离子液体碱溶液脱除秸秆中木质素

doi:10.16085/j.issn.1000-6613.2017-1908

化工进展 ›› 2018, Vol. 37 ›› Issue (05): 1789-1794.DOI: 10.16085/j.issn.1000-6613.2017-1908

离子液体碱溶液脱除秸秆中木质素

刘程, 刘振, 李龙飞, 张世英, 许爱荣

河南科技大学化工与制药学院, 河南洛阳 471023

收稿日期:2017-09-11 修回日期:2018-01-17 出版日期:2018-05-05 发布日期:2018-05-05
通讯作者: 刘振,副教授,研究方向为传质与分离。
作者简介:刘程(1991-),女,硕士研究生。
基金资助:
国家自然科学基金（21373078）、河南省科技攻关（162102310416）及河南省教育技术装备和实践教育研究项目（GZS297）。

Removal of lignin from corn straw by ionic liquid alkali solution

LIU Cheng, LIU Zhen, LI Longfei, ZHANG Shiying, XU Airong

College of Chemical Engineering & Pharmaceutics, Henan University of Science and Technology, Luoyang 471023, Henan, China

Received:2017-09-11 Revised:2018-01-17 Online:2018-05-05 Published:2018-05-05

摘要/Abstract

摘要： 生物质是来源丰富的可再生资源，去除生物质中的木质素是提高生物质的糖化发酵效率的关键。本文利用含NaOH的离子液体氯化1-烯丙基-3-甲基咪唑（[Amim]Cl）溶液对玉米秸秆进行处理，从反应温度、反应时间和固液比3个方面研究其脱除木质素的效果，采用单因素实验和Box-Behnken中心组合实验对反应条件进行优化，对比分析处理前后的秸秆的组成和结构变化。结果表明：在反应温度86.8℃，反应时间1.48h，固液比1∶9g/mL时，处理后秸秆中纤维素含量达到83.69%，木质素含量为3.29%，木质素脱除率达81.73%，反应温度对纤维素含量影响最显著。本工作可为玉米秸秆的资源化利用提供参考。

关键词: 生物质, 离子液体, 生物分离, 纤维素, 脱木质素, 碱溶液

Abstract: Biomass is a rich source of renewable resources. The saccharification and fermentation efficiency of the biomass can be improved by removing the lignin from the biomass. The temperature,time and solid-liquid ratio were studied by using the 1-allyl-3-methylimidazolium chloride aqueous ionic liquid containing NaOH to treat corn straws. The reaction conditions were optimized by a central composite design. The compositions and structures of the straw before and after the treatment were compared. The experimental results showed that,at the temperature of 86.8℃,time of 1.48h and solid-liquid ratio of 1:9g/mL,the content of cellulose in the straw was 83.69%,the content of lignin was 3.29%,and the removal rate of lignin was 81.73%;the reaction temperature had the most significant effect on the cellulose content. This work provides insights for the utilization of maize straw.

Key words: biomass, ionic liquids, separation, cellulose, delignification, alkali solution

中图分类号:

TQ35

刘程, 刘振, 李龙飞, 张世英, 许爱荣. 离子液体碱溶液脱除秸秆中木质素[J]. 化工进展, 2018, 37(05): 1789-1794.

LIU Cheng, LIU Zhen, LI Longfei, ZHANG Shiying, XU Airong. Removal of lignin from corn straw by ionic liquid alkali solution[J]. Chemical Industry and Engineering Progress, 2018, 37(05): 1789-1794.

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离子液体碱溶液脱除秸秆中木质素

Removal of lignin from corn straw by ionic liquid alkali solution

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