Microbial fuel cells technology is most attractive alternative energy source to generate bioelectricity from wide range of substrates by using bio electrogenic microorganisms. It has special interests on supply the energy demands for small devices by using waste materials. In this study a prototype double chamber microbial fuel cell was developed with copper as cathode and anode electrodes and salt bridge as the proton exchange membrane. The performance of microbial fuel cell was tested with the substrates extract from waste vegetables and fruits such as Potato, Wood apple and Mango to generate bioelectricity over a testing period of 20days and without renovation of substrates in the batch mode operation. Results reveal that the average value of open circuit voltage for Potato, Wood apple and Mango are 315,307 and 299 mV respectively. The output voltage depends on reaction of microorganisms, electrode and environmental conditions. The micro-organisms growth and multiplication period, the output voltage is high and the output voltage pattern over the tested period shows good agreement with growth pattern of microorganism.

Microbial fuel cell

Double Chamber

Microorganisms

Electricity