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Ultrafiltration of kraft cooking liquors from a continuous cooking process

Wallberg, Ola LU ; Holmqvist, Anders LU and Jönsson, Ann-Sofi LU (2005) In Desalination 180(1-3). p.109-118
Abstract
Two cooking liquors and a black liquor were fractionated by ultrafiltration. The liquors were withdrawn from different stages in a kraft pulp mill employing continuous digestion. The ultrafiltration was performed at 90 degrees C with two ceramic membranes with cut-offs of 5 kDa and 15 kDa. Only small differences in membrane performance were observed when concentrating the three liquors to 90% volume reduction. The average flux was 55 1/m(2) h for the 5 kDa membrane and about 1151/m(2)h for the 15 kDa membrane. The concentration of lignin was on average 230 and 155 g/L in the retentate from the 5 kDa and 15 kDa cut-off membranes. The ash content was reduced from 37-40 g/g total dry solids to 20-30 g/g after ultrafiltration.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Desalination
volume
180
issue
1-3
pages
109 - 118
publisher
Elsevier
external identifiers
  • wos:000231944600013
  • scopus:27644435643
ISSN
1873-4464
DOI
10.1016/j.desal.2004.12.032
language
English
LU publication?
yes
id
99c849f0-d5b6-4c3c-bd69-9c0ca7dcde52 (old id 151606)
date added to LUP
2007-06-25 16:33:38
date last changed
2017-10-22 03:45:49
@article{99c849f0-d5b6-4c3c-bd69-9c0ca7dcde52,
  abstract     = {Two cooking liquors and a black liquor were fractionated by ultrafiltration. The liquors were withdrawn from different stages in a kraft pulp mill employing continuous digestion. The ultrafiltration was performed at 90 degrees C with two ceramic membranes with cut-offs of 5 kDa and 15 kDa. Only small differences in membrane performance were observed when concentrating the three liquors to 90% volume reduction. The average flux was 55 1/m(2) h for the 5 kDa membrane and about 1151/m(2)h for the 15 kDa membrane. The concentration of lignin was on average 230 and 155 g/L in the retentate from the 5 kDa and 15 kDa cut-off membranes. The ash content was reduced from 37-40 g/g total dry solids to 20-30 g/g after ultrafiltration.},
  author       = {Wallberg, Ola and Holmqvist, Anders and Jönsson, Ann-Sofi},
  issn         = {1873-4464},
  language     = {eng},
  number       = {1-3},
  pages        = {109--118},
  publisher    = {Elsevier},
  series       = {Desalination},
  title        = {Ultrafiltration of kraft cooking liquors from a continuous cooking process},
  url          = {http://dx.doi.org/10.1016/j.desal.2004.12.032},
  volume       = {180},
  year         = {2005},
}