental samples containing nitrate and/or oxygen with an MFC-type BOD sensor.
ISSN:0956-5663
1873-4235
DOI:10.1016/j.bios.2004.06.003