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Fractionation of hemicelluloses by membrane filtration

Persson, Tobias LU ; Jönsson, Ann-Sofi LU and Zacchi, Guido LU (2005) 14th European Biomass Conference In Proceedings of the 14th European Biomass Conference p.1693-1696
Abstract
Hemicellulosic materials are among the most abundant renewable resources on earth, but have not yet found any broad application. However, if a cost effective extraction method is developed, hemicelluloses have the potential to be utilized to a much larger extent in the future. Ultrafiltration (UF) is a low energy demanding separation process that can be used to concentrate and purify hemicelluloses from industrial process water. In this investigation the performance of six UF membranes was studied, when treating process water from thermo-mechanical pulping (TMP) of spruce. Four membranes were hydrophobic and two hydrophilic and the cut-off was 1-5 kDa. The hydrophobic membranes were subject to severe fouling problems and had a much lower... (More)
Hemicellulosic materials are among the most abundant renewable resources on earth, but have not yet found any broad application. However, if a cost effective extraction method is developed, hemicelluloses have the potential to be utilized to a much larger extent in the future. Ultrafiltration (UF) is a low energy demanding separation process that can be used to concentrate and purify hemicelluloses from industrial process water. In this investigation the performance of six UF membranes was studied, when treating process water from thermo-mechanical pulping (TMP) of spruce. Four membranes were hydrophobic and two hydrophilic and the cut-off was 1-5 kDa. The hydrophobic membranes were subject to severe fouling problems and had a much lower flux than the hydrophilic membranes. The hydrophilic membrane C005F, from Microdyn Nadir GmbH with cut-off 5 kDa, had the highest flux and showed the best separation capability with respect to hemicelluloses and contaminants (salts and monosaccharides). The flux was 140 l/m2.h at 0.8 MPa and 40°C. The retention of hemicelluloses was 90% and the retention of monosaccharides 3%. High flux and efficient separation of product and contaminants reduce the investment costs of a hemicellulose extraction plant. (Less)
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author
organization
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type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
Proceedings of the 14th European Biomass Conference
pages
4 pages
publisher
14th European Biomass Conference, 17-21 October 2005, Paris, France
conference name
14th European Biomass Conference
ISBN
88-89407-07-7
language
English
LU publication?
yes
id
516061fb-ce64-4b63-94d9-434465b97bf6 (old id 1492515)
date added to LUP
2009-10-23 13:01:35
date last changed
2016-04-16 09:58:21
@misc{516061fb-ce64-4b63-94d9-434465b97bf6,
  abstract     = {Hemicellulosic materials are among the most abundant renewable resources on earth, but have not yet found any broad application. However, if a cost effective extraction method is developed, hemicelluloses have the potential to be utilized to a much larger extent in the future. Ultrafiltration (UF) is a low energy demanding separation process that can be used to concentrate and purify hemicelluloses from industrial process water. In this investigation the performance of six UF membranes was studied, when treating process water from thermo-mechanical pulping (TMP) of spruce. Four membranes were hydrophobic and two hydrophilic and the cut-off was 1-5 kDa. The hydrophobic membranes were subject to severe fouling problems and had a much lower flux than the hydrophilic membranes. The hydrophilic membrane C005F, from Microdyn Nadir GmbH with cut-off 5 kDa, had the highest flux and showed the best separation capability with respect to hemicelluloses and contaminants (salts and monosaccharides). The flux was 140 l/m2.h at 0.8 MPa and 40°C. The retention of hemicelluloses was 90% and the retention of monosaccharides 3%. High flux and efficient separation of product and contaminants reduce the investment costs of a hemicellulose extraction plant.},
  author       = {Persson, Tobias and Jönsson, Ann-Sofi and Zacchi, Guido},
  isbn         = {88-89407-07-7},
  language     = {eng},
  pages        = {1693--1696},
  publisher    = {ARRAY(0xc06da70)},
  series       = {Proceedings of the 14th European Biomass Conference},
  title        = {Fractionation of hemicelluloses by membrane filtration},
  year         = {2005},
}