Combining microbial cultures for efficient production of electricity from butyrate in a microbial electrochemical cell

Joseph F. Miceli, Ines Garcia-Peña, Prathap Parameswaran, Cesar Torres, Rosa Krajmalnik-Brown

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Butyrate is an important product of anaerobic fermentation; however, it is not directly used by characterized strains of the highly efficient anode respiring bacteria (ARB) Geobacter sulfurreducens in microbial electrochemical cells. By combining a butyrate-oxidizing community with a Geobacter rich culture, we generated a microbial community which outperformed many naturally derived communities found in the literature for current production from butyrate and rivaled the highest performing natural cultures in terms of current density (~11A/m2) and Coulombic efficiency (~70%). Microbial community analyses support the shift in the microbial community from one lacking efficient ARB in the marine hydrothermal vent community to a community consisting of ~80% Geobacter in the anode biofilm. This demonstrates the successful production and adaptation of a novel microbial culture for generating electrical current from butyrate with high current density and high Coulombic efficiency, by combining two mixed microbial cultures containing complementing biochemical pathways.

Original languageEnglish (US)
Pages (from-to)169-174
Number of pages6
JournalBioresource Technology
Volume169
DOIs
StatePublished - 2014

Fingerprint

Electrochemical cells
Butyrates
electricity
Anodes
Electricity
microbial community
Bacteria
Current density
hydrothermal vent community
Vents
Biofilms
Fermentation
bacterium
density current
fermentation
biofilm

Keywords

  • Fermentation
  • Geobacter
  • Microbial fuel cell
  • Short chain fatty acids
  • Syntrophy

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Waste Management and Disposal

Cite this

Combining microbial cultures for efficient production of electricity from butyrate in a microbial electrochemical cell. / Miceli, Joseph F.; Garcia-Peña, Ines; Parameswaran, Prathap; Torres, Cesar; Krajmalnik-Brown, Rosa.

In: Bioresource Technology, Vol. 169, 2014, p. 169-174.

Research output: Contribution to journalArticle

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