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打浆对绿液预处理阔叶木酶水解的促进作用(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2013年06期
Page:
116-120
Column:
研究论文
publishdate:
2013-11-27

Article Info:/Info

Title:
Effect of refining on enzymatic hydrolysis of green liquor pretreated mixed hardwoods
Article ID:
1000-2006(2013)06-0116-05
Author(s):
JIN Yongcan1 2 Houmin Chang2 Hasan Jameel2 Richard Phillips2
1. Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing 210037, China;
2. Department of Forest Biomaterials, North Carolina State University, Raleigh NC 27965, USA
Keywords:
mixed hardwoods refining green liquor pretreatment enzymatic hydrolysis sugar
Classification number :
TS743.14
DOI:
10.3969/j.issn.1000-2006.2013.06.023
Document Code:
A
Abstract:
Green liquor consists of sodium carbonate and sodium sulfide and is readily available in any kraft mill. Effects of refining on improving enzymatic hydrolysis was investigated using green liquor pretreated mixed hardwoods at 12% total titratable alkali charge. The sugar yield increases with the PFI revolution. Adding 1% NaOH during refining did not affect on pulp freeness significantly, but could effectively improve the sugar yield of enzymatic hydrolysis. Compared with controlled green liquor pretreated pulp without refining, a remarkable increase in sugar yield was achieved at a low enzyme loading after the pulp was refined by a PFI mill. Meanwhile, an obvious increase in sugar yield could be obtained in the initial 6 or 12 h of enzymatic hydrolysis with the same cellulase loading after pulp refined by PFI mill. The results indicate that refining has a great feasibility for increasing the accessibility of the cellulose and improving the enzymatic hydrolysis of lignocellulosic biomass.

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Last Update: 2013-11-30