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The influence of a low-molecular hydrophobic solute on the flux of poly-sulphone ultrafiltration membranes with different cut-off

Lindau, J; Jönsson, Ann-Sofi LU and Wimmerstedt, Roland LU (1995) In Journal of Membrane Science 106(1-2). p.9-16
Abstract
In this study the influence of a low-molecular hydrophobic solute on the Bur of a hydrophilic regenerated cellulose membrane and hydrophobic polysulphone membranes with different nominal molecular weight cut-off, NMWCO, was investigated. Octanoic acid was used as a model substance because it is considerably smaller than the NMWCO of all the membranes used in the investigation. Octanoic acid was found to decrease the flux of the polysulphone membranes considerably. The decrease was dependent on the NMCWO, although in all cases the NMWCO is many times larger than the size of the octanoic acid molecules. It is also shown that the Bur of the hydrophilic membrane, with a NMWCO of the same size as one of the denser hydrophobic membranes, is... (More)
In this study the influence of a low-molecular hydrophobic solute on the Bur of a hydrophilic regenerated cellulose membrane and hydrophobic polysulphone membranes with different nominal molecular weight cut-off, NMWCO, was investigated. Octanoic acid was used as a model substance because it is considerably smaller than the NMWCO of all the membranes used in the investigation. Octanoic acid was found to decrease the flux of the polysulphone membranes considerably. The decrease was dependent on the NMCWO, although in all cases the NMWCO is many times larger than the size of the octanoic acid molecules. It is also shown that the Bur of the hydrophilic membrane, with a NMWCO of the same size as one of the denser hydrophobic membranes, is unaffected by the octanoic acid. The cross-sections of both used and unused membranes were examined in a scanning electron microscope (SEM). No visual difference was observed between the used and unused membrane samples. Analysis of the membranes with Fourier transform infrared spectroscopy (FTIR) showed that octanoic acid remained in the membranes even after thorough cleaning. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
ULTRAFILTRATION, FOULING, ADSORPTION, FATTY ACID, CLEANING
in
Journal of Membrane Science
volume
106
issue
1-2
pages
9 - 16
publisher
Elsevier
external identifiers
  • wos:A1995TB40100002
  • scopus:0028807936
ISSN
0376-7388
DOI
10.1016/0376-7388(95)00072-K
language
English
LU publication?
yes
id
01c93c47-26fb-4d47-81bd-d05bdefc7807 (old id 3915543)
date added to LUP
2013-07-02 10:10:47
date last changed
2017-01-01 06:37:17
@article{01c93c47-26fb-4d47-81bd-d05bdefc7807,
  abstract     = {In this study the influence of a low-molecular hydrophobic solute on the Bur of a hydrophilic regenerated cellulose membrane and hydrophobic polysulphone membranes with different nominal molecular weight cut-off, NMWCO, was investigated. Octanoic acid was used as a model substance because it is considerably smaller than the NMWCO of all the membranes used in the investigation. Octanoic acid was found to decrease the flux of the polysulphone membranes considerably. The decrease was dependent on the NMCWO, although in all cases the NMWCO is many times larger than the size of the octanoic acid molecules. It is also shown that the Bur of the hydrophilic membrane, with a NMWCO of the same size as one of the denser hydrophobic membranes, is unaffected by the octanoic acid. The cross-sections of both used and unused membranes were examined in a scanning electron microscope (SEM). No visual difference was observed between the used and unused membrane samples. Analysis of the membranes with Fourier transform infrared spectroscopy (FTIR) showed that octanoic acid remained in the membranes even after thorough cleaning.},
  author       = {Lindau, J and Jönsson, Ann-Sofi and Wimmerstedt, Roland},
  issn         = {0376-7388},
  keyword      = {ULTRAFILTRATION,FOULING,ADSORPTION,FATTY ACID,CLEANING},
  language     = {eng},
  number       = {1-2},
  pages        = {9--16},
  publisher    = {Elsevier},
  series       = {Journal of Membrane Science},
  title        = {The influence of a low-molecular hydrophobic solute on the flux of poly-sulphone ultrafiltration membranes with different cut-off},
  url          = {http://dx.doi.org/10.1016/0376-7388(95)00072-K},
  volume       = {106},
  year         = {1995},
}