Ultrafiltration of kraft black liquor from two Swedish pulp mills
Holmqvist, Anders LU ; Wallberg, Ola LU
and Jönsson, Ann-Sofi
LU
(2005)
In Chemical Engineering Research & Design
83(A8).
p.994-999
- Abstract
- Extraction of lignin by ultrafiltration of black liquor from two Swedish pulp mills has been studied. One of the mills employs batch digestion and the other continuous digestion. At both mills softwood was used as raw material. The black liquor was withdrawn before the evaporator unit. A ceramic membrane with a cut-off of 15 000 g mol(-1) was used in the experiments. The average flux during concentration to 90% volume reduction was 160 and 110L m(-2) h(-1) for the liquors from the batch and the continuous digestion processes, respectively, when the temperature was 90 degrees C and the transmembrane pressure 200 kPa. The retention of lignin was about the same for both liquors, 35%. A cost estimate of extraction of lignin fuel from black... (More)
- Extraction of lignin by ultrafiltration of black liquor from two Swedish pulp mills has been studied. One of the mills employs batch digestion and the other continuous digestion. At both mills softwood was used as raw material. The black liquor was withdrawn before the evaporator unit. A ceramic membrane with a cut-off of 15 000 g mol(-1) was used in the experiments. The average flux during concentration to 90% volume reduction was 160 and 110L m(-2) h(-1) for the liquors from the batch and the continuous digestion processes, respectively, when the temperature was 90 degrees C and the transmembrane pressure 200 kPa. The retention of lignin was about the same for both liquors, 35%. A cost estimate of extraction of lignin fuel from black liquor was made, based on experimental data from ultrafiltration at various operating conditions. The cost was found to be about 20 E per MWh of calorific value of the lignin fuel. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/151638
- author
- Holmqvist, Anders
LU
; Wallberg, Ola
LU
and Jönsson, Ann-Sofi
LU
- organization
- publishing date
- 2005
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Chemical Engineering Research & Design
- volume
- 83
- issue
- A8
- pages
- 994 - 999
- publisher
- Institution of Chemical Engineers
- external identifiers
-
- wos:000231744300006
- scopus:23944441532
- ISSN
- 0263-8762
- DOI
- 10.1205/cherd.04204
- language
- English
- LU publication?
- yes
- id
- 9d855162-1095-4aec-91c0-303706b6177c (old id 151638)
- date added to LUP
- 2016-04-01 16:24:31
- date last changed
- 2023-11-28 23:21:11
@article{9d855162-1095-4aec-91c0-303706b6177c,
abstract = {{Extraction of lignin by ultrafiltration of black liquor from two Swedish pulp mills has been studied. One of the mills employs batch digestion and the other continuous digestion. At both mills softwood was used as raw material. The black liquor was withdrawn before the evaporator unit. A ceramic membrane with a cut-off of 15 000 g mol(-1) was used in the experiments. The average flux during concentration to 90% volume reduction was 160 and 110L m(-2) h(-1) for the liquors from the batch and the continuous digestion processes, respectively, when the temperature was 90 degrees C and the transmembrane pressure 200 kPa. The retention of lignin was about the same for both liquors, 35%. A cost estimate of extraction of lignin fuel from black liquor was made, based on experimental data from ultrafiltration at various operating conditions. The cost was found to be about 20 E per MWh of calorific value of the lignin fuel.}},
author = {{Holmqvist, Anders and Wallberg, Ola and Jönsson, Ann-Sofi}},
issn = {{0263-8762}},
language = {{eng}},
number = {{A8}},
pages = {{994--999}},
publisher = {{Institution of Chemical Engineers}},
series = {{Chemical Engineering Research & Design}},
title = {{Ultrafiltration of kraft black liquor from two Swedish pulp mills}},
url = {{http://dx.doi.org/10.1205/cherd.04204}},
doi = {{10.1205/cherd.04204}},
volume = {{83}},
year = {{2005}},
}