A defined co-culture of geobacter sulfurreducens and escherichia coli in a membrane-less microbial fuel cell

N. Bourdakos, E. Marsili, R. Mahadevan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Wastewater-fed microbial fuel cells (MFCs) are a promising technology to treat low-organic carbon wastewater and recover part of the chemical energy in wastewater as electrical power. Defined co-culture MFCs provide a detailed understanding of the interactions between electrochemically active and fermentative microorganisms such interactions. We characterize the extracellular metabolites in laboratory-scale membrane-less MFCs inoculated with Geobacter sulfurreducens and Escherichia coli co-culture and compare them with pure culture MFCs. G. sulfurreducens MFCs have a power output of 128 mW m-2, compared to 63 mW m-2 from the co-culture MFCs. Succinate production in co-culture MFCs decreases current production by G. sulfurreducens and its removal is responsible for the increased current density in the late co-culture MFCs. Co-culture MFCs provide clear insights into metabolic interactions among bacteria.

Original languageEnglish
Title of host publicationEFC 2013 - Proceedings of the 5th European Fuel Cell Piero Lunghi Conference
EditorsViviana Cigolotti, Chiara Barchiesi, Michela Chianella
PublisherENEA
Pages401-402
Number of pages2
ISBN (Electronic)9788882862978
Publication statusPublished - 2013
Externally publishedYes
Event5th European Fuel Cell Piero Lunghi Conference and Exhibition, EFC 2013 - Rome, Italy
Duration: Dec 11 2013Dec 13 2013

Publication series

NameEFC 2013 - Proceedings of the 5th European Fuel Cell Piero Lunghi Conference

Conference

Conference5th European Fuel Cell Piero Lunghi Conference and Exhibition, EFC 2013
CountryItaly
CityRome
Period12/11/1312/13/13

Keywords

  • Co-culture MFC
  • Escherichia coli
  • Geobacter sulfurreducens

ASJC Scopus subject areas

  • Fuel Technology

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