Mass balance and transformation of corn stover by pretreatment with different dilute organic acids

被引：136

作者：

Qin, Lei ^{[1
]}

Liu, Zhi-Hua ^{[1
]}

Li, Bing-Zhi ^{[1
]}

Dale, Bruce E. ^{[2
]}

Yuan, Ying-Jin ^{[1
]}

机构：

[1] Tianjin Univ, Sch Chem Engn & Technol, Minist Educ, Key Lab Syst Bioengn,Dept Pharmaceut Engn, Tianjin 300072, Peoples R China

[2] Michigan State Univ, Dept Chem Engn & Mat Sci, Biomass Convers Res Lab, Lansing, MI 48910 USA

来源：

BIORESOURCE TECHNOLOGY | 2012年 / 112卷

基金：

中国国家自然科学基金;

关键词：

Corn stover; Pretreatment; Organic acid; Mass balance; Combined severity; ENZYMATIC-HYDROLYSIS; WHEAT-STRAW; TECHNOLOGIES; FERMENTATION; CONVERSION; SACCHARIFICATION; INHIBITORS; BIOMASS; SUGARS; YIELDS;

D O I：

10.1016/j.biortech.2012.02.134

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Previous studies indicated high xylose yield could be achieved after pretreatment using organic acids, but it is necessary to systematically investigate the effects of different parameters during organic acid pretreatments. Corn stover was pretreated with sulfuric, oxalic, citric, tartaric and acetic acid at 50 and 90 mM from 130 to 190 degrees C. The xylan balance for each different acid was distinct, but all balances were very close to 100% by determining xylan recovery, xylooligomer yield, xylose yield and furfural yield. The effects of combined severity on the recovery or yields of these components were also studied. The acid pK(a) value affected the proportion of xylan degradation products. The maximum value of xylose and xylooligomer yield for specific acid pretreatment was also determined by pK(a) value. The maximum xylose yield was obtained after pretreatment with sulfuric and oxalic acid, but more xylooligomers were obtained after pretreatment with weaker acids. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：319 / 326

页数：8

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