System and method for producing product gas comprising methane

Abstract

A system for producing product gas comprising methane is disclosed, the system comprising a first inlet for receiving a first biomass, the first biomass having a dry matter content of at least 15% by weight of the first biomass, a chemical oxygen demand (COD) of at least 100,000 mg O2/L, and has a content of nitrogen of at least 4 gram per kg, a content of phosphorous of at least 5 gram per kg, and a content of potassium of at least 5 gram per kg, a second inlet for receiving a second biomass, a microbial electrolysis cell reactor for processing the first biomass to produce methane and/or hydrogen gas and a first biomass digestate, an anaerobic digestion reactor for processing the second biomass to produce methane and a second biomass digestate, a first output for discharging the first biomass digestate, a second output for discharging the second biomass digestate. Also, a method for producing product gas comprising methane is disclosed.

Dependencies are inferred from the claim text.