Microbal Fuel Cells

Microbial fuel cells (MFCs) are bio-electrochemical devices capable to generate power by the activity of certain microorganisms. The traditional MFCs consist of an anode and a cathode chambers, separated by a cation selective membrane. The microbes are located in the anaerobic anode chamber, oxidizing some organic materials and releasing electrons to the anode and protons to the solution (which pass through the membrane towards the cathode). The cathode is sparged with air to provide oxygen for the reactions of electrons, protons and oxygen (forming water).

mucenThe system is completed with a wire between the electrodes, where electric current can be measured.

mucfoA two-chamber microbial fuel cell was designed and built in our laboratory where carbon fibres were used as electrodes and Nafion 0125 protonselective membrane was placed between the two cells. Anaerobic sludge from a local biogas plant and Shewanella putrefaciens as a monoculture were applied in the anode chamber to study the stability of the systems and to measure the electric power generated.
Research Microbal Fuel Cells