Rapid Fractionation of Lignocellulosic Biomass by p-TsOH Pretreatment

被引：36

作者：

Yang, Mingyan ^{[1
,2
]}

Gao, Xiaofeng ^{[1
]}

Lan, Meng ^{[1
]}

Dou, Yan ^{[1
,2
]}

Zhang, Xiao ^{[1
]}

机构：

[1] Changan Univ, Sch Environm Sci & Engn, Xian 710054, Shaanxi, Peoples R China

[2] Shaanxi Key Lab Explorat & Comprehens Utilizat Mi, Xian 710054, Shaanxi, Peoples R China

来源：

ENERGY & FUELS | 2019年 / 33卷 / 03期

关键词：

ALKALINE HYDROGEN-PEROXIDE; RICE STRAW; ENZYMATIC-HYDROLYSIS; FECL3; PRETREATMENT; WHEAT-STRAW; ETHANOL; OPTIMIZATION; CELLULOSE; LIGNIN; CHALLENGES;

D O I：

10.1021/acs.energyfuels.8b03770

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

An innovative pretreatment process using a recyclable aromatic acid, p-toluenesulfonic acid (p-TsOH), was developed for lignocellulose fractionation and improvement in cellulose digestibility as well as lignin extraction in this study. Three different feedstocks including corncobs, wheat straw, and Miscanthus were pretreated by p-TsOH at a 70% (wt) concentration at 80 degrees C for 10 min for comparison. The results showed that p-TsOH pretreatment was highly effective in removing lignin and xylan, and it resulted in the production of cellulose-rich water-insoluble solids (WIS) and spent liquor, primarily containing xylose and lignin. The produced WIS from corncobs, wheat straw, and Miscanthus had rather high conversion rates of 100, 93, and 87%, respectively, at a cellulase loading of 15 FPU/g glucan at 72 h. The high lignin yield of 80.76% was obtained by diluting the spent acid liquor to below the minimal hydrotrope concentration. This process promotes an innovative approach for biomass fractionation and full utilization of the components.

引用

页码：2258 / 2264

页数：7

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