AP-32 Cellulosic Ethanol Fibrous Slurry & Biomass Pretreatment ©PSX2010 AP-32 12/0820101210 Application: Cellulosic Pretreatment – Fibrous Slurry Heating Biomass pretreatment is the initial stage of preparing hemicellulosic materials such as corn stover, grass, straw, and wood fiber for ethanol conversion. • Hemicellulose is the part of the carbohydrate portion of plants such as grass, corn stover, straw, trees, etc. Like conventional starch conversion to ethanol, hemicellulosic materials can be converted to sugars and fermented to create ethanol, bio-diesel, or other useful products. • All structural plant matter is a combination of cellulose, hemicellulose, and lignin. Only the direct cellulose is readily convertible to fermentable products. Hemicellulose must

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