Fig. 1

Schematic diagram of a the integrated aerobic-MFC and anaerobic-MFC system, and b electrode arrangement, not drawn to scale. M motor, R reactor, R1 filtration, R2 sedimentation, R3 anaerobic, R4 aerobic (MBBR), R5 MFC, R6 methanogenic, R7 MFC, R8 methanogenic, and R9 adsorpton column. The cathode section is not shown to simplify the diagram