Fujinaga,A, Taniguchi,S, Takanami,R, Ozaki,H, Tamatani,T, Heya,M, Kishimoto,N
J. Water and Environment Technology, 17(2) 100-108, 2019 Peer-reviewed
As a method for raising the electric power of microbial fuel cells (MFC), we have noticed that repeat of discharge (closed circuit: CC) and charge (open circuit: OC) produces higher electric power than continuous CC. We tried to find the best interval time for the electric power generation of MFC using compost by experiments and model simulations. As a result of the experiment, the interval time of CC and OC, which was less than 60 seconds, produced about 1.2 times-higher electric power output than the continuous CC. The model was based on variation of the concentration of organic compounds, which are consumed by electric current and supplied by diffusion. As a result of the calculation, the effective interval time of CC and OC is less than 15 s.