Studies on pretreatment of glycyrrhiza residue with deep eutectic solvents

被引：0
|
作者：
Chen X. [1 ]
Wang F. [1 ,2 ]
Wang Y. [1 ]
Yu Q. [3 ]
Wang Z. [1 ]
Yuan Z. [1 ]
机构：
[1] Guangzhou Institute of Energy Conversion, Chinese Academy of Science, CAS Key Laboratory of Renewable Energy, Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou
[2] University of Chinese Academy of Sciences, Beijing
[3] Institute of Biomass Engineering, Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture and Rural Affairs, Guangdong Engineering Technology Research Center of Agricultural and Forestry Biomass, South China Agricultural Universit
来源：
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2022年 / 43卷 / 12期
关键词：
Deep eutectic solvent; Delignification; Glycyrrhiza residue; Lignocellulosic biomass; Physicochemical characteristics; Waste utilization;
D O I：
10.19912/j.0254-0096.tynxb.2021-0673
中图分类号：
学科分类号：
摘要：
The solvent pretreatment of glycyrrhiza residue using deep eutectic solvents(DESs) as solvents with nine choline chloride(ChCl) as hydrogen bond donors was conducted. The effects of DESs compositions and treating conditions on chemical compositions and physical morphology were analyzed. Among alcohol DESs, glycol/ChCl shows maximal lignin removal rate of 38.33% under the pretreatment conditions of 150 ℃, 1 h. For the acidic DESs, maximal lignin removal rate of 40.87% with cellulose recovery of 95.28% is observed after the treatment by lactic acid/ChCl under the conditions of 100 ℃, 1 h. Among the basic DESs, the maximal lignin removal rate of 73.02% is achieved by ethanolamine/ChCl under the conditions of 150 ℃, 4 h. Physical characteristics analysis indicates that DES destroys intramolecular hydrogen bonds of cellulose, breaks the ester bonds between carbohydrate and lignin, increases the accessible surface area of cellulose, which is conducive for subsequent utilization. © 2022, Solar Energy Periodical Office Co., Ltd. All right reserved.
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页码：446 / 452
页数：6
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