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On-Site Recovery of Hemicelluloses from Thermomechanical Pulp Mill Process Water by Microfiltration and Ultrafiltration

Thuvander, Johan LU ; Lipnizki, Frank LU and Jönsson, Ann Sofi LU (2019) In Journal of Wood Chemistry and Technology 39(3). p.214-223
Abstract

During mechanical defibration of wood, a minor fraction of the wood mass is dissolved in the process water. These dissolved substances represent an extra energy demand when they are treated in the mill’s wastewater treatment plant. Galactoglucomannan, the main hemicellulose in spruce, can be recovered from thermomechanical pulp mill process water by a process based on microfiltration (MF) and ultrafiltration (UF). The purpose of this work was to study the scale-up of the process from laboratory scale to continuous industrial scale. MF was first studied in the laboratory, and then combined with UF in a continuous pilot process on-site at a pulp mill. The data obtained were used to estimate the cost of the membrane processes for... (More)

During mechanical defibration of wood, a minor fraction of the wood mass is dissolved in the process water. These dissolved substances represent an extra energy demand when they are treated in the mill’s wastewater treatment plant. Galactoglucomannan, the main hemicellulose in spruce, can be recovered from thermomechanical pulp mill process water by a process based on microfiltration (MF) and ultrafiltration (UF). The purpose of this work was to study the scale-up of the process from laboratory scale to continuous industrial scale. MF was first studied in the laboratory, and then combined with UF in a continuous pilot process on-site at a pulp mill. The data obtained were used to estimate the cost of the membrane processes for galactoglucomannan recovery which was found to be about €1160 per ton hemicelluloses.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
galactoglucomannan, hemicelluloses, Microfiltration, thermomechanical pulp, ultrafiltration
in
Journal of Wood Chemistry and Technology
volume
39
issue
3
pages
214 - 223
publisher
Taylor & Francis
external identifiers
  • scopus:85062342681
ISSN
0277-3813
DOI
10.1080/02773813.2019.1565865
language
English
LU publication?
yes
id
2947f1e4-f1e8-49df-9033-b4df5a8166df
date added to LUP
2019-03-14 08:21:33
date last changed
2019-06-28 08:15:28
@article{2947f1e4-f1e8-49df-9033-b4df5a8166df,
  abstract     = {<p>During mechanical defibration of wood, a minor fraction of the wood mass is dissolved in the process water. These dissolved substances represent an extra energy demand when they are treated in the mill’s wastewater treatment plant. Galactoglucomannan, the main hemicellulose in spruce, can be recovered from thermomechanical pulp mill process water by a process based on microfiltration (MF) and ultrafiltration (UF). The purpose of this work was to study the scale-up of the process from laboratory scale to continuous industrial scale. MF was first studied in the laboratory, and then combined with UF in a continuous pilot process on-site at a pulp mill. The data obtained were used to estimate the cost of the membrane processes for galactoglucomannan recovery which was found to be about €1160 per ton hemicelluloses.</p>},
  author       = {Thuvander, Johan and Lipnizki, Frank and Jönsson, Ann Sofi},
  issn         = {0277-3813},
  keyword      = {galactoglucomannan,hemicelluloses,Microfiltration,thermomechanical pulp,ultrafiltration},
  language     = {eng},
  month        = {02},
  number       = {3},
  pages        = {214--223},
  publisher    = {Taylor & Francis},
  series       = {Journal of Wood Chemistry and Technology},
  title        = {On-Site Recovery of Hemicelluloses from Thermomechanical Pulp Mill Process Water by Microfiltration and Ultrafiltration},
  url          = {http://dx.doi.org/10.1080/02773813.2019.1565865},
  volume       = {39},
  year         = {2019},
}