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Extraction of galactoglucomannan from thermomechanical pulp mill process water by microfiltration and ultrafiltration-Influence of microfiltration membrane pore size on ultrafiltration performance

Thuvander, Johan LU and Jönsson, Ann Sofi LU (2016) In Chemical Engineering Research & Design 105. p.171-176
Abstract

Galactoglucomannan is the major hemicellulose in process water from thermomechanical pulping of spruce. The recovery of hemicelluloses from this process water would both reduce the load on pulp mill water treatment plants and yield a biopolymer suitable as a raw material for renewable products. One method of recovering these hemicelluloses is two-stage filtration employing microfiltration to remove large contaminants, such as suspended matter and colloidal extractives, followed by ultrafiltration to concentrate and purify the hemicelluloses from low molecular mass contaminants. This investigation shows that a microfiltration membrane with a pore size of 0.1μm removes colloidal extractives while still maintaining a high amount of high... (More)

Galactoglucomannan is the major hemicellulose in process water from thermomechanical pulping of spruce. The recovery of hemicelluloses from this process water would both reduce the load on pulp mill water treatment plants and yield a biopolymer suitable as a raw material for renewable products. One method of recovering these hemicelluloses is two-stage filtration employing microfiltration to remove large contaminants, such as suspended matter and colloidal extractives, followed by ultrafiltration to concentrate and purify the hemicelluloses from low molecular mass contaminants. This investigation shows that a microfiltration membrane with a pore size of 0.1μm removes colloidal extractives while still maintaining a high amount of high molecular mass hemicelluloses in the microfiltration permeate. The removal of extractives resulted in an increase in the initial flux during the subsequent ultrafiltration step from 90 L/m2h to over 200 L/m2h.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Galactoglucomannan, Microfiltration, SEC, Thermomechanical pulp, Ultrafiltration
in
Chemical Engineering Research & Design
volume
105
pages
6 pages
publisher
IChemE
external identifiers
  • Scopus:84954545883
  • WOS:000370104900017
ISSN
0263-8762
DOI
10.1016/j.cherd.2015.12.003
language
English
LU publication?
yes
id
32d4f3e0-d10f-475b-89d4-5cb55512318b
date added to LUP
2016-06-17 15:45:33
date last changed
2017-01-01 08:28:18
@article{32d4f3e0-d10f-475b-89d4-5cb55512318b,
  abstract     = {<p>Galactoglucomannan is the major hemicellulose in process water from thermomechanical pulping of spruce. The recovery of hemicelluloses from this process water would both reduce the load on pulp mill water treatment plants and yield a biopolymer suitable as a raw material for renewable products. One method of recovering these hemicelluloses is two-stage filtration employing microfiltration to remove large contaminants, such as suspended matter and colloidal extractives, followed by ultrafiltration to concentrate and purify the hemicelluloses from low molecular mass contaminants. This investigation shows that a microfiltration membrane with a pore size of 0.1μm removes colloidal extractives while still maintaining a high amount of high molecular mass hemicelluloses in the microfiltration permeate. The removal of extractives resulted in an increase in the initial flux during the subsequent ultrafiltration step from 90 L/m<sup>2</sup>h to over 200 L/m<sup>2</sup>h.</p>},
  author       = {Thuvander, Johan and Jönsson, Ann Sofi},
  issn         = {0263-8762},
  keyword      = {Galactoglucomannan,Microfiltration,SEC,Thermomechanical pulp,Ultrafiltration},
  language     = {eng},
  month        = {01},
  pages        = {171--176},
  publisher    = {IChemE},
  series       = {Chemical Engineering Research & Design},
  title        = {Extraction of galactoglucomannan from thermomechanical pulp mill process water by microfiltration and ultrafiltration-Influence of microfiltration membrane pore size on ultrafiltration performance},
  url          = {http://dx.doi.org/10.1016/j.cherd.2015.12.003},
  volume       = {105},
  year         = {2016},
}