Rice husk-based solid acid for efficient hydrolysis and saccharification of corncob

被引：38

作者：

Chen, Na ^{[1
]}

Zhang, Guangming ^{[2
]}

Zhang, Panyue ^{[1
,3
]}

Tao, Xue ^{[1
,4
]}

Wu, Yan ^{[3
]}

Wang, Siqi ^{[1
]}

Nabi, Mohammad ^{[1
]}

机构：

[1] Beijing Forestry Univ, Coll Environm Sci & Engn, Qinghua East Rd 35, Beijing 100083, Peoples R China

[2] Renmin Univ China, Sch Environm & Nat Resources, Beijing 100872, Peoples R China

[3] Chongqing Three Gorges Univ, Sch Environm & Chem Engn, Chongqing 404632, Peoples R China

[4] Northwestern Univ, Dept Civil & Environm Engn, Evanston, IL 60208 USA

来源：

BIORESOURCE TECHNOLOGY | 2019年 / 292卷

基金：

中国国家自然科学基金;

关键词：

Rice husk-based solid acid catalyst; Corncob; Hydrolysis; Saccharification; Reducing sugar; Hemicelluloses; ENHANCE ENZYMATIC SACCHARIFICATION; ASSISTED ALKALINE PRETREATMENT; OLEIC-ACID; CATALYST; ESTERIFICATION; CELLULOSE; LIGNOCELLULOSE; DISTILLATE; CONVERSION; BAGASSE;

D O I：

10.1016/j.biortech.2019.121915

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

This work studied preparation of rice husk-based solid acid and its application for efficient hydrolysis and saccharification of corncob. Rice husk-based solid acid (RH-SO3H) was prepared by one-step carbonization and sulfonation method. Analysis demonstrated that RH-SO3H exhibited aromatic carbon sheets structure bearing - SO3H, -COOH and -OH groups. The RH-SO3H was then used to hydrolyse and saccharify corncob. Compared with solid acids made from activated carbon and microcrystalline cellulose, the RH-SO3H showed the highest catalytic efficiency with the maximum reducing sugar yield of 486.53 mg/g and xylose of 253.03 mg/g, which was twice and five times higher than that of control, respectively. Its high efficiency was attributed to -OH and - COOH groups functioned synergistically with -SO3H to hydrolyse lignocellulose by adsorbing beta-1,4-glucan in corncob. This study provides a green and effective utilization technology of lignocellulosic biomass.

引用

页数：6

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