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Green Pretreatments On Genetically Improved Hybrid Poplar For Ethanol Production

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  2010 Pittsburgh, Pennsylvania, June 20 - June 23, 2010  1008701.(doi:10.13031/2013.29646)
Authors:   Qingzheng Cheng, Adebola B Adebayo, Jingxin Wang, Stephen DiFazio
Keywords:   Biomass, Enzyme, Ethanol production, Glucose sugar, Hybrid poplar, Hydrolysis Pretreatments

Pretreatment is currently the most costly single step (up to 20% of the total cost) and can have significant impacts on the performance and cost of all other sub-sequential steps in the biochemical process of cellulosic ethanol production. This study was to pretreat genetically improved poplar to produce cellulosic ethanol. Juvenile hybrid poplar samples were collected from a plantation on West Virginia University Agronomy Farm. The wood samples were debarked, dried, and milled to particles passing a screen with 40-mesh holes. Then the samples were pretreated using environmentally-friendly methods like hydrogen peroxide exposed in sun and conventional heating system at 80C. The particles were characterized using optical microscopy and the particle size and its distributions were analyzed. ACCELLERASETM 1000 enzyme was used to further evaluate the pretreated samples for sugar production. The sugars produced were evaluated with high-performance liquid chromatography. The results indicated that the pretreatments slightly decreased lignin content.

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