TWO-STAGE CHEMI-MECHANICAL PRETREATMENT FOR LIGNOCELLULOSIC BIOMASS

摘要

A process for pretreating lignocellulosic biomass that increases monomericsugaryields in subsequent enzymatic hydrolysis and reduces specific energyconsumptionduring production of the hydrolysable material. The pretreatment includes achemicaltreatment followed by a mechanical size reduction such as a disc refiningstep, andincludes a second chemical treatment, harsher than the first, which mayprecede orfollow the size reduction.