文献类型：期刊文献

英文题名：Recycling Deep Eutectic Solvents for Efficient and Sustainable Lignocellulosic Biomass Processing

作者：Zhang, Qing[1,2,5] Zhu, Enqing[1] Zhang, Chi[1] Tian, Qingwen[2,3,4] Zhang, Lili[1] Shen, Jing[2] Ni, Yonghao[2,5] Wang, Zhiguo[1]

第一作者：Zhang, Qing

机构：[1] Jiangsu Co-Innovation Center of Efficient Processing, Utilization of Forest Resources, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, 210037, China; [2] Limerick Pulp and Paper Centre, Department of Chemical Engineering, University of New Brunswick, Fredericton, NB, E3B 5A3, Canada; [3] Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing, 210042, China; [4] Shandong Huatai Paper Co., Ltd., Shandong Yellow Triangle Biotechnology Industry Research Institute Co. LTD, Dongying, 257335, China; [5] University of Maine, United States

年份：2025

外文期刊名：SSRN

收录：EI(收录号：20250159037)

语种：英文

外文关键词：Lignocellulose

摘要：Deep eutectic solvents (DESs) present a promising pathway for sustainable lignocellulosic biomass fractionation, yet challenges such as solvent recyclability and maintaining product quality over repeated cycles persist, which is largely caused by hemicelluloses. This study addresses these challenges by integrating hydrothermal pretreatment of biomass to remove hemicelluloses, mitigating the accumulation of degradation products that impact DES efficiency. Using a lactic acid/choline chloride (LA/ChCl) DES system, lignocellulose was fractionated across multiple cycles, with high-purity lignin exhibiting uniform molecular weight distribution and cellulose displaying enhanced crystallinity. Furthermore, the activated carbon adsorption concept can effectively purify recycled DES, restoring delignification efficiency to near-original levels. The properties and functional group content of lignin and cellulose fractions obtained after 5 times of DES recycling are similar. This work provides new process concepts for DES fractionation of biomass, offering a scalable and environmentally sustainable solution for lignocellulosic biomass processing within biorefinery frameworks. ? 2025, The Authors. All rights reserved.