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Utilization of industrial fiber waste corn cob and cellulase production of fuel ethanol

Author: HuoZhiMei
Tutor: FangZuo
School: Shandong University
Course: Biological Engineering
Keywords: lignocellulose ethanol simultaneous saccharification and fermentation (SSF) cellulase production
CLC: TQ223.122
Type: Master's thesis
Year: 2011
Downloads: 133
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Abstract


Lignocellulosic biomass is the most abundant and renewable material in the world. Ethanol production from lignocellulosic material is a potential and feasible method because there are many advantages such as achieving meaningful energy security, balance of trade, rural employment benefits, and others. Lignocellulosic ethanol production included pretreatment, enzymatic hydrolysis and ethanol fermentation from sugar.In this paper, we used the simultaneous saccharification and fermentation (SSF) approach which converts lignocellulose into ethanol by combining sacchrification with fermentation in a simultaneous manner. For increasing enzymatic efficiency and the final ethanol concentration, our work was focused on the followings:1. Firstly, we optimized the method for determining the content of hemicellulose, cellulose and lignin with neutral detergent treatment and acidic detergent treatment with 72% sulphuric acid.2. Secondly, cellulase production was improved with optimizing the pre-culture and innoculation conditions.3. Futhermore, the conversion efficiency and the ethanol yield from corncob residue (CCR) were increased with optimizing the SSF process, such as fermentation temperature, yeast innoculation amount, the ratio of substrate etc.

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CLC: > Industrial Technology > Chemical Industry > Basic Organic Chemistry Industry > The production of aliphatic compounds ( acyclic compounds) > Aliphatic alcohols (alcohols, hydroxy compounds) and its derivatives > Aliphatic alcohol > Fatty Alcohols > Ethanol ( alcohol )
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