Welcome to Chemistry and Industry of Forest Products,

›› 2013, Vol. 33 ›› Issue (2): 119-122.doi: 10.3969/j.issn.0253-2417.2013.02.021

• 研究报告 • Previous Articles     Next Articles

Sugar Preparation from Pulping Black Liquor by Hydrolysis

YANG Jing, JIANG Jian-chun, ZHANG Ning, WEI Min, ZHAO Jian   

  1. Institute of Chemical Industry of Forest Products, CAF;National Engineering Lab. for Biomass Chemical Utilization; Key and Open Lab. of Forest Chemical Engineering, SFA;Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China
  • Received:2012-02-22 Revised:1900-01-01 Online:2013-04-30 Published:2013-04-30

Abstract: The reducing sugar preparation by various hydrolysis methods from sulfate pulping black liquor of Pinus massoniana was investigated in present study. The results indicated enzymatic hydrolysis had high efficiency on sugar reducing in contrast to acid hydrolysis. A reducing sugar content of 9.18 g/L was obtained by enzymatic hydrolysis after delignification. And the optimum conditions for delignification was conducted as black liquore was hydrolyzed by 6%, sulfuric acid solution at 75℃ under pH 3.0 environment. The highest hemicellulose content of 47.61 g/L was obtained in the supernatant residual.The dominant products in hydrolysate were 3.63 g/L glucose, followed by 2.94 g/L xylitol and 1.81 g/L cellobiose. But small amounts of xylose and arabinose were obtained, and their contents, represented 0.80 and 0.02 g/L respectively.

Key words: black liquor, hemicellulose, hydrolysis, reducing sugar

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