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In recent years, as a novel mode of converting organic matter into bioelectricity, Microbial fuel cells (MFCs) have gained significant attention. Among effective parameters in MFCs, substrate type and concentration play major role on MFC performance. In this study, a dual chamber MFC was used with a wide range of fructose concentrations: 10, 20 30 and 40 g/l. The MFC was inoculated with Saccharomyces cerevisiae as biocatalyst. A100μm of neutral red as mediator and also 100μm ferricyanide as oxidizer added to anode and cathode chambers, respectively. The MFC generated an open circuit voltage (OCV) of 690, 768, 548 and 507 mV with concentration of fructose from 10 to 40 g.l, respectively. Maximum power density of 32.16, 23.7, 18.9 and 10.47 were obtained with substrate concentration of 10 to 40 g.l, respectively. The maximum value of OCV and power density obtained with 10g.l of carbohydrate. To investigate resistance effect on MFC performance, for each substrate concentration data acquisition system was set at optimum value for the resistance which was resulted by the polarization curve. Then maximum power and optimum current density were recorded.

Bioelectricity Power Generation from Organic Substrate in a Microbial Fuel Cell Using Saccharomyces Cerevisiae as Biocatalysts