Ultrafiltration of oil-in-water emulsion

Comparison of ceramic and polymeric membranes

G. Vatai, Darko M. Krstić, András K. Koris, Igor L. Gáspár, Miodrag N. Tekić

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Ultrafiltration (UF) has been recognized as a highly attractive technique for the treatment of stable oil-in-water emulsions. This technique has proved to be more effective then conventional methods since it may produce a water phase of higher quality and an oil phase which can be recycled. However, low permeate fluxes due to membrane fouling still represent one of the main limitations for its extensive application. The aim of this paper is to further contribute to the investigations of mass transfer characteristics during UF of oil-in-water emulsions. The performance of a polymeric (polyaryletherketone) membrane and a ceramic (zirconia) membrane were compared under different parameters of the UF process. The permeate recirculation experiment showed that the ceramic membrane is sensitive to oil penetration at lower cross-flow velocities and higher transmembrane pressures. The optimal performance for the ceramic membrane was obtained at a lower feed flow rate and transmembrane pressure compared to the optimal values for the polymeric membrane. The comparison experiments with volumetric concentration of the feed were carried out at optimal operation conditions for each of the membranes in order to maximise their performance. While the polymeric membrane showed expected oil rejection variation consistent with surface layer formation, the ceramic membrane showed poor oil rejection at the beginning of the operation. Further investigations need to show if the poor initial oil rejection of the ceramic membrane can be reduced without losing proved advantages of ceramic membranes over polymeric membranes.

Original languageEnglish
Pages (from-to)162-168
Number of pages7
JournalDesalination and Water Treatment
Volume3
Issue number1-3
DOIs
Publication statusPublished - 2009

Fingerprint

Polymeric membranes
Ceramic membranes
Ultrafiltration
emulsion
ultrafiltration
ceramics
Emulsions
membrane
oil
Water
water
Membranes
Membrane fouling
Oils
comparison
Flow velocity
Zirconia
Mass transfer
Experiments
Flow rate

Keywords

  • Cross-flow ultrafiltration
  • Oil-in-water emulsion
  • Polyaryletherketone
  • Zirconia

ASJC Scopus subject areas

  • Pollution
  • Water Science and Technology
  • Ocean Engineering

Cite this

Ultrafiltration of oil-in-water emulsion : Comparison of ceramic and polymeric membranes. / Vatai, G.; Krstić, Darko M.; Koris, András K.; Gáspár, Igor L.; Tekić, Miodrag N.

In: Desalination and Water Treatment, Vol. 3, No. 1-3, 2009, p. 162-168.

Research output: Contribution to journalArticle

Vatai, G. ; Krstić, Darko M. ; Koris, András K. ; Gáspár, Igor L. ; Tekić, Miodrag N. / Ultrafiltration of oil-in-water emulsion : Comparison of ceramic and polymeric membranes. In: Desalination and Water Treatment. 2009 ; Vol. 3, No. 1-3. pp. 162-168.
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