| abstract |
A method for treating biomass, for example, lignocellulosic material, which includes: performing a pre-treatment stage in the biomass and unloading the pretreated biomass; in at least one first enzymatic hydrolysis reactor that produces a liquefaction material, by recirculating at least a portion of the liquefaction material of at least the first reactor to an upstream location of the addition of the enzymes as at least a portion of the refrigerant to Hot pretreated biomass. |