Factors Governing the Pretreatment Process of Lignocellulosic Biomass in an Acidic Pyrrolidonium Ionic Liquid

文献类型： 外文期刊

第一作者： Hu, Xiao-Mei

作者： Hu, Xiao-Mei;Wang, Fu-Ling;Ma, Hui-Hui;Hu, Bao-Zhong;Zhang, Bi-Xian;Gao, Yun-Fei;Hu, Bao-Zhong

作者机构：

关键词： Ionic liquids;Lignocellulosic Biomass;Pretreatment

期刊名称：BIORESOURCES （ 影响因子：1.614； 五年影响因子：1.923 ）

ISSN： 1930-2126

年卷期： 2016 年 11 卷 4 期

页码：

收录情况： SCI

摘要： Ionic liquid (IL)-assisted pretreatment is an important step in biochemical conversion of lignocellulosic biomass into biofuels. Design for low-cost ILs that efficiently work at a relatively low pretreatment temperature with a short processing time is of great interest. In this work, a functional acidic ionic liquid, 1-H-N-methyl-2-pyrrolidonium chloride ([Hnmp]Cl), was prepared by a simple synthetic procedure in a cost-effective manner and was then investigated for use in the pretreatment of lignocellulosic biomass. Factors including temperature, time, ratio of biomass to ionic liquid, and water content were studied to determine their impact on the pretreatment of lignocellulose; 91.39% of lignin content was recovered when the corn stalk was pretreated by pure [Hnmp]Cl at 100 degrees C for 45 min with a biomass loading of 5%. The highest glucose yield attained was 93.20% and the highest cellobiose yield was 18.76%, when the ratio of biomass to water was kept at 1:4. The pretreatment efficacy was dependent on the pretreatment temperature and processing time, which was more efficient for pure ionic liquid with respect to lignin recovery from lignocelluloses. However, more efficient enzymatic saccharification of cellulose-rich materials was achieved with aqueous ionic liquid.

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