Int. J. Mol. Sci. 2008, 9(10), 1893-1907; doi:10.3390/ijms9101893

Performance of a Yeast-mediated Biological Fuel Cell

1 Department of Biological and Agricultural Engineering, Texas A&M University, College Station, TX 77843, USA 2 Department of Agricultural and Biological Engineering, Mississippi State University, MS 39762, USA
* Author to whom correspondence should be addressed.
Received: 12 June 2008; in revised form: 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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Abstract: 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.
Keywords: Fuel cell; yeast; mediators; bio-catalyst

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MDPI and ACS Style

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

AMA Style

Gunawardena A, Fernando S, To F. Performance of a Yeast-mediated Biological Fuel Cell. International Journal of Molecular Sciences. 2008; 9(10):1893-1907.

Chicago/Turabian Style

Gunawardena, Anuradh; Fernando, Sandun; To, Filip. 2008. "Performance of a Yeast-mediated Biological Fuel Cell." Int. J. Mol. Sci. 9, no. 10: 1893-1907.

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