Liu Lihui, Liu Wei, Hou Qingxi, Chen Junwei, Xu Ningpan
Tianjin Key Laboratory of Pulp & Paper, Tianjin University of Science & Technology, Tianjin 300457, China.
Tianjin Key Laboratory of Pulp & Paper, Tianjin University of Science & Technology, Tianjin 300457, China; Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology, Jinan 250353, China.
Bioresour Technol. 2015 Nov;196:662-7. doi: 10.1016/j.biortech.2015.08.034. Epub 2015 Aug 20.
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.
在进行化学热磨机械浆（CTMP）制浆之前，对杨木片进行了不同强度因子的自水解预处理，以研究pH值的变化及其对自水解预处理的影响。结果表明，乙酸的溶解量分别随着预处理强度因子的提高和杨木片尺寸的减小而增加。此外，观察到自水解液（AHL）中释放的乙酸量与AHL的pH值之间存在对数关系。葡萄糖和木糖（包括单体、低聚物和多糖形式的那些）以及糠醛和羟甲基糠醛（HMF）的量在一定程度上也取决于AHL的pH值。
