Login

Hydrotheek

Record nummer 2246121
Titel artikel Influence of membrane fouling by (pretreated) surface water on rejection of pharmaceutically active compounds (PhACs) by nanofiltration membranes
Auteur(s) Verliefde, A.R.D. ; Cornelissen, E.R. ; Heijman, S.G.J. ; Petrinic, I. ; Luxbacher, T. ; Amy, G.L. ; Van der Bruggen, B. ; Dijk, J.C. van
Tijdschrifttitel Journal of membrane science
Deel(Jaar)Nummer 330(2009)1-2
Paginering 90 - 103
Online full text
Publicatie type Artikel
Taal Engels
Toelichting (Engels) The effects of surface water pretreatment on membrane fouling and the influence of these different fouling types on the rejection of 21 neutral, positively and negatively charged pharmaceuticals were investigated for two nanofiltration membranes. Untreated surface water was compared with surface water, pretreated with a fluidized anionic ion exchange and surface water, pretreated with ultrafiltration. Fouling the nanofiltration membranes with anionic ion exchange resin effluent, resulted in the deposition of a mainly colloidal fouling layer, with a rough morphology. Fouling the nanofiltration membranes with ultrafiltration permeate, resulted in the deposition of a smooth fouling layer, containing mainly natural organic matter. The fouling layer on the nanofiltration membranes, caused by the filtration of untreated surface water, was a combination of both colloids and natural organic matter. Rejection of pharmaceuticals varied the most for the membranes, fouled with the anionic ion exchange effluent, and variations in rejection were caused by a combination of cake-enhanced concentration polarisation and electrostatic (charge) effects. For the membranes, fouled with the other two water types, variations in rejection were smaller and were caused by a combination of steric and electrostatic effects. Changes in membrane surface hydrophobicity due to fouling, changed the extent of partitioning and thus the rejection of hydrophobic, as well as hydrophilic pharmaceuticals.
Betrokken instanties Technische Universiteit Delft
KWR, Watercycle Research Institute
Reacties
Er zijn nog geen reacties. U kunt de eerste schrijven!
Schrijf een reactie

To support researchers to publish their research Open Access, deals have been negotiated with various publishers. Depending on the deal, a discount is provided for the author on the Article Processing Charges that need to be paid by the author to publish an article Open Access. A discount of 100% means that (after approval) the author does not have to pay Article Processing Charges.

For the approval of an Open Access deal for an article, the corresponding author of this article must be affiliated with Wageningen University & Research.