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Flux reduction of ultrafiltration membranes with different cut-off due to adsorption of a low-molecular-weight hydrophobic solute-correlation between flux decline and pore size

Lindau, J; Jönsson, Ann-Sofi LU and Bottino, A (1998) In Journal of Membrane Science 149(1). p.11-20
Abstract
The flux of ultrafiltration membranes may be severely reduced when treating low-molecular-weight hydrophobic solutes even though the cut-off of the membrane is orders of magnitudes greater than the size of the solute molecules. In this investigation, the flux reduction was correlated to the membrane pore size using octanoic acid as a model substance. As a comparison, the pore size was also determined by measuring the retention of a dextran solution and by using the liquid-liquid displacement porometry method (LLDP). The membranes used were four asymmetric polysulphone and polyethersulphone membranes with nominal molecular weight cut-off (NMWCO) between 6 and 50 kDa. It is shown that the use of a low-molecular-weight hydrophobic solute may... (More)
The flux of ultrafiltration membranes may be severely reduced when treating low-molecular-weight hydrophobic solutes even though the cut-off of the membrane is orders of magnitudes greater than the size of the solute molecules. In this investigation, the flux reduction was correlated to the membrane pore size using octanoic acid as a model substance. As a comparison, the pore size was also determined by measuring the retention of a dextran solution and by using the liquid-liquid displacement porometry method (LLDP). The membranes used were four asymmetric polysulphone and polyethersulphone membranes with nominal molecular weight cut-off (NMWCO) between 6 and 50 kDa. It is shown that the use of a low-molecular-weight hydrophobic solute may provide a rapid and simple method of characterising hydrophobic ultrafiltration membranes, both regarding their sensitivity to flux reduction due to adsorption, and their pore-size distribution (C) 1998 Published by Elsevier Science B.V. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
fouling, capillary induced phase separation, hydrophobic solute, pore, size, membrane characterization
in
Journal of Membrane Science
volume
149
issue
1
pages
11 - 20
publisher
Elsevier
external identifiers
  • wos:000076723600001
  • scopus:0344625373
ISSN
0376-7388
DOI
10.1016/S0376-7388(98)00161-6
language
English
LU publication?
yes
id
e61b81a6-ebf5-4f3c-b7cb-c2fe688148ec (old id 3915704)
date added to LUP
2013-07-02 11:09:48
date last changed
2017-08-20 04:23:41
@article{e61b81a6-ebf5-4f3c-b7cb-c2fe688148ec,
  abstract     = {The flux of ultrafiltration membranes may be severely reduced when treating low-molecular-weight hydrophobic solutes even though the cut-off of the membrane is orders of magnitudes greater than the size of the solute molecules. In this investigation, the flux reduction was correlated to the membrane pore size using octanoic acid as a model substance. As a comparison, the pore size was also determined by measuring the retention of a dextran solution and by using the liquid-liquid displacement porometry method (LLDP). The membranes used were four asymmetric polysulphone and polyethersulphone membranes with nominal molecular weight cut-off (NMWCO) between 6 and 50 kDa. It is shown that the use of a low-molecular-weight hydrophobic solute may provide a rapid and simple method of characterising hydrophobic ultrafiltration membranes, both regarding their sensitivity to flux reduction due to adsorption, and their pore-size distribution (C) 1998 Published by Elsevier Science B.V. All rights reserved.},
  author       = {Lindau, J and Jönsson, Ann-Sofi and Bottino, A},
  issn         = {0376-7388},
  keyword      = {fouling,capillary induced phase separation,hydrophobic solute,pore,size,membrane characterization},
  language     = {eng},
  number       = {1},
  pages        = {11--20},
  publisher    = {Elsevier},
  series       = {Journal of Membrane Science},
  title        = {Flux reduction of ultrafiltration membranes with different cut-off due to adsorption of a low-molecular-weight hydrophobic solute-correlation between flux decline and pore size},
  url          = {http://dx.doi.org/10.1016/S0376-7388(98)00161-6},
  volume       = {149},
  year         = {1998},
}