Combined dilute hydrochloric acid and alkaline wet oxidation pretreatment to improve sugar recovery of corn stover

被引：53

作者：

An, Shengxin ^{[1
,2
]}

Li, Wenzhi ^{[1
,3
]}

Liu, Qiyu ^{[1
]}

Xia, Ying ^{[1
,4
]}

Zhang, Tingwei ^{[1
]}

Huang, Feng ^{[1
]}

Lin, Qizhao ^{[1
]}

Chen, Liang ^{[3
]}

机构：

[1] Univ Sci & Technol China, Lab Basic Res Biomass Convers & Utilizat, Hefei 230026, Anhui, Peoples R China

[2] Anhui Univ Sci & Technol, Inst Chem Engn, Huainan 232001, Peoples R China

[3] Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230026, Anhui, Peoples R China

[4] Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510650, Guangdong, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2019年 / 271卷

关键词：

Corn stover; Alkaline wet oxidation; Two-stage pretreatment; Oxidative delignification; Enzymatic hydrolysis; ENZYMATIC-HYDROLYSIS; WHEAT-STRAW; LIGNOCELLULOSIC BIOMASS; RENEWABLE RESOURCES; AQUEOUS AMMONIA; LIQUID BIOFUELS; IONIC LIQUID; 2-STAGE; SACCHARIFICATION; TRANSFORMATION;

D O I：

10.1016/j.biortech.2018.09.126

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Two-stage dilute hydrochloric acid (DA)/aqueous ammonia wet oxidation (AWO) pretreatment was used to recover the sugars of corn stover. The morphology characterizations of samples were detected by SEM, BET and SXT. The results showed that DA-AWO process demonstrated a positive effect on sugar recovery compared to AWO-DA. 82.8% of xylan was recovered in the first stage of DA-AWO process at 120 degrees C for 40 min with 1 wt% HCl. The second stage was performed under relative mild reaction conditions (130 degrees C, 12.6 wt% ammonium hydroxide, 3.0 MPa O-2, 40 min), and 86.1% lignin could be removed. 71.5% of glucan was achieved with a low enzyme dosage (3 FPU.g(-1)) in the following enzymatic hydrolysis. DA-AWO pretreatment was effective due to its sufficient hydrolysis of hemicellulose in the first stage and remarkably removal of the lignin in the second stage, resulting in high sugar recovery with a low enzyme dosage.

引用

页码：283 / 288

页数：6

共 41 条

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