Achieving efficient pretreatment of corn straw at elevated temperatures via constraining cellulose degradation
文献类型：期刊论文
| 作者 | Yang, Jiming2; Wang, Shulin2; Bai, Fudong3; Lu, Xingmei1; He, Wei2; Fang, Zheng2; Zhu, Ning2; Guo, Kai2,4 |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2023-02-15 |
| 卷号 | 454页码:12 |
| ISSN号 | 1385-8947 |
| 关键词 | Ionic liquids Lignocellulose Pretreatment Delignification Enzymatic saccharification |
| DOI | 10.1016/j.cej.2022.140480 |
| 英文摘要 | Greatly reducing the cellulose crystallinity and lignin content of lignocellulose can substantially improve the enzymatic hydrolysis efficiency, dramatically reducing the enzyme dosage; however, it is difficult to be simultaneously achieved. A solution was put forward - biomass pretreatment was carried out with the binary system consisted of 1-n-butyl-3-methylimidazole chloride (BMIMCl) and arginine (Arg) at temperatures higher than the glass transition temperature of lignin (Tg-lignin). The cellulose crystallinity decreased because of hydrogen bonding with BMIMCl. Delignification was promoted via raising the temperature higher than the Tg-lignin, while cellulose degradation was constrained by Arg. The delignification rate reached 90.36 %. The yield of cellulose remained at a level of 88.89 %, while the Crystallinity Index (CI) of cellulose decreased from 36.13 % (raw corn straw) to 13.50 % (regenerated material, RM). It was found that the average molecular weight (Mw) of lignin decreased from 1632 g/mol to 584 g/mol after pretreatment, indicating the lignin was depolymerized; the 2DHSQC result showed the beta-O-4 ' bond of lignin was broken. Because the cellulose crystallinity and the lignin content of the regenerated material were reduced greatly at the same time, the RM was easily hydrolyzed by cellulase. The enzymatic hydrolysis glucose yield of the RM was 3.75 times that of raw corn straw when the enzyme dosage was only 0.41 FPU/g sample, reaching 99.5 %. The IL was successfully recycled four times, and the recovery rate was higher than 93 % each time. RM obtained in four cycles maintained high lignin removal rate and enzymatic hydrolysis glucose yield. The degradation products of hemicellulose and lignin were the main impurities in the recovered IL. This work may provide a new solution for green and efficient biomass pretreatment. |
| WOS关键词 | RECYCLED IONIC LIQUIDS ; LIGNOCELLULOSIC BIOMASS ; ENZYMATIC-HYDROLYSIS ; LIGNIN DEPOLYMERIZATION ; DISSOLUTION ; SACCHARIFICATION ; EXTRACTION ; BAGASSE ; DELIGNIFICATION ; FRACTIONATION |
| 资助项目 | National Natural Science Foundation of China[21908094] ; National Natural Science Foundation of China[22178168] ; National Natural Science Foundation of China[21776130] ; National Natural Science Foundation of China[22078150] ; National Key Research and Development Program of China[2021YFC2101900] ; Key Research and Development Plan of Jiangsu Province[SBE2022740422] ; Key Research and Development Plan of Jiangsu Province[BE2021083] ; Nanjing International Joint Research and Development Project[202002037] ; Top-notch Academic Programs Project of Jiangsu Higher Education Institutions |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE SA |
| WOS记录号 | WOS:000913397100003 |
| 资助机构 | National Natural Science Foundation of China ; National Key Research and Development Program of China ; Key Research and Development Plan of Jiangsu Province ; Nanjing International Joint Research and Development Project ; Top-notch Academic Programs Project of Jiangsu Higher Education Institutions |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/56752]  |
| 通讯作者 | Guo, Kai |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Beijing Key Lab Ion Liquids Clean Proc, State Key Lab Multiphase Complex Syst,CAS Key Lab, Beijing 100190, Peoples R China 2.Nanjing Tech Univ, Coll Biotechnol & Pharmaceut Engn, Nanjing 211816, Peoples R China 3.Sinopec Dalian Res Inst Petr & Petrochem, 96 Nankai St, Dalian, Liaoning, Peoples R China 4.Nanjing Tech Univ, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Jiming,Wang, Shulin,Bai, Fudong,et al. Achieving efficient pretreatment of corn straw at elevated temperatures via constraining cellulose degradation[J]. CHEMICAL ENGINEERING JOURNAL,2023,454:12. |
| APA | Yang, Jiming.,Wang, Shulin.,Bai, Fudong.,Lu, Xingmei.,He, Wei.,...&Guo, Kai.(2023).Achieving efficient pretreatment of corn straw at elevated temperatures via constraining cellulose degradation.CHEMICAL ENGINEERING JOURNAL,454,12. |
| MLA | Yang, Jiming,et al."Achieving efficient pretreatment of corn straw at elevated temperatures via constraining cellulose degradation".CHEMICAL ENGINEERING JOURNAL 454(2023):12. |
入库方式： OAI收割
来源：过程工程研究所
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