Abstract
Microbial fuel cells (MFCs) are bioreactors that convert energy in the chemical bonds of organic compounds into electrical energy through catalytic activity of electrogenic micro-organisms, under anaerobic conditions. In this study, a stacked MFC consisting of 4 single MFCs was assembled using microbial sludge and connected in series. 1.0 V of electricity was generated in each cell and as much as 4.0V of electricity was generated in the four stacked cells. The stacked MFC was used to power a flashlight and a 4.0-volt LED light bulb. The electricity generated decreased with time due to a decrease in microbial activity and increased with increase in the number of stacked cells.
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