期刊
INDUSTRIAL CROPS AND PRODUCTS
卷 106, 期 -, 页码 48-58出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.indcrop.2016.08.050
关键词
Elephant grass; Pretreatment; Acid impregnation; Steam explosion; Enzymatic hydrolysis; Structural analysis
资金
- Marie Curie Initial Network (ITN), (RENESENG) [607415]
In the present study, an acid mediated steam explosion process was evaluated for pretreatment of elephant grass biomass in a bench scale reactor. Different combinations of H2SO4 concentration, reaction time and temperature (leading to different values of combined severity factor - CSF) were used for biomass pretreatment, and the impact of the resultant pretreatment conditions on biomass composition, structure and enzymatic hydrolysis was assessed. The optimal pretreatment conditions consisted in performing the steam explosion at 161 degrees C during 11.5 min, and using the biomass impregnated with 0.5% H2SO4 (CSF= 1.42). Under these conditions, a pretreated solid containing 52.13% (w/w) cellulose and 31.00% (w/w) lignin was obtained. The modifications in the biomass structure resulting from the different pretreatment conditions were evaluated by scanning electron microscopy, thermogravimetric analysis and nuclear magnetic resonance spectroscopy analysis. Enzymatic hydrolysis of the pretreated material resulted in a cellulose saccharification yield of 55%. These results allow a better understanding about the pretreatment and enzymatic saccharification of elephant grass biomass and also reveal a great potential of this raw material for use in a biorefinery. (c) 2016 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据