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Int. J. Mol. Sci. 2008, 9(10), 1893-1907;

Performance of a Yeast-mediated Biological Fuel Cell

Department of Biological and Agricultural Engineering, Texas A&M University, College Station, TX 77843, USA
Department of Agricultural and Biological Engineering, Mississippi State University, MS 39762, USA
Author to whom correspondence should be addressed.
Received: 12 June 2008 / Revised: 30 August 2008 / Accepted: 24 September 2008 / Published: 8 October 2008
(This article belongs to the Special Issue Energy Technology for the 21st Century - Materials and Devices)
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Saccharomyces cerevisiae present in common Baker’s yeast was used in a microbial fuel cell in which glucose was the carbon source. Methylene blue was used as the electronophore in the anode compartment, while potassium ferricyanide and methylene blue were tested as electron acceptors in the cathode compartment. Microbes in a mediator-free environment were used as the control. The experiment was performed in both open and closed circuit configurations under different loads ranging from 100 kΩ to 400Ω. The eukaryotic S. cerevisiae-based fuel cell showed improved performance when methylene blue and ferricyanide were used as electron mediators, rendering a maximum power generation of 146.71±7.7 mW/m3. The fuel cell generated a maximum open circuit voltage of 383.6±1.5 mV and recorded a maximum efficiency of 28±1.8 % under 100 kΩ of external load. View Full-Text
Keywords: Fuel cell; yeast; mediators; bio-catalyst Fuel cell; yeast; mediators; bio-catalyst

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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Gunawardena, A.; Fernando, S.; To, F. Performance of a Yeast-mediated Biological Fuel Cell. Int. J. Mol. Sci. 2008, 9, 1893-1907.

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