| 主权项 |
1. A treatment method for biomass, which is a pretreatment method comprising continuously performing hydrothermal treatment through use of a screw extruder to produce from cellulose-containing biomass serving as a raw material a biomass composition for saccharification containing only a small quantity of furfural as being a fermentation-inhibiting component,
the treatment method sequentially comprising: pulverizing, in a pulverization section of the screw extruder, the cellulose-containing biomass serving as a raw material so as to have a maximum grain size of 1,000 μm or less and adjusting a water content ratio thereof to from 30% to 80%; performing hydrothermal treatment in a heating section of the screw extruder, in which an element including a seal ring and at least one set of a kneading disc and/or a left-hand screw is arranged immediately upstream of the seal ring, at a temperature of from 150° C. to 200° C. for 0.1 minute to 15 minutes while performing kneading pulverization having a grinding effect; and cooling, in a cooling section of the screw extruder downstream of the heating section, a treated product to 100° C. or less to recover the treated product of the cellulose-containing biomass. |
