| Enhanced lignin extraction process from steam exploded corn stalk | |
Wang, Guanhua1,2; Chen, Hongzhang1
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| 2016-01-08 | |
| 发表期刊 | SEPARATION AND PURIFICATION TECHNOLOGY
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| 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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| Enhanced lignin extr（1001KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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