Fuel ethanol production from lignocellulosic biomass: An overview on feedstocks and technological approaches

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• 作者：H. Zabed^a ; ^b ; ^{zabedctgbd@yahoo.com" class="auth_mail" title="E-mail the corresponding author} ; J.N. Sahu^c ; ^d ; ^e ; ^{jay_sahu@yahoo.co.in" class="auth_mail" title="E-mail the corresponding author} ; ^{jayanarayansahu@tdt.edu.vn" class="auth_mail" title="E-mail the corresponding author} ; A.N. Boyce^a ; ^{amru@um.edu.my" class="auth_mail" title="E-mail the corresponding author} ; G. Faruq^f ; ^{faruqwrc@gmail.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Lignocellulosic biomass ; Cellulosic ethanol ; Pretreatment ; Detoxification ; Hydrolysis ; Fermentation
• 刊名：Renewable and Sustainable Energy Reviews
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：66
• 期：Complete
• 页码：751-774
• 全文大小：1932 K

文摘

Bioethanol is one of the most promising and eco-friendly alternatives to fossil fuels, which is produced from renewable sources. Although almost all the current fuel ethanol is generated from edible sources (sugars and starch), lignocellulosic biomass (LCB) has drawn much attention in recent times. However, the conversion efficiency as well as ethanol yield of the biomass differs greatly with respect to the source and nature of LCB, primarily due to the variation in lignocellulosic content. Two major polysaccharides in LCB, namely, cellulose and hemicellulose firmly link to lignin and form a complex lignocellulosic network, which is highly robust and recalcitrant to depolymerization. For this reason, generation of ethanol from LCB requires a complicated conversion process that has made it commercially non-competitive. As attempts to exploit LCBs into commercial ethanol production, recent research efforts have been devoted to the techno-economic improvements of the overall conversion process, in addition to screen out promising feedstocks. This review paper presents an overview on the diversity of biomass, technological approaches and microbial contribution to the conversion of LCB into ethanol.