Novel method for screening microbes for application in microbial fuel cell

Attila Szöllosi, Judit M. Rezessy-Szabó, Ágoston Hoschke, Quang D. Nguyen

Research output: Contribution to journalArticle

13 Citations (Scopus)


The ability to produce and to transport exo-electrons by microbes either to external acceptors or to electrodes are reported in our study. All investigated microorganisms (exception of Lactobacillus plantarum) exhibited strong iron-reducing capabilities in the absence of mediator meaning production and secretion of exo-electrons to the growth medium. L. plantarum, Saccharomyces cerevisiae and Escherichia coli need an electron shuttle molecule to reduce Fe3+ ion. Significant correlation was observed between growth and iron-reducing capacity, as well as between initial cell counts and iron-reducing capacity. Changes of bio-current generated in MFC and iron-reduction were experimentally monitored, and a mathematical model was established by regression analysis. Based on these results, a novel and rapid screening method was developed for the selection of microorganisms for potential application in MFC. The method is based on the measurement of absorbance of bacterial and yeast cultures at 460nm, providing a robust and high sample throughput approach.

Original languageEnglish
Pages (from-to)123-127
Number of pages5
JournalBioresource Technology
Publication statusPublished - Mar 1 2015


  • Bio-electricity
  • Electron transfer
  • Iron-reduction
  • Microbial fuel cell
  • Screening method

ASJC Scopus subject areas

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

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