Characterization of commercial RO and UF modified and fouled membranes by means of ATR/FTIR

S. Belfer, J. Gilron, O. Kedem

Research output: Contribution to journalConference articlepeer-review

33 Scopus citations

Abstract

A simple grafting procedure was developed for surface modification of commercial polyamide reverse osmosis membranes. The modifications were monitored by spectral analysis. This technique was also used for study of membrane hydration. It was established that water interaction with surface functional groups of polyacrylonitrile (PAN) modified membrane produced very strong changes in the regions of C=O and C-O stretching vibrations. Adsorption and pressure experiments using Nahal Taninim feed water have been conducted on modified RO membranes. The membranes have been examined by ATR/FTIR for extent of adsorption of organic contaminants. Comparison with unmodified membranes shows that surface modification of the membranes resulted in drastic decrease in contaminant adsorption for some polymer grafts and increased ease in rinsing the contaminated surface.

Original languageEnglish
Pages (from-to)175-180
Number of pages6
JournalDesalination
Volume124
Issue number1-3
DOIs
StatePublished - 1 Nov 1999
EventProceedings of the 1999 European Conference on Desalination and the Environment - Las Palmas, Spain
Duration: 9 Nov 199912 Nov 1999

Keywords

  • ATR/FTIR study
  • Fouling
  • Hydration
  • Redox initiation
  • Surface modification

ASJC Scopus subject areas

  • Chemistry (all)
  • Chemical Engineering (all)
  • Materials Science (all)
  • Water Science and Technology
  • Mechanical Engineering

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