Microbial Fuel Cell (IMAGE) Bielefeld University Caption It was constructing a microbial fuel cell that made Bielefeld University's iGEM team so successful in the competition. One potential future use of such fuel cells could be to generate energy from sewage sludge. Credit iGEM-Team Bielefeld Usage Restrictions The image may only be used with appropriate caption or credit. License Licensed content 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.