Understanding of pH value and its effect on autohydrolysis pretreatment prior to poplar chemi-thermomechanical pulping

被引：17
|
作者：
Liu, Lihui [1 ]
Liu, Wei [1 ,2 ]
Hou, Qingxi [1 ]
Chen, Junwei [1 ]
Xu, Ningpan [1 ]
机构：
[1] Tianjin Univ Sci & Technol, Tianjin Key Lab Pulp & Paper, Tianjin 300457, Peoples R China
[2] Qilu Univ Technol, Key Lab Pulp & Paper Sci & Technol, Minist Educ, Jinan 250353, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2015年 / 196卷
基金：
高等学校博士学科点专项科研基金;
关键词：
Autohydrolysis; Acetic acid; pH value; Chemi-thermomechanical pulping (CTMP); HOT-WATER EXTRACTION; LOBLOLLY-PINE; ACID; KINETICS;
D O I：
10.1016/j.biortech.2015.08.034
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Autohydrolysis pretreatment with different severity factors was performed on poplar chips prior to chemi-thermomechanical pulping (CTMP) in order to investigate the change in pH value and its effect on the autohydrolysis pretreatment. The results showed that the dissolution amount of acetic acid increased with raising the severity factor of the pretreatment and declining the size of poplar chips, respectively. Besides, a logarithmic relationship between the amount of acetic acid released in the autohydrolysis liquor (AHL) and pH value of the AHL was observed. The amounts of glucose and xylose (including those in the form of monomers, oligomers, and polysaccharides) as well as furfural and hydroxymethylfurfural (HMF) also depended on the pH value of the AHL to some extent. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：662 / 667
页数：6
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