Welcome to Chemistry and Industry of Forest Products,

Chemistry and Industry of Forest Products ›› 2019, Vol. 39 ›› Issue (4): 65-71.doi: 10.3969/j.issn.0253-2417.2019.04.009

Previous Articles     Next Articles

P-factor Regulation of Characteristics in the Auto Hydrolysis ofPoplar Carbohydrate

Pengfei WANG1,Hao REN1,2,Huamin ZHAI1,*()   

  1. 1. Jiangsu Provincial Key Laboratory of Pulp and Paper Technology, Nanjing Forestry University, Nanjing 210037, China
    2. State Key Laboratory of Biomaterials and Green Papermaking, Qilu University of Technology, Jinan 250353, China
  • Received:2019-03-04 Online:2019-08-25 Published:2019-08-23
  • Contact: Huamin ZHAI E-mail:hzhai@njfu.edu.cn
  • Supported by:
    生物基材料与绿色造纸国家重点实验室开放基金资助项目(KF201803);国家自然科学基金资助项目(31070524)

Abstract:

To regulate carbohydrate reaction in the poplar autohydrolysis of biorefining, the effects of different P-factors on the pH value, hydrolysis rate, reducing sugar, holocellulose, different monosaccharides and furfural product in the poplar autohydrolysis system were studied in detail. The results showed that with the increase of P-factor to about 2 800, the pH value of the system decreased continuously to 3.6, the total hydrolysis rate and holocellulose removal rate reached 47% and 54%, respectively. Arabinose and rhamnose in pentosan were almost completely hydrolyzed, xylan was mostly hydrolyzed, and the removal rate of glucan was 37%(mostly from hemicellulose). The trend of total hydrolysis, holocellulose removal and pentosan removal could be divided into a fast and a following slow removal phase in the process. There was a positive correlation between P-factor and furfural production, which could be divided into a slow and a fast phase, and the conversion of pentose to furfural was 40%. P-factor could regulate the autohydrolysis of carbohydrate in poplar.

Key words: poplar, carbohydrate, P-factor, autohydrolysis, monosaccharide

CLC Number: