Long-term performance of primary and secondary electroactive biofilms using layered corrugated carbon electrodes

• Main Authors: André eBaudler, Sebastian eRiedl, Uwe eSchröder
• Format: Article
• Language: English
• Published: Frontiers Media S.A. 2014-07-01
• Series: Frontiers in Energy Research
• Subjects: Microbial fuel cell; electroactive bacteria; electroactive biofilm; 3D electrode; layered corrugated carbon
• Online Access: http://journal.frontiersin.org/Journal/10.3389/fenrg.2014.00030/full

The performance of primary and secondary electroactive biofilms grown on layered corrugated carbon electrodes was studied over a period of several months. With an average projected current density of 6.7 mA cm-2 the studied secondary electroactive biofilms outperformed the primary biofilms (3.0 mA cm-2) over the entire experimental period. At the same time both, primary and secondary biofilms, exhibited a constant Coulomb efficiency of about 89 %. <br/>The study further illustrates that three-dimensional electrodes such as layered corrugated carbon (LCC) allow a sustained long-term performance without significant decrease in electrode performance. <br/>