Improving startup performance with carbon mesh anodes in separator electrode assembly microbial fuel cells

Fang Zhang, Xue Xia, Yong Luo, Dan Sun, Douglas F. Call, Bruce Ernest Logan

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

In a separator electrode assembly microbial fuel cell, oxygen crossover from the cathode inhibits current generation by exoelectrogenic bacteria, resulting in poor reactor startup and performance. To determine the best approach for improving startup performance, the effect of acclimation to a low set potential (-0.2V, versus standard hydrogen electrode) was compared to startup at a higher potential (+0.2V) or no set potential, and inoculation with wastewater or pre-acclimated cultures. Anodes acclimated to -0.2V produced the highest power of 1330±60mWm-2 for these different anode conditions, but unacclimated wastewater inocula produced inconsistent results despite the use of this set potential. By inoculating reactors with transferred cell suspensions, however, startup time was reduced and high power was consistently produced. These results show that pre-acclimation at -0.2V consistently improves power production compared to use of a more positive potential or the lack of a set potential.

Original languageEnglish (US)
Pages (from-to)74-81
Number of pages8
JournalBioresource technology
Volume133
DOIs
StatePublished - Jan 1 2013

Fingerprint

Microbial fuel cells
Plant startup
fuel cell
Separators
Reactor startup
Anodes
electrode
Wastewater
Carbon
acclimation
Electrodes
carbon
wastewater
Hydrogen
Suspensions
Bacteria
Cathodes
Oxygen
inoculation
hydrogen

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

Cite this

Zhang, Fang ; Xia, Xue ; Luo, Yong ; Sun, Dan ; Call, Douglas F. ; Logan, Bruce Ernest. / Improving startup performance with carbon mesh anodes in separator electrode assembly microbial fuel cells. In: Bioresource technology. 2013 ; Vol. 133. pp. 74-81.
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Improving startup performance with carbon mesh anodes in separator electrode assembly microbial fuel cells. / Zhang, Fang; Xia, Xue; Luo, Yong; Sun, Dan; Call, Douglas F.; Logan, Bruce Ernest.

In: Bioresource technology, Vol. 133, 01.01.2013, p. 74-81.

Research output: Contribution to journalArticle

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