| abstract |
PROBLEM TO BE SOLVED: To provide a method for efficiently recovering energy from biomass, wherein at least one metal compound selected from the group consisting of iron compound, nickel compound and cobalt compound is added to biomass, Provided is a biomass processing method including a step of subjecting biomass to hydrogen fermentation. In this way, the hydrogen production yield is greatly improved. Moreover, the generation efficiency of methane gas is further increased by subjecting the hydrogen fermentation residue to methane fermentation. [Selection] Figure 2 |