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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  • Cite this

    Coronell, O., Marinas, B. J., Zhang, X., & Cahill, D. G. (2007). Quantification of functional groups in the active layer of nanofiltration (NF) and reverse osmosis (RO) membranes. In 2007 Membrane Technology Conference and Exposition Proceedings (2007 Membrane Technology Conference and Exposition Proceedings).