High Concentration Protein Ultrafiltration

A Comparative Fouling Assessment

Research output: Contribution to journalConference article

Abstract

In this paper, the predominant fouling mechanism via pH manipulation in gelatin ultrafiltration (UF) at constant operating pressure was studied. Two 30 kDa molecular weight cut off (MWCO) UF membranes with different hydrophilic/hydrophobic properties were tested at solution pH near gelatin isoelectric point (IEP), pH below and above gelatin's IEP. The resistance-in-series model was used to determine quantitatively the contribution of each filtration resistance occurred during gelatin UF. The governing fouling mechanisms were investigated using classical blocking laws. The results demonstrated that concentration polarization remain as dominant fouling resistance in gelatin UF, but exceptional case was observed at pH away from gelatin's IEP, showing that combined reversible and irreversible fouling resistances contributed around 57% and 37%, respectively to the overall fouling resistances. Under all experimental condition tested, permeate flux decline was accurately predicted by all the models studied. Fouling profile was fitted well with "Standard Blocking", "Intermediate Blocking" and "Cake Filtration" model for regenerated cellulose acetate (RCA) membrane and "Cake Filtration" model for polyethersulphone (PES) membrane.

Original languageEnglish
Article number012056
JournalIOP Conference Series: Materials Science and Engineering
Volume358
Issue number1
DOIs
Publication statusPublished - 22 May 2018
Event3rd International Conference on Global Sustainability and Chemical Engineering, ICGSCE 2017 - Putrajaya, Malaysia
Duration: 15 Feb 201716 Feb 2017

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Ultrafiltration
Gelatin
Fouling
Proteins
Membranes
Cellulose
Molecular weight
Polarization
Fluxes

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

Cite this

High Concentration Protein Ultrafiltration : A Comparative Fouling Assessment. / Lim, Y. P.; Mohammad, Abdul Wahab.

In: IOP Conference Series: Materials Science and Engineering, Vol. 358, No. 1, 012056, 22.05.2018.

Research output: Contribution to journalConference article

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