Concentration of potassium cations in the permeate solution in the presence of N,N-dimethyl-N-2-propenyl-2-propen-1-aminium chloride homopolymer using dead-end nano-or ultrafiltration

P. Prokopovich, V. Starov, R. G. Holdich, Nidal Hilal

    Research output: Contribution to journalArticle

    Abstract

    The investigation is based on the nano-or ultrafiltration of inorganic salts in the presence of a polyelectrolyte in the feed solution. Cellulose acetate membranes are selected with a pore size of 10-20 nm. The membranes are imaged using atomic force microscope. The membrane is completely impermeable to the polyelectrolyte. Polyelectrolyte concentrations are taken in the range of 0.5-1 g/l to avoid a gel layer formation over the membrane. It is discovered that, at such low polyelectrolyte concentration, inorganic salt concentration in the permeate is higher than in the feed solution. This process therefore deviates from conventional membrane separation processes, where the permeate salt concentration is lower or equal to the salt concentration in the feed solution. It is shown that during the nano-or ultrafiltration of inorganic salts in the presence of polyelectrolyte, the ratio of salt concentration in the permeate to feed increases when the initial salt concentration in the feed solution is low. Concentration polarization has a negative impact on this concentrating effect. In the case of this investigation, KCl, KNO3, K2SO4 are taken as inorganic salts, N,N-dimethyl-N-2- propenyl-2-propen-1-aminium chloride homopolymer is selected as a polyelectrolyte.

    Original languageEnglish (US)
    Pages (from-to)211-216
    Number of pages6
    JournalColloid Journal
    Volume68
    Issue number2
    DOIs
    StatePublished - Mar 1 2006

    Fingerprint

    Ultrafiltration
    Homopolymerization
    Potassium
    Cations
    potassium
    Salts
    Polyelectrolytes
    Positive ions
    chlorides
    salts
    cations
    membranes
    Membranes
    low concentrations
    poly-N,N-dimethyl-N,N-diallylammonium chloride
    concentrating
    cellulose
    Pore size
    acetates
    Cellulose

    ASJC Scopus subject areas

    • Physical and Theoretical Chemistry
    • Colloid and Surface Chemistry

    Cite this

    Concentration of potassium cations in the permeate solution in the presence of N,N-dimethyl-N-2-propenyl-2-propen-1-aminium chloride homopolymer using dead-end nano-or ultrafiltration. / Prokopovich, P.; Starov, V.; Holdich, R. G.; Hilal, Nidal.

    In: Colloid Journal, Vol. 68, No. 2, 01.03.2006, p. 211-216.

    Research output: Contribution to journalArticle

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