Ultrafiltration of kraft cooking liquors from a continuous cooking process
(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 The liquors were withdrawn from different stages in a kraft pulp mill employing continuous digestion.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.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/151606
- author
- Wallberg, Ola LU ; Holmqvist, Anders LU and Jönsson, Ann-Sofi LU
- organization
- publishing date
- 2005
- 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
- 2016-04-01 12:07:00
- date last changed
- 2023-11-26 02:13:15
@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 The liquors were withdrawn from different stages in a kraft pulp mill employing continuous digestion.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}}, doi = {{10.1016/j.desal.2004.12.032}}, volume = {{180}}, year = {{2005}}, }