Quantification of functional groups in the active layer of nanofiltration (NF) and reverse osmosis (RO) membranes

Orlando Coronell, Benito Jose Marinas, Xijing Zhang, David G Cahill

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The concentration of positive and negative functional groups (FGs) in nanofiltration (NF) and reverse osmosis membranes (RO) have been successfully quantified as a function of pH by ion probing using Rutherford Backscattering Spectrometry (RBS). The concentration of FGs was higher for the NF (TFC-S®) than for the RO (FT30®) membrane tested within the pH range of 3.5-10.3 studied. The isoelectric point obtained from FGs concentration measurements of TFC-S®(NF) membrane was found to be pH∼5.5, consistent with values reported in the literature for polyamide NF membranes.

Original languageEnglish (US)
Title of host publication2007 Membrane Technology Conference and Exposition Proceedings
StatePublished - Dec 1 2007
Event2007 Membrane Technology Conference and Exposition - Tampa, FL, United States
Duration: Mar 18 2007Mar 21 2007

Publication series

Name2007 Membrane Technology Conference and Exposition Proceedings

Other

Other2007 Membrane Technology Conference and Exposition
CountryUnited States
CityTampa, FL
Period3/18/073/21/07

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

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