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Progress in Research of Key Techniques for Ethanol Production from Lignocellulose(PDF)

Chinese Journal of Applied & Environmental Biology[ISSN:1006-687X/CN:51-1482/Q]

2008 06
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Progress in Research of Key Techniques for Ethanol Production from Lignocellulose
LI Ke1 2 JIN Yanling12 GAN Mingzhe1 2 LIU Xiaofeng1 & ZHAO Hai1**
(1Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China)
(2Graduate University of Chinese Academy of Sciences, Beijing 100049, China)
lignocellulose bioethanol pretreatment ionic liquids enzymatic hydrolysis fermentation pentose

Lignocellulose, with cellulose and hemicellulose as its main components, extensively occurs in the world and is a kind of cheap renewable resource for ethanol production. Although the technical route of bioethanol production from lignocellulose is feasible, the industrial application is limited by its practical obstacles. At present, the studies on ethanol production from lignocellulose mainly focus on three critical steps: pretreatment, enzymatic hydrolysis and fermentation. Particularly, the energy cost and the efficiency of the pretreatment, along with the usage of pentose in fermentation become the crucial limitations of this process. Based on reviewing key techniques for bioethanol production from lignocellulose, advantages and disadvantages of various physical, chemical and biological pretreatments, along with the latest methods, were analyzed. Moreover, the characteristics of many kinds of microbes, such as their thermotolerance and ability of pentose’s usage, and the widely-used fermentation modes are also summarized in this review to provide some new ideas for ethanol production from lignocellulose. Tab 5, Ref 86


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