Enhanced effects of ionic liquid pretreatment on rice straw by instant catapult steam explosion

QIN Jincheng; HAO Xuemi; LIU Liyang; LIU Chenguang; BAI Fengwu

doi:10.11949/j.issn.0438-1157.20150151

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Enhanced effects of ionic liquid pretreatment on rice straw by instant catapult steam explosion

更新时间：2025-12-10

- Enhanced effects of ionic liquid pretreatment on rice straw by instant catapult steam explosion
- CIESC Journal Issue S1, Pages: 302-307(2015)
- 作者机构：
  
  大连理工大学生命科学与技术学院,辽宁,大连,116024
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20150151
  CLC： Q352.78
- Online First：30 June 2015，
  
  Published：30 June 2015
- 稿件说明：
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QIN Jincheng, HAO Xuemi, LIU Liyang, et al. Enhanced effects of ionic liquid pretreatment on rice straw by instant catapult steam explosion[J]. CIESC Journal, 2015, (S1): 302-307.
DOI：

QIN Jincheng, HAO Xuemi, LIU Liyang, et al. Enhanced effects of ionic liquid pretreatment on rice straw by instant catapult steam explosion[J]. CIESC Journal, 2015, (S1): 302-307. DOI： 10.11949/j.issn.0438-1157.20150151.

摘要

选取具有不同组分分离效果的离子液体1-乙基-3-甲基咪唑醋酸盐([Emim]Ac)和1-乙基-3-甲基咪唑氯盐([Emim]Cl)

并联用瞬间弹射蒸汽爆破(instant catapult steam explosion

ICSE)对水稻秸秆进行预处理。离子液体导致了组分的重排

使纤维素更多地暴露于物料表面

同时减弱了木质素对纤维素紧密交联的程度。ICSE的使用提升了离子液体的预处理效果

酶解糖收率比单纯使用离子液体升高了14.83%([Emim]Ac)和13.14%([Emim]Cl)

其中ICSE联用[Emim]Ac的糖收率最高达97.00%。采用扫描电镜(SEM)和热重分析仪(TGA)进行物料结构分析

证实了ICSE联用离子液体有助于破坏物料的致密结构

增加无定形区

从而提高酶解糖收率。

Abstract

In this study

two kinds of ionic liquid

including 1-ethyl-3-methylimidazolium acetate and 1-ethyl-3-methylimidazolium chloride were used to pretreat rice straw with instant catapult steam explosion (ICSE). The rearrangement of components were caused by ionic liquid pretreatment

which made more cellulose exposed at the surface of rice straw and weakened the cross-link between lignin and cellulose. Through enzymatic hydrolysis analysis

ICSE enhanced the effects of ionic liquid pretreatment by improving the sugar yield. Compared with the sugar yield as using ionic liquid alone

the sugar yield as combination of ICSE and ionic liquid increased by 14.83% ([Emim]Ac) and 13.14% ([Emim]Cl). The highest value reached 97.00% under the pretreatment by ICSE combine with [Emim]Ac. The structural changes were also analyzed by scanning electron microscope (SEM) and thermo gravimetric analysis (TGA). The pretreated materials became more porous with larger amorphous region

and consequently the sugar yield raised.

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