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    Novel adsorptive ultrafiltration membranes derived from polyvinyltetrazole-co-polyacrylonitrile for Cu(II) ions removal

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    Type
    Article
    Authors
    Kumar, Mahendra cc
    Shevate, Rahul
    Hilke, Roland
    Peinemann, Klaus-Viktor cc
    KAUST Department
    Advanced Membranes and Porous Materials Research Center
    Chemical Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2016-05-04
    Online Publication Date
    2016-05-04
    Print Publication Date
    2016-10
    Permanent link to this record
    http://hdl.handle.net/10754/608616
    
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    Abstract
    Novel adsorptive ultrafiltration membranes were manufactured from synthesized polyvinyltetrazole−co−polyacrylonitrile (PVT−co−PAN) by nonsolvent induced phase separation (NIPS). PVT−co−PAN with various degree of functionalization (DF) was synthesized via a [3+2] cycloaddition reaction at 60°C using a commercial PAN. PVT−co−PAN with varied DF was then explored to prepare adsorptive membranes. The membranes were characterized by surface zeta potential and static water contact angle measurements, scanning electron microscopy as well as atomic force microscopy (AFM) techniques. It was shown that PVT segments contributed to alter the pore size, charge and hydrophilic behavior of the membranes. The membranes became more negatively charged and hydrophilic after addition of PVT segments. The PVT segments in the membranes served as the major binding sites for adsorption of Cu(II) ions from aqueous solution. The maximum adsorption of Cu(II) ions by the membranes in static condition and in a continuous ultrafiltration of 10 ppm solution was attained at pH = 5. The adsorption data suggest that the Freundlich isotherm model describes well Cu(II) ions adsorption on the membranes from aqueous solution. The adsorption capacity obtained from the Freundlich isotherm model was 44.3 mg g−1; this value is higher than other membrane adsorption data reported in the literature. Overall, the membranes fabricated from PVT−co−PAN are attractive for efficient removal of heavy metal ions under the optimized conditions.
    Citation
    Novel adsorptive ultrafiltration membranes derived from polyvinyltetrazole-co-polyacrylonitrile for Cu(II) ions removal 2016 Chemical Engineering Journal
    Sponsors
    This research was carried out under funding from King Abdullah University of Science and Technology (KAUST, Saudi Arabia).
    Publisher
    Elsevier BV
    Journal
    Chemical Engineering Journal
    DOI
    10.1016/j.cej.2016.05.006
    Additional Links
    http://linkinghub.elsevier.com/retrieve/pii/S1385894716306192
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.cej.2016.05.006
    Scopus Count
    Collections
    Articles; Advanced Membranes and Porous Materials Research Center; Physical Science and Engineering (PSE) Division; Chemical Engineering Program

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