Operational parameters affecting the performance of a mediator-less microbial fuel cell

Geun Cheol Gil, In Seop Chang, Byung Hong Kim, Mia Kim, Jae Kyung Jang, Hyung Soo Park, Hyung Joo Kim

Research output: Contribution to journalArticle

724 Citations (Scopus)

Abstract

A mediator-less microbial fuel cell was optimized in terms of various operating conditions. Current generation was dependent on several factors such as pH, resistance, electrolyte used, and dissolved oxygen concentration in the cathode compartment. The highest current was generated at pH 7. Under the operating conditions, the resistance was the rate-determining factor at over 500 Ω. With resistance lower than 500 Ω, proton transfer and dissolved oxygen (DO) supply limited the cathode reaction. A high strength buffer reduced the proton limitation to some extent. The DO concentration was around 6 mg 1-1 at the DO limited condition. The fact that oxygen limitation was observed at high DO concentration is believed to be due to the poor oxygen reducing activity of the electrode used, graphite. The current showed linear relationship with the fuel added at low concentration, and the electronic charge was well correlated with substrate concentration from up to 400 mg 1 -1 of CODcr. The microbial fuel cell might be used as a biochemical oxygen demand (BOD) sensor.

Original languageEnglish
Pages (from-to)327-334
Number of pages8
JournalBiosensors and Bioelectronics
Volume18
Issue number4
DOIs
Publication statusPublished - 1 Apr 2003
Externally publishedYes

Fingerprint

Bioelectric Energy Sources
Microbial fuel cells
Dissolved oxygen
Oxygen
Cathodes
Electrodes
Oxygen supply
Graphite electrodes
Proton transfer
Biochemical oxygen demand
Protons
Electrolytes
Buffers
Graphite
Sensors
Substrates

Keywords

  • Biochemical oxygen demand sensor
  • Electrochemically active bacteria
  • Mediator-less
  • Microbial fuel cell

ASJC Scopus subject areas

  • Biotechnology
  • Analytical Chemistry
  • Electrochemistry

Cite this

Gil, G. C., Chang, I. S., Kim, B. H., Kim, M., Jang, J. K., Park, H. S., & Kim, H. J. (2003). Operational parameters affecting the performance of a mediator-less microbial fuel cell. Biosensors and Bioelectronics, 18(4), 327-334. https://doi.org/10.1016/S0956-5663(02)00110-0

Operational parameters affecting the performance of a mediator-less microbial fuel cell. / Gil, Geun Cheol; Chang, In Seop; Kim, Byung Hong; Kim, Mia; Jang, Jae Kyung; Park, Hyung Soo; Kim, Hyung Joo.

In: Biosensors and Bioelectronics, Vol. 18, No. 4, 01.04.2003, p. 327-334.

Research output: Contribution to journalArticle

Gil, Geun Cheol ; Chang, In Seop ; Kim, Byung Hong ; Kim, Mia ; Jang, Jae Kyung ; Park, Hyung Soo ; Kim, Hyung Joo. / Operational parameters affecting the performance of a mediator-less microbial fuel cell. In: Biosensors and Bioelectronics. 2003 ; Vol. 18, No. 4. pp. 327-334.
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