Using effluents from two-phase anaerobic digestion to feed a methane-producing microbial electrolysis
The integration of a methane-producing microbial electrolysis cell (MEC) into two-phase anaerobic digestion (TP-AD) was investigated, by using effluents from a pilot-scale TP-AD treating the organic fraction of municipal solid waste. The MEC was aimed at exploiting residual COD of TP-AD effluents at the MEC anode in order to support CO2 removal and methane generation at the MEC cathode (fed by a CO2-rich gas phase, simulating a biogas).