化工学报2024，Vol.75Issue(6)：2274-2282,9.DOI:10.11949/0438-1157.20240049
温和条件下乙二醇苯醚高效分离回收甘蔗渣组分
Efficient fractionation of sugarcane bagasse with phenoxyethanol under mild condition
摘要
Abstract
In this study,efficient fractionation of sugarcane bagasse(SCB)with acidified phenoxyethanol(EPH)was investigated.High lignin(90.33%)and hemicellulose(76.70%)removal efficiency with 90.47%cellulose retention was achieved by using EPH at 110℃,60 min,with 0.05 mol/L acid loading for SCB.The enzymatic digestibility of residue reached 89.71%,which was nearly 6 times that of the untreated sugarcane bagasse(15.93%).74.29%lignin of 93.53%purification was recovered from the pretreatment solution using isopropyl ether.SEM,XRD,and FTIR were used to characterize the composition and structure of the pretreated residue and raw materials.It was found that the morphological structure of bagasse was destroyed,the crystallinity was improved,and the enzymatic digestibility was greatly improved.Additionally,the etherification of phenoxyethanol and lignin to suppress the condensation of lignin was disclosed by 2D HSQC characterization.Overall,EPH pretreatment achieved efficient fractionation and recovery of high purity lignin and fermentable sugars under mild condition from sugarcane bagasse.This study can provide reference for the high-value utilization of lignocellulosic biomass.关键词
生物质/生物分离/预处理/酶解/木质素/生物能源Key words
biomass/bioseparation/pretreatment/enzymatic hydrolysis/lignin/bioenergy分类
能源科技引用本文复制引用
张祎琪,谭雪松,李吾环,张权,苗长林,庄新姝..温和条件下乙二醇苯醚高效分离回收甘蔗渣组分[J].化工学报,2024,75(6):2274-2282,9.基金项目
国家重点研发计划国际科技创新合作项目(2021YFE0114400) （2021YFE0114400）
国家自然科学基金项目(51976221) （51976221）
广东省基础与应用基础研究基金项目(2022A1515012078) （2022A1515012078）
