Abstract
Abstract - This study is to investigate the effect of torrefact ion on enzymatic hydrolysis of lignocellulosic biomass for bio-ethanol production. As a pretreatment, the torr efaction of lignocellulosic biomass was conducted in temperature of 250 ∼350℃ in the absence of oxygen. Tween-80, nonionic surfactant, was tested to enhance saccharification efficiency by coping with hy drophobicity resulted from torrefaction. As a result, the glucose production from enzymatic hydrolysis of b iomass pretreated by torrefaction was greater than that obtained from the non-pretreated biomass. Sugar conve rsion was higher when the biomass was saccharified with addition of tween-80. It was found that torre faction can be applied as a preptreatment for lignocellulosic biomass and tween-80 is needed to enhance i ts enzyme saccharification. Key words : lignocellulosic biomass, pretreatment, saccharification, Tween-80, enzymatic hydrolysis † To whom corresponding should be addressed.Professor, Department of Environmental Energy Engineering,The Graduate School of Energy and EnvironmentSeoul National University of Science and TechnologyTel : 02-970-6595 E-mail : daewon@seoultech,ac,kr
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