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    Tannin-based thin-film composite membranes for solvent nanofiltration

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    1-s2.0-S0376738817307640-main.pdf
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    Description:
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    Type
    Article
    Authors
    Pérez-Manríquez, Liliana cc
    Neelakanda, Pradeep
    Peinemann, Klaus-Viktor cc
    KAUST Department
    Advanced Membranes and Porous Materials Research Center
    Bioscience Program
    Chemical Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2017-06-28
    Online Publication Date
    2017-06-28
    Print Publication Date
    2017-11
    Permanent link to this record
    http://hdl.handle.net/10754/625188
    
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    Abstract
    The natural oligomer tannic acid was used as a reactant for an interfacial polymerisation on top of a crosslinked polyacrylonitrile (PAN) membrane. The PAN membrane was soaked with the aqueous tannic acid solution and contacted with a dilute solution of teraphtaloylchloride in hexane. Since both layers, the PAN support and the thin tannin-based layer, are highly crosslinked, the resulting thin film composite membrane is stable in harsh solvent environments such as N-Methyl-2-pyrrolidone (NMP). NMP permeances of up to 0.09L/m2 h bar with a molecular weight cut-off of approximately 800g/mol were obtained. The exceptional stability in NMP and the incorporation of natural compounds like tannic acid for the manufacture of organic solvent nanofiltration membranes provides a cost-effective alternative for industrial separations due to the simplicity of the interfacial reaction and the replacement of the commonly applied toxic aromatic amines. The scale up of the manufacturing process is not difficult; the low price of the natural tannic acid is another advantage.
    Citation
    Pérez-Manríquez L, Neelakanda P, Peinemann K-V (2017) Tannin-based thin-film composite membranes for solvent nanofiltration. Journal of Membrane Science 541: 137–142. Available: http://dx.doi.org/10.1016/j.memsci.2017.06.078.
    Sponsors
    The authors acknowledge Dr. Long Chen for the AFM analysis as well as Dr. Ali R. Behzad for the SEM images. This work was supported by King Abdullah University of Science and Technology (KAUST).
    Publisher
    Elsevier BV
    Journal
    Journal of Membrane Science
    DOI
    10.1016/j.memsci.2017.06.078
    Additional Links
    http://www.sciencedirect.com/science/article/pii/S0376738817307640
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.memsci.2017.06.078
    Scopus Count
    Collections
    Articles; Bioscience Program; Advanced Membranes and Porous Materials Research Center; Physical Science and Engineering (PSE) Division; Chemical Engineering Program

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