Comparison of two different UV-grafted nanofiltration membranes prepared for reduction of humic acid fouling using acrylic acid and N-vinylpyrrolidone

M. N Abu Seman, M. Khayet, N. Hilal

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

UV-photografting using two different monomers, acrylic acid and N-vinylpyrrolidone, with different concentrations in an aqueous solution and various irradiation times were studied. Irreversible fouling of both the un-grafted polyethersulfone and the UV-grafted membranes have been studied using humic acid model solutions at two different pH values; 7 and 3. It was observed that the UV-grafted membranes exhibited practically less tendency to be irreversibly fouled by humic acid molecules at pH 7. However at the acidic condition of pH 3, some membranes exhibited a higher degree of fouling more than the un-grafted membrane, especially for membranes with higher roughness values. The smaller pore size generated after UV-grafting of polyethersulfone membrane did not significantly affect humic acid removal due to the larger humic acid molecular size.

Original languageEnglish
Pages (from-to)19-29
Number of pages11
JournalDesalination
Volume287
DOIs
Publication statusPublished - 15 Nov 2012
Externally publishedYes

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Keywords

  • Acrylic acid
  • Humic acid
  • N-vinylpyrrolidone
  • Polyethersulfone
  • UV-photografting

ASJC Scopus subject areas

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

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