Journal
DESALINATION
Volume 147, Issue 1-3, Pages 217-221Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0011-9164(02)00537-4
Keywords
adsorption; contact angle; concentration polarisation; mass transfer; modelling; nanofiltration; surfactant
Categories
Ask authors/readers for more resources
Nanofiltration (NF) membranes are capable of separating surfactants from aqueous solutions with very high retentions. For the anionic surfactant sodium dodecylether sulfate (SDES) retentions exceeding 99.9% referring to the feed concentration have been found. The decrease of the permeate flux compared to the pure water flux in membrane filtration of solutions with surfactants is difficult to predict. In order to simplify membrane selection for a separation problem, an attempt is made to correlate flux decline due to adsorption to the contact angle measured on UF/NF membranes. The vague dependence shown cannot replace membrane screening. In the second part of the paper, a mass transfer model for NF of surfactant solutions based on the extended Nernst-Planck equation is presented. Convective mass transfer of the solute is included in the model, as well as the influence of adsorption of surfactant and concentration polarisation.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available