Information Services banner Edinburgh Research Archive The University of Edinburgh crest

Edinburgh Research Archive >
Engineering, School of >
Membrane Technology Research Group >
Membrane Technology Research Group publications >

Please use this identifier to cite or link to this item:

This item has been viewed 22 times in the last year. View Statistics

Files in This Item:

File Description SizeFormat
J77 ERA.pdf592.43 kBAdobe PDFView/Open
Title: Impact of organic matrix compounds on the retention of steroid hormone estrone by a ‘loose’ nanofiltration membrane
Authors: Schäfer, Andrea
Nghiem, L. D.
Meier, Anja
Neale, Peta A.
Issue Date: 2010
Citation: Schäfer, A.I. ; Nghiem, D.L. ; Meier, A. ; Neale, P.A. (2010) Impact of organic matrix compounds on the retention of steroid hormones in loose nanofiltration, Journal of Separation and Purification Technology, 73, 2, 179-187.
Publisher: Elsevier
Abstract: The impact of solute-solute interactions on retention and membrane adsorption of the micropollutant estrone was determined in the presence of surfactant sodium dodecyl sulphate (SDS), natural organic matter (NOM) and cellulose. A five cycle stirred cell protocol was used to study progressing saturation of a loose nanofiltration membrane with estrone. Adsorption was absent at high pH when the estrone molecule was dissociated, while at low and neutral pH the membrane was saturated after three filtration cycles and breakthrough was obvious. Increased estrone retention in the presence of cellulose was observed due to estrone-cellulose partitioning. SDS and NOM reduced estrone retention at low and neutral pH while no significant effect was visible at alkaline pH when solute-solute interactions were minimal. The adsorption and deposition of estrone onto the membrane was up to 50% of the total estrone in solution. Using experimental partition coefficients, the mass of estrone sorbed to organic matter as a function of pH was estimated. Results were similar to the total mass of estrone adsorbed to the membrane despite the partition coefficients being quantified at equilibrium (24 hours) while the experiment was (naturally) not. This study provides first quantifiable evidence of the impact of micropollutantorganic matter interactions in membrane filtration.
Keywords: nanofiltration
solute-solute interactions
Appears in Collections:Membrane Technology Research Group publications
Engineering publications

Items in ERA are protected by copyright, with all rights reserved, unless otherwise indicated.


Valid XHTML 1.0! Unless explicitly stated otherwise, all material is copyright © The University of Edinburgh 2013, and/or the original authors. Privacy and Cookies Policy