1504369

AWWA MTC64516

Quantification of Functional Groups in the Active Layer of Nanofiltration (NF) and Reverse Osmosis (RO) Membranes

Conference Proceeding by American Water Works Association , 03/01/2007

Coronell, Orlando; Marinas, Benito J.; Zhang, Xijing; Cahill, David G.

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Full Description

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. Includes 5 references, figures.
 

Product Details

Edition:
Vol. - No.
Published:
03/01/2007
Number of Pages:
5
File Size:
1 file , 350 KB
Note:
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