Performance of a Yeast-mediated Biological Fuel Cell
Anuradh Gunawardena, Sandun Fernando, Filip To
AI summary
70% confidenceA yeast-mediated biological fuel cell using Saccharomyces cerevisiae showed improved performance with methylene blue and ferricyanide as electron mediators, achieving a maximum power generation of 146.71±7.7 mW/m³.
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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.
Key findings
- The fuel cell generated a maximum open circuit voltage of 383.6±1.5 mV.
- The maximum efficiency of the fuel cell was 28±1.8 % under 100 kΩ of external load.
- The use of methylene blue and ferricyanide as electron mediators improved the performance of the eukaryotic S. cerevisiae-based fuel cell.
Keywords
Identifiers
- Journal
- International Journal of Molecular Sciences
- Year
- 2008