Effect of microporous membrane properties and operating conditions on particle retention: Measurements and model studies

Mayur Ostwal, Xiaoyun Lu, Uwe Beuscher, John Pellegrino*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

ABSTRACT: Depth filtration with microporous membranes has been modelled by extending upon previous approaches of Polyakov[1–4] to incorporate pore size distribution, tortuosity, and cake buildup. The model-forecasts were benchmarked against filtration measurements performed with colloidal particles using three very different commercial membrane morphologies with the same nominal average pore size. The critical flux for each membrane was determined by a standard flux-stepping method. Particle retention and permeance were studied under constant flux or transmembrane pressure test conditions. Comparison of the forecast results with data shows reasonable qualitative agreement, but the results are very sensitive to the measurement uncertainties of the various properties.

Original languageEnglish (US)
Pages (from-to)1007-1021
Number of pages15
JournalSeparation Science and Technology (Philadelphia)
Volume51
Issue number6
DOIs
StatePublished - Apr 12 2016

Keywords

  • Critical flux
  • depth filtration
  • microfiltration
  • modelling

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Process Chemistry and Technology
  • Filtration and Separation

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