Bioanode as a limiting factor to biocathode performance in microbial electrolysis cells

Swee Su Lim, Eileen Hao Yu, Wan Ramli Wan Daud, Byung Hong Kim, Keith Scott

Research output: Research - peer-reviewArticle

  • 1 Citations

Abstract

The bioanode is important for a microbial electrolysis cell (MEC) and its robustness to maintain its catalytic activity affects the performance of the whole system. Bioanodes enriched at a potential of +0.2 V (vs. standard hydrogen electrode) were able to sustain their oxidation activity when the anode potential was varied from −0.3 up to +1.0 V. Chronoamperometric test revealed that the bioanode produced peak current density of 0.36 A/m2 and 0.37 A/m2 at applied potential 0 and +0.6 V, respectively. Meanwhile hydrogen production at the biocathode was proportional to the applied potential, in the range from −0.5 to −1.0 V. The highest production rate was 7.4 L H2/(m2 cathode area)/day at −1.0 V cathode potential. A limited current output at the bioanode could halt the biocathode capability to generate hydrogen. Therefore maximum applied potential that can be applied to the biocathode was calculated as −0.84 V without overloading the bioanode.

LanguageEnglish
Pages313-324
Number of pages12
JournalBioresource Technology
Volume238
DOIs
StatePublished - 1 Aug 2017

Fingerprint

Regenerative fuel cells
Hydrogen
Cathodes
limiting factor
electrokinesis
hydrogen
Hydrogen production
Catalyst activity
Anodes
Current density
Oxidation
Electrodes
density current
electrode
oxidation
rate
test

Keywords

  • Applied potential
  • Bioanode
  • Biocathode
  • Biological microbial electrolysis cell
  • Limiting factor

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Waste Management and Disposal

Cite this

Bioanode as a limiting factor to biocathode performance in microbial electrolysis cells. / Lim, Swee Su; Yu, Eileen Hao; Daud, Wan Ramli Wan; Kim, Byung Hong; Scott, Keith.

In: Bioresource Technology, Vol. 238, 01.08.2017, p. 313-324.

Research output: Research - peer-reviewArticle

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