Information about the project content as well as the main results and conclusions
Microbial electrolysis combines classic fermentative methanation to biogas with the concept of power-to-X technology. The result is a hybrid methanation process that can widely be used in sewage treatment plants, agriculture, the food industry and biorefineries. This project showed that an improved methane content in biogas is possible. The methane contents increased from 55-60% to 75-80%. These yields resulted at room temperature, i.e. no mesophilic or thermophilic conditions were necessary and the heating energy could be used elsewhere. The results also showed that the externally supplied power supported the process and that, with optimal process control, the supplied energy was converted into stored energy. The process therefore allows easy storage of sustainably produced energy in biogas.