Pretreatment of Lignocellulosic Biomass for Producing Ethanol

Pretreatment,as an important procedure in the use of lignocellulose biomass to produce ethanol,is influenced mainly by some factors including porosity of fiber cells,fiber crystallinity,pretreatment temperature,reaction time,pH value,concentration of lignocellulose biomass.Currently,the incomplete separation of three main compositions of lignocellulose biomass in pretreatment and the cellulose degradation became the inevitable technical problems.The research on pretreatment in the future should cover the following aspects:effective separation of active fibers with full use of and no damage on hemicellulose,reduce of the formation of degradation products as possible which could inhibit cellulase,reduce of energy consumption and production cost as possible,and production of lignin products with high affiliated values.(Tran.by YUE Yang)