Enhanced lignin extraction process from steam exploded corn stalk

doi:10.1016/j.seppur.2015.11.036

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	Enhanced lignin extraction process from steam exploded corn stalk
	Wang, Guanhua 1,2; Chen, Hongzhang1
	2016-01-08
发表期刊	SEPARATION AND PURIFICATION TECHNOLOGY
ISSN	1383-5866
卷号	157 期号:JAN 页码:93-101
摘要	In this work, the alkaline extraction processes of lignin from untreated and steam-exploded corn stalk were compared and the enhanced extraction process was investigated by neutral solvent extraction and structural analysis of lignin. It was found that a first order model could readily simulate the lignin extraction from untreated stalk while it was helpless to describe the enhanced process after steam explosion due to the intense dissolution of lignin at the beginning stage of extraction. The lignin extracted by neutral solvent from ball-milled corn stalk and its structural characterization demonstrated that the poor description of extraction process by a first order model was mainly attributed to the considerable depolymerization during steam explosion. Due to the depolymerization of lignin, the alkaline extraction after steam explosion became the direct dissolution of depolymerized lignin and was successfully simulated by a second-order model. Finally, the activation energy of lignin alkali-extraction decreased 37.78% after steam explosion treatment with 1.8 MPa and 5 min, which indicated that milder extraction conditions were available to extract lignin from steam-exploded corn stalk. This study also provides a basic guidance for delignification approaches of lignocelluloses after steam explosion. (C) 2015 Elsevier B.V. All rights reserved.
关键词	Lignin Alkaline Extraction Steam Exploded Corn Stalk Enhanced Kinetics Neutral Solvent Extraction Depolymerization Characterization
文章类型	Article
WOS标题词	Science & Technology ; Technology
DOI	10.1016/j.seppur.2015.11.036
收录类别	SCI
语种	英语
关键词[WOS]	MILLED-WOOD LIGNIN ; DELIGNIFICATION KINETICS ; EXPLOSION ; FRACTIONATION ; SPECTROSCOPY ; CHEMISTRY ; MECHANISM ; BIOFUELS
WOS研究方向	Engineering
WOS类目	Engineering, Chemical
项目资助者	National Basic Research Program of China (973 Project)(2011CB707401) ; National High Technology Research and Development Program of China (863 Program)(2012AA021302)
WOS记录号	WOS:000368868600011
引用统计
文献类型	期刊论文
条目标识符	http://ir.ipe.ac.cn/handle/122111/20589
专题	生化工程国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Wang, Guanhua,Chen, Hongzhang. Enhanced lignin extraction process from steam exploded corn stalk[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2016,157(JAN):93-101.
APA	Wang, Guanhua,&Chen, Hongzhang.(2016).Enhanced lignin extraction process from steam exploded corn stalk.SEPARATION AND PURIFICATION TECHNOLOGY,157(JAN),93-101.
MLA	Wang, Guanhua,et al."Enhanced lignin extraction process from steam exploded corn stalk".SEPARATION AND PURIFICATION TECHNOLOGY 157.JAN(2016):93-101.

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