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Influence of the concentration of a low-molecular organic solute on the flux reduction of a polyethersulphone ultrafiltration membrane

Jönsson, Ann-Sofi LU ; Lindau, J; Wimmerstedt, Roland LU ; Brinck, J and Jönsson, Bengt LU (1997) In Journal of Membrane Science 135(1). p.117-128
Abstract
Drastic flux reductions are sometimes encountered during ultrafiltration of solutes much smaller than the membrane pores. This usually occurs during ultrafiltration of hydrophobic, low-molecular solutes, such as fatty acids, alcohols and alkanes. The influence of the concentration of a carboxylic acid, octanoic acid, on the flux of a polyethersulphone membrane was studied in this investigation. The concentration was found to have a marked influence on the flux. The flux reduction was moderate at low concentrations, but became severe above a certain, critical concentration. Two fur-reducing mechanisms were evaluated; reduction of the effective pore radius by adsorption of solute molecules on the pore walls, and blocking of pores by... (More)
Drastic flux reductions are sometimes encountered during ultrafiltration of solutes much smaller than the membrane pores. This usually occurs during ultrafiltration of hydrophobic, low-molecular solutes, such as fatty acids, alcohols and alkanes. The influence of the concentration of a carboxylic acid, octanoic acid, on the flux of a polyethersulphone membrane was studied in this investigation. The concentration was found to have a marked influence on the flux. The flux reduction was moderate at low concentrations, but became severe above a certain, critical concentration. Two fur-reducing mechanisms were evaluated; reduction of the effective pore radius by adsorption of solute molecules on the pore walls, and blocking of pores by capillary condensation. The adsorption of octanoic acid on a hydrophobic solid surface was studied by null ellipsometry. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
fouling, ultrafiltration, adsorption, capillary condensation
in
Journal of Membrane Science
volume
135
issue
1
pages
117 - 128
publisher
Elsevier
external identifiers
  • wos:A1997YC67400012
  • scopus:0343852796
ISSN
0376-7388
DOI
10.1016/S0376-7388(97)00135-X
language
English
LU publication?
yes
id
7583e680-afc8-4f0f-b82f-cb95e851bec2 (old id 3915723)
date added to LUP
2013-07-02 10:58:27
date last changed
2017-01-01 06:57:20
@article{7583e680-afc8-4f0f-b82f-cb95e851bec2,
  abstract     = {Drastic flux reductions are sometimes encountered during ultrafiltration of solutes much smaller than the membrane pores. This usually occurs during ultrafiltration of hydrophobic, low-molecular solutes, such as fatty acids, alcohols and alkanes. The influence of the concentration of a carboxylic acid, octanoic acid, on the flux of a polyethersulphone membrane was studied in this investigation. The concentration was found to have a marked influence on the flux. The flux reduction was moderate at low concentrations, but became severe above a certain, critical concentration. Two fur-reducing mechanisms were evaluated; reduction of the effective pore radius by adsorption of solute molecules on the pore walls, and blocking of pores by capillary condensation. The adsorption of octanoic acid on a hydrophobic solid surface was studied by null ellipsometry.},
  author       = {Jönsson, Ann-Sofi and Lindau, J and Wimmerstedt, Roland and Brinck, J and Jönsson, Bengt},
  issn         = {0376-7388},
  keyword      = {fouling,ultrafiltration,adsorption,capillary condensation},
  language     = {eng},
  number       = {1},
  pages        = {117--128},
  publisher    = {Elsevier},
  series       = {Journal of Membrane Science},
  title        = {Influence of the concentration of a low-molecular organic solute on the flux reduction of a polyethersulphone ultrafiltration membrane},
  url          = {http://dx.doi.org/10.1016/S0376-7388(97)00135-X},
  volume       = {135},
  year         = {1997},
}