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

    4 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

    • General Chemistry
    • General Chemical Engineering
    • Process Chemistry and Technology
    • Filtration and Separation

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