Production and recovery of monosaccharides from lignocellulose hot water extracts in a pulp mill biorefinery

被引：29
|
作者：
Sainio, Tuomo [1 ]
Kallioinen, Mari [1 ]
Nakari, Olli [1 ]
Manttari, Mika [1 ]
机构：
[1] Lappeenranta Univ Technol, Dept Chem Technol, FIN-53850 Lappeenranta, Finland
来源：
BIORESOURCE TECHNOLOGY | 2013年 / 135卷
关键词：
Hemicelluloses; Membrane separation; Acid hydrolysis; Chromatographic separation; Monosaccharides; SEPARATION; ULTRAFILTRATION; CHROMATOGRAPHY; PRETREATMENT; GENERATION; HYDROLYSIS; INHIBITORS; MEMBRANES; SOFTWOOD; WOOD;
D O I：
10.1016/j.biortech.2012.08.126
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Processing of hemicelluloses obtained with pressurized hot water extraction (PHWE) from Scots pine to monosaccharides and other chemicals was investigated experimentally. A process scheme consisting of ultrafiltration, acid hydrolysis, and chromatographic separation was proposed and evaluated. A two-stage ultrafiltration was found necessary for efficient fractionation of the wood extract. It was shown that the monosaccharides can be released from a concentrated hernicellulose fraction with sulfuric acid hydrolysis without a significant loss of yield due to decomposition of monosaccharides. Acid hydrolysate was successfully fractionated with ion exchange chromatography and the hydrolysis acid was recovered for reuse. The product fractions obtained include polyphenols and high molar mass hemicelluloses (from UF stage 1), arabinose (from UF stage 2), as well as acetic acid and a mixture of monosaccharides (xylose, galactose, mannose, glucose) from chromatography. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：730 / 737
页数：8
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