TY - GEN
T1 - Quantification of functional groups in the active layer of nanofiltration (NF) and reverse osmosis (RO) membranes
AU - Coronell, Orlando
AU - Marinas, Benito Jose
AU - Zhang, Xijing
AU - Cahill, David G
PY - 2007
Y1 - 2007
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:84874681653
SN - 9781583214930
T3 - 2007 Membrane Technology Conference and Exposition Proceedings
BT - 2007 Membrane Technology Conference and Exposition Proceedings
T2 - 2007 Membrane Technology Conference and Exposition
Y2 - 18 March 2007 through 21 March 2007
ER -