Acid Hydrolysis of Prehydrolysis Liquor Produced from the Kraft-Based Dissolving Pulp Production Process

被引：25
|
作者：
Yang, Guihua [1 ,2 ]
Jahan, M. Sarwar [2 ,3 ]
Liu, Haitang [2 ,4 ]
Ni, Yonghao [2 ]
机构：
[1] Shandong Polytech Univ, Key Lab Pulp & Paper Sci & Technol, Minist Educ, Jinan 250353, Shandong, Peoples R China
[2] Univ New Brunswick, Limerick Pulp & Paper Ctr, Fredericton, NB E3B 5A3, Canada
[3] BCSIR Labs, Pulp & Paper Res Div, Dhaka 1205, Bangladesh
[4] Tianjin Univ Sci & Technol, Tianjin Key Lab Pulp & Paper, Tianjin 300457, Peoples R China
来源：
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2012年 / 51卷 / 43期
基金：
加拿大自然科学与工程研究理事会; 美国国家科学基金会;
关键词：
HOT-WATER; SUGARCANE BAGASSE; HEMICELLULOSE; RECOVERY; GLUCOSE; XYLOSE; STRAW;
D O I：
10.1021/ie3023059
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Acid hydrolysis is an essential step in converting polysaccharides to monosaccharides for the production of fuels and chemicals. The prehydrolysis liquor (PHL) from the kraft-based dissolving pulp production process contains mainly oligosugars with a minor amount of monosugars. In this study, the influence of process conditions, including the sulfuric acid concentration, temperature, and time on the PHL hydrolysis was thoroughly investigated in order to get maximum monosugar concentration with minimal degradation of sugars. The maximum monosugar concentration was obtained at 130 degrees C for 20 min when the hydrolysis was carried out with 1.78% H2SO4. A high acid concentration (3.33%) increased furfural formation and decreased the monosugar concentration. Acetic acid is generated from the acetyl groups bound to the dissolved hemicelluloses, resulting in a significant increase in the acetic acid concentration in the PHL.
引用
收藏
页码：13902 / 13907
页数：6
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