Performance prediction of flat sheet commercial nanofiltration membrane using Donnan-Steric Pore Model

Danial Qadir, Rizwan Nasir, Hilmi Mukhtar, Fahim Uddin

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The rejection of sodium chloride (NaCl) and calcium chloride (CaCl2) single salt solutions were carried out for commercial nanofiltration NFDK membrane. Results showed that the NFDK membrane had a negative surface charge and had a higher observed rejection of 93.65% for calcium (Ca2+) ion and 78.27% for sodium (Na+) ions. Prediction of rejection for aqueous solutions of both salts was made using Donnan Steric Pore Model based on Extended Nernst-Planck Equation in addition to concentration polarization film theory. A MATLAB program was developed to execute the model calculations. Absolute Average Relative Error (% AARE) was found below 5% for real rejection of the NFDK membrane. This research could be used successfully to assess the membrane characterization parameter using a proposed procedure which can reduce the number of experiments.
    Original languageEnglish
    Pages (from-to)59-64
    JournalMembrane and Water Treatment
    Volume12
    Issue number2
    DOIs
    Publication statusPublished - 1 Mar 2021

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