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有机溶剂法纯化麦草碱木质素(PDF)

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

Issue:
2000年05期
Page:
14-16
Column:
研究论文
publishdate:
1900-01-01

Article Info:/Info

Title:
Purification of Alkali lignin from Wheat Straw Pulping with Organic Solvents
Article ID:
1000-2006(2000)05-0014-03
Author(s):
YANG Yi qinLI Zhong zheng
College of Chemical Engineering Nanjing Forestry University, Nanjing 210037,China
Keywords:
Wheat straw Organic solvent Lignin Purification
Classification number :
TQ413
DOI:
10.3969/j.jssn.1000-2006.2000.05.004
Document Code:
A
Abstract:
Alkali lignin from wheat straw pulping was purified with organic solvents. Effects of different solvents and solvent dosages on yield and composition of purified lignin were investigated. The suitable solvent system and purifying conditions were determined. The results indicated: the ideal solvent system was a mixture of acetone and water (1∶1,v/v), the solvent to lignin ratio is 10∶1. Under this condition, the yield of lignin was 92.24%, the content of lignin is increased from 26.12% to 41.54%, the content of total sugar and ash in purified lignin were decreased from 16.14% to 3.43% and 34.29% to 27.12% respectively.

References

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Last Update: 1900-01-01