Microbial Fuel Cell (image) Arizona State University Caption This graphic shows the basic setup for a microbial fuel cell. An MFC consists of an anode, a cathode, a proton or cation exchange membrane and an electrical circuit. Anode respiring bacteria cling to the anode of the MFC. In the course of their metabolic activity, these bacteria strip electrons from organic waste. The electrons then flow through a circuit to the cathode, producing electricity in the process, in addition to CO2 and water. Hydroxide or OH- ions are transported from the cathode into the surrounding electrolyte. Credit The Biodesign Institute at Arizona State University Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.