Long-term evaluation of a 10-liter serpentine-type microbial fuel cell stack treating brewery wastewater

► A 10-liter serpentine-type microbial fuel cell (MFC) stack. ► The performance of the stack was evaluated over 180 days. ► The series stack produced an open circuit voltage of 23.0 V and a maximum power density of 4.1 W/m3. ► The stack achieved a removal efficiencies of both COD and NH4+-N of >85%. ► Cathodes and not anodes were responsible for the deterioration in performance of MFC stack.