Studies on the surface properties of mixed-matrix membrane and its antifouling properties for humic acid removal

Teow Yeit Haan, A. L. Ahmad, J. K. Lim, B. S. Ooi

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

A major factor limiting the use of ultrafiltration (UF) membrane in water treatment process is the membrane fouling by natural organic matter such as humic acid (HA). In this work, neat PVDF and PVDF/TiO2 mixed-matrix membranes were prepared and compared in terms of their antifouling properties. Two commercial types of TiO2 namely PC-20 and P25 were embedded to prepare the mixed matrix membranes via in situ colloidal precipitation method. The contact angles for the mixed-matrix membranes were slightly reduced while the zeta potential was increased (more negatively charged) compared with the neat membrane. Filtration of HA with the presence of Ca2+ demonstrated that mixed-matrix membrane could significantly mitigate the fouling tendency compared with the neat membrane with flux ratio (J/J0) of 0.65, 0.70, and 0.82 for neat PVDF membrane, PVDF/TiO2 mixed-matrix membrane embedded with P25 and PC-20, respectively. PC-20 with higher anatase polymorphs exhibited better antifouling properties due to its hydrophilicity nature.

Original languageEnglish
Pages (from-to)3184-3192
Number of pages9
JournalJournal of Applied Polymer Science
Volume128
Issue number5
DOIs
Publication statusPublished - 5 Jun 2013
Externally publishedYes

Fingerprint

Humic Substances
Surface properties
Membranes
Membrane fouling
Hydrophilicity
Ultrafiltration
Zeta potential
Fouling
Polymorphism
Water treatment
Biological materials
Titanium dioxide
Contact angle
Fluxes

Keywords

  • membranes
  • nanoparticles
  • nanowires and nanocrystals
  • particle size distribution
  • phase separation

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics
  • Surfaces, Coatings and Films
  • Chemistry(all)

Cite this

Studies on the surface properties of mixed-matrix membrane and its antifouling properties for humic acid removal. / Yeit Haan, Teow; Ahmad, A. L.; Lim, J. K.; Ooi, B. S.

In: Journal of Applied Polymer Science, Vol. 128, No. 5, 05.06.2013, p. 3184-3192.

Research output: Contribution to journalArticle

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