Microfiltration of micro-sized suspensions of boron-selective resin with PVDF membranes

Nawaf Bin Darwish, Victor Kochkodan, Nidal Hilal

    Research output: Contribution to journalArticle

    Abstract

    In this paper microfiltration (MF) separation of fractionized ion exchange Amberlite IRA743 resin from aqueous solutions using polyvinylidene fluoride membranes with the pore sizes of 0.1, 0.22 and 0.45 μm was studies. The effect of membrane pore size, transmembrane pressure, pH and concentration of the resin suspensions, presence of NaCl, MgCl2 and Na2SO4 salts on permeate flux has been evaluated. It was shown that the dominant membrane fouling mechanism during MF of the resin suspensions is formation of a cake layer from deposited resin on the membrane surface. The flux declines with increasing operating pressure and suspension concentration, while it increases with the presence of inorganic salts and feed pH. Changes in zeta potential of resin particles and the membranes as well as agglomeration and electroviscous effects should be considered while analyzing these findings. It was shown that the resin particles after boron sorption can be efficiently regenerated and reused in combined adsorption-microfiltration (AMF) process of boron removal from water, however a sharp drop in membrane flux during MF separation of the resin suspension should be further addressed to develop the efficient AMF procedure.

    Original languageEnglish (US)
    Pages (from-to)161-171
    Number of pages11
    JournalDesalination
    Volume403
    DOIs
    StatePublished - Feb 1 2017

    Fingerprint

    Boron
    Microfiltration
    boron
    resin
    Suspensions
    Resins
    membrane
    Membranes
    Fluxes
    Pore size
    Salts
    adsorption
    Adsorption
    inorganic salt
    Membrane fouling
    Magnesium Chloride
    Zeta potential
    polyvinylidene fluoride
    microfiltration
    agglomeration

    Keywords

    • Amberlite IRA743 resin
    • Boron removal
    • Microfiltration
    • PVDF membranes

    ASJC Scopus subject areas

    • Chemistry(all)
    • Chemical Engineering(all)
    • Materials Science(all)
    • Water Science and Technology
    • Mechanical Engineering

    Cite this

    Microfiltration of micro-sized suspensions of boron-selective resin with PVDF membranes. / Darwish, Nawaf Bin; Kochkodan, Victor; Hilal, Nidal.

    In: Desalination, Vol. 403, 01.02.2017, p. 161-171.

    Research output: Contribution to journalArticle

    Darwish, Nawaf Bin ; Kochkodan, Victor ; Hilal, Nidal. / Microfiltration of micro-sized suspensions of boron-selective resin with PVDF membranes. In: Desalination. 2017 ; Vol. 403. pp. 161-171.
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