Time-course correlation of biofilm properties and electrochemical performance in single-chamber microbial fuel cells

Zhiyong Ren, Ramaraja P. Ramasamy, Susan Red Cloud-Owen, Hengjing Yan, Matthew M. Mench, John M. Regan

Research output: Contribution to journalArticle

53 Citations (Scopus)

Abstract

The relationship between anode microbial characteristics and electrochemical parameters in microbial fuel cells (MFCs) was analyzed by time-course sampling of parallel single-bottle MFCs operated under identical conditions. While voltage stabilized within 4. days, anode biofilms continued growing during the six-week operation. Viable cell density increased asymptotically, but membrane-compromised cells accumulated steadily from only 9% of total cells on day 3 to 52% at 6. weeks. Electrochemical performance followed the viable cell trend, with a positive correlation for power density and an inverse correlation for anode charge transfer resistance. The biofilm architecture shifted from rod-shaped, dispersed cells to more filamentous structures, with the continuous detection of Geobacter sulfurreducens-like 16S rRNA fragments throughout operation and the emergence of a community member related to a known phenazine-producing Pseudomonas species. A drop in cathode open circuit potential between weeks two and three suggested that uncontrolled biofilm growth on the cathode deleteriously affects system performance.

Original languageEnglish (US)
Pages (from-to)416-421
Number of pages6
JournalBioresource technology
Volume102
Issue number1
DOIs
StatePublished - Jan 1 2011

Fingerprint

Microbial fuel cells
Biofilms
fuel cell
biofilm
Anodes
Cathodes
Bottles
Cell membranes
Charge transfer
Sampling
membrane
Networks (circuits)
sampling
Electric potential

All Science Journal Classification (ASJC) codes

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

Cite this

Ren, Zhiyong ; Ramasamy, Ramaraja P. ; Cloud-Owen, Susan Red ; Yan, Hengjing ; Mench, Matthew M. ; Regan, John M. / Time-course correlation of biofilm properties and electrochemical performance in single-chamber microbial fuel cells. In: Bioresource technology. 2011 ; Vol. 102, No. 1. pp. 416-421.
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Time-course correlation of biofilm properties and electrochemical performance in single-chamber microbial fuel cells. / Ren, Zhiyong; Ramasamy, Ramaraja P.; Cloud-Owen, Susan Red; Yan, Hengjing; Mench, Matthew M.; Regan, John M.

In: Bioresource technology, Vol. 102, No. 1, 01.01.2011, p. 416-421.

Research output: Contribution to journalArticle

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