Pretreatment technologies for an efficient bioethanol production process based on enzymatic hydrolysis: A review

被引:2720
作者
Alvira, P. [1 ]
Tomas-Pejo, E. [1 ]
Ballesteros, M. [1 ]
Negro, M. J. [1 ]
机构
[1] CIEMAT, Renewable Energy Div, Biomass Unit, E-28040 Madrid, Spain
关键词
Pretreatment; Bioethanol; Enzymatic hydrolysis; LIQUID HOT-WATER; WET OXIDATION PRETREATMENT; DILUTE-ACID PRETREATMENT; SUGAR-CANE BAGASSE; LIGNOCELLULOSIC BIOMASS; STEAM PRETREATMENT; ETHANOL-PRODUCTION; WHEAT-STRAW; CORN STOVER; SIMULTANEOUS SACCHARIFICATION;
D O I
10.1016/j.biortech.2009.11.093
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
Biofuel produced from lignocellulosic materials, so-called second generation bioethanol shows energetic, economic and environmental advantages in comparison to bioethanol from starch or sugar. However, physical and chemical barriers caused by the close association of the main components of lignocellulosic biomass, hinder the hydrolysis of cellulose and hemicellulose to fermentable sugars. The main goal of pretreatment is to increase the enzyme accessibility improving digestibility of cellulose. Each pretreatment has a specific effect on the cellulose, hemicellulose and lignin fraction thus, different pretreatment methods and conditions should be chosen according to the process configuration selected for the subsequent hydrolysis and fermentation steps. This paper reviews the most interesting technologies for ethanol production from lignocellulose and it points out several key properties that should be targeted for low-cost and advanced pretreatment processes. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码:4851 / 4861
页数:11
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