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HOME > J. Microbiol > Volume 50(4); 2012 > Article
Research Support, Non-U.S. Gov't
Thionine Increases Electricity Generation from Microbial Fuel Cell Using Saccharomyces cerevisiae and Exoelectrogenic Mixed Culture
Mostafa Rahimnejad 1, Ghasem Darzi Najafpour 1, Ali Asghar Ghoreyshi 1, Farid Talebnia 1, Giuliano C. Premier 2, Gholamreza Bakeri 1, Jung Rae Kim 2, Sang-Eun Oh 3
Journal of Microbiology 2012;50(4):575-580.
DOI: https://doi.org/10.1007/s12275-012-2135-0
Published online: August 25, 2012
1Biotechnology Research Lab., Faculty of Chemical Engineering, Noshirvani University, Babol, Iran, 2Sustainable Environment Research Centre (SERC), Faculty of Advanced Technology, University of Glamorgan, Pontypridd, CF37 1DL, United Kingdom, 3Department of Biological Environment, Kangwon National University, Chuncheon 200-701, Republic of Korea
Corresponding author:  Jung Rae Kim , Tel: +44-1443-654387, 
Sang-Eun Oh , Tel: +44-1443-654387, 
Received: 12 March 2012   • Accepted: 13 June 2012
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Abstract

Microbial fuel cells (MFCs) have been shown to be capable of clean energy production through the oxidation of biodegradable organic waste using various bacterial species as biocatalysts. In this study we found Saccharomyces cerevisiae, previously known electrochemcially inactive or less active species, can be acclimated with an electron mediator thionine for electrogenic biofilm formation in MFC, and electricity production is improved with facilitation of electron transfer. Power generation of MFC was also significantly increased by thionine with both aerated and non-aerated cathode. With electrochemically active biofilm enriched with swine wastewater, MFC power increased more significantly by addition of thionine. The optimum mediator concentration was 500 mM of thionine with S. cerevisae in MFC with the maximum voltage and current generation in the microbial fuel cell were 420 mV and 700 mA/m2, respectively. Cyclic voltametry shows that thionine improves oxidizing and reducing capability in both pure culture and acclimated biofilm as compared to non-mediated cell. The results obtained indicated that thionine has great potential to enhance power generation from unmediated yeast or electrochemically active biofilm in MFC.

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    Thionine Increases Electricity Generation from Microbial Fuel Cell Using Saccharomyces cerevisiae and Exoelectrogenic Mixed Culture
    J. Microbiol. 2012;50(4):575-580.   Published online August 25, 2012
    DOI: https://doi.org/10.1007/s12275-012-2135-0
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