半纤维素
木质素
竹子
纤维素
分馏
生物量(生态学)
糠醛
制浆造纸工业
木质纤维素生物量
化学
水解
木糖
木聚糖
酶水解
有机化学
催化作用
核化学
发酵
材料科学
农学
工程类
生物
复合材料
作者
Qiaolong Zhai,Feng Long,Chung‐Yun Hse,Fei Wang,Todd F. Shupe,Jianchun Jiang,Junming Xu
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2019-11-06
卷期号:7 (23): 19213-19224
被引量:31
标识
DOI:10.1021/acssuschemeng.9b05392
摘要
A mild methanolysis pretreatment strategy was developed with a recyclable acid, p-TsOH, as the catalyst for the fractionation of lignocellulosic biomass toward its main components. Bamboo fiber was fractionated in one step with dissolution of more than 88% lignin and 90% xylan with most of the cellulose (86.8%) retained in pretreated bamboo at mild conditions (110 °C, 30 min, and 10% p-TsOH). Enzymatic hydrolysis of the cellulose-rich fraction was enhanced to 89.2% at an enzyme loading of 15 FPU g–1 substrate, nearly 4-fold higher than the untreated bamboo. Most of the xylan (hemicellulose) and lignin in the biomass were extracted and dissolved into the spent liquor. The extracted lignin had higher purity (>94%) and a moderate and homogeneous molecular weight, which could be adapted to add value to lignin. p-TsOH can be effectively recovered by recrystallization technology after concentrating the spent liquor. Hemicellulose (xylan) was transformed into methyl xyloside and furfural during the pretreatment. Overall, the described process showed practical significance for the effective fractionation and comprehensive utilization of lignocellulosic biomass components.
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