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Enhanced lignin extraction process from steam exploded corn stalk
Wang, Guanhua1,2; Chen, Hongzhang1
2016-01-08
Source PublicationSEPARATION AND PURIFICATION TECHNOLOGY
ISSN1383-5866
Volume157Issue:JANPages:93-101
AbstractIn 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.
KeywordLignin Alkaline Extraction Steam Exploded Corn Stalk Enhanced Kinetics Neutral Solvent Extraction Depolymerization Characterization
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.seppur.2015.11.036
Indexed BySCI
Language英语
WOS KeywordMILLED-WOOD LIGNIN ; DELIGNIFICATION KINETICS ; EXPLOSION ; FRACTIONATION ; SPECTROSCOPY ; CHEMISTRY ; MECHANISM ; BIOFUELS
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Basic Research Program of China (973 Project)(2011CB707401) ; National High Technology Research and Development Program of China (863 Program)(2012AA021302)
WOS IDWOS:000368868600011
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/20589
Collection生化工程国家重点实验室
Affiliation1.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
Recommended Citation
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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