Conversion of rice husk into fermentable sugar and silica using acid-catalyzed ionic liquid pretreatment

被引：0
作者：
YuJie Wang
Jing-yong Liu
Jian Sun
Sumarlin Shangdiar
Kassian T.T. Amesho
Yung-Chang Lin
Yen-Ping Peng
Ken-Lin Chang
机构：
[1] Guangdong University of Technology,School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control
[2] National Sun Yat-Sen University,Institute of Environmental Engineering
[3] Cheng Shiu University,Department of Electrical Engineering
[4] Cheng Shiu University,Center for Environmental Toxin and Emerging
[5] Cheng Shiu University,Contaminant Research
[6] Kaohsiung Medical University,Super Micro Research and Technology Center
来源：
Environmental Science and Pollution Research | 2021年 / 28卷
关键词：
Enzymatic hydrolysis; Biorefinery; Cellulose conversion; Biomass; Composition analysis; Lignin removal;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Rice husk is a bulky byproduct with a high silica content from rice milling. In this study, the application of an acid-catalyzed ionic liquid (IL) pretreatment was studied for processing rice husks with a rugged structure. The pretreatment conditions were 130°C for 30 min with 1.2 wt% HCl. The results of enzymatic hydrolysis demonstrated that cellulose conversion of HCl-BMIMCl-treated at 48 h was increased by 660.05%, 538.81%, and 376.55% compared with the untreated, HCl-treated, and BMIMCl-treated rice husks, respectively. Composition analysis demonstrated that most of the hemicellulose was removed in the acid–IL combined treatment. Moreover, scanning electron microscopy, X-ray diffraction (XRD), and Fourier transform infrared analyses indicated that the crystalline structure and outer silica layer of the rice husks were efficiently broken up. The results revealed that the HCl-catalyzed dissolution is highly favorable for the industrial application of rick husks in the production of fermentable sugar and high-purity silica.
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页码：40715 / 40723
页数：8
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