Combined membrane filtration and enzymatic treatment for recovery of high molecular mass hemicelluloses from chemithermomechanical pulp process water
(2013) In Chemical Engineering Journal 225. p.292-299- Abstract
- Hemicelluloses with high molecular mass are needed for the manufacture of value added products such as food packaging barrier films. In this work such molecules were recovered from chemithermomechanical pulp (CTMP) process water using an innovative three-stage process comprising membrane separation and enzymatic treatment with laccase. Microfiltration followed by ultrafiltration was found to be a suitable combination in the first stage, providing a concentrated and purified hemicellulose fraction suitable for enzymatic treatment. In both membrane processes a high average flux (260 and 115 l/m2 h) and a low fouling tendency were observed. A marked increase in the average molecular mass of hemicelluloses with bound lignin moieties was... (More)
- Hemicelluloses with high molecular mass are needed for the manufacture of value added products such as food packaging barrier films. In this work such molecules were recovered from chemithermomechanical pulp (CTMP) process water using an innovative three-stage process comprising membrane separation and enzymatic treatment with laccase. Microfiltration followed by ultrafiltration was found to be a suitable combination in the first stage, providing a concentrated and purified hemicellulose fraction suitable for enzymatic treatment. In both membrane processes a high average flux (260 and 115 l/m2 h) and a low fouling tendency were observed. A marked increase in the average molecular mass of hemicelluloses with bound lignin moieties was achieved by laccase treatment in the second stage. The enzymatically crosslinked hemicelluloses were finally recovered in the third stage using ultrafiltration. In the final high molecular mass solution the hemicellulose concentration was 54 g/l, the contribution of hemicelluloses to the total solids content 43%, and the viscosity of the solution 27 mPa s. The results demonstrate that a hemicellulose fraction of high quality can be produced from CTMP process water, and that this could constitute a suitable feedstock for the production of, for example, barrier films for renewable packaging. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3990668
- author
- Krawczyk, Holger LU ; Oinonen, Petri and Jönsson, Ann-Sofi LU
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Chemithermomechanical pulp, Hemicellulose, Galactoglucomannan, Membrane filtration, Laccase
- in
- Chemical Engineering Journal
- volume
- 225
- pages
- 292 - 299
- publisher
- Elsevier
- external identifiers
-
- wos:000321313800034
- scopus:84876733717
- ISSN
- 1385-8947
- DOI
- 10.1016/j.cej.2013.03.089
- language
- English
- LU publication?
- yes
- id
- 3f95323b-d394-4a97-88bb-3f7c60058fcf (old id 3990668)
- date added to LUP
- 2016-04-01 14:59:50
- date last changed
- 2023-11-28 03:25:28
@article{3f95323b-d394-4a97-88bb-3f7c60058fcf,
abstract = {{Hemicelluloses with high molecular mass are needed for the manufacture of value added products such as food packaging barrier films. In this work such molecules were recovered from chemithermomechanical pulp (CTMP) process water using an innovative three-stage process comprising membrane separation and enzymatic treatment with laccase. Microfiltration followed by ultrafiltration was found to be a suitable combination in the first stage, providing a concentrated and purified hemicellulose fraction suitable for enzymatic treatment. In both membrane processes a high average flux (260 and 115 l/m2 h) and a low fouling tendency were observed. A marked increase in the average molecular mass of hemicelluloses with bound lignin moieties was achieved by laccase treatment in the second stage. The enzymatically crosslinked hemicelluloses were finally recovered in the third stage using ultrafiltration. In the final high molecular mass solution the hemicellulose concentration was 54 g/l, the contribution of hemicelluloses to the total solids content 43%, and the viscosity of the solution 27 mPa s. The results demonstrate that a hemicellulose fraction of high quality can be produced from CTMP process water, and that this could constitute a suitable feedstock for the production of, for example, barrier films for renewable packaging.}},
author = {{Krawczyk, Holger and Oinonen, Petri and Jönsson, Ann-Sofi}},
issn = {{1385-8947}},
keywords = {{Chemithermomechanical pulp; Hemicellulose; Galactoglucomannan; Membrane filtration; Laccase}},
language = {{eng}},
pages = {{292--299}},
publisher = {{Elsevier}},
series = {{Chemical Engineering Journal}},
title = {{Combined membrane filtration and enzymatic treatment for recovery of high molecular mass hemicelluloses from chemithermomechanical pulp process water}},
url = {{https://lup.lub.lu.se/search/files/4291405/3990672.pdf}},
doi = {{10.1016/j.cej.2013.03.089}},
volume = {{225}},
year = {{2013}},
}