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    Cellulose multilayer Membranes manufacture with Ionic liquid

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    Type
    Article
    Authors
    Livazovic, Sara cc
    Li, Z.
    Behzad, Ali Reza
    Peinemann, Klaus-Viktor cc
    Nunes, Suzana Pereira cc
    KAUST Department
    Advanced Membranes and Porous Materials Research Center
    Advanced Nanofabrication, Imaging and Characterization Core Lab
    Ali I. Al-Naimi Petroleum Engineering Research Center (ANPERC)
    Biological and Environmental Sciences and Engineering (BESE) Division
    Chemical Engineering Program
    Electron Microscopy
    Environmental Science and Engineering Program
    Nanostructured Polymeric Membrane Lab
    Physical Science and Engineering (PSE) Division
    Water Desalination and Reuse Research Center (WDRC)
    Date
    2015-05-09
    Online Publication Date
    2015-05-09
    Print Publication Date
    2015-09
    Permanent link to this record
    http://hdl.handle.net/10754/553013
    
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    Abstract
    Membrane processes are considered energy-efficient for water desalination and treatment. However most membranes are based on polymers prepared from fossil petrochemical sources. The development of multilayer membranes for nanofiltration and ultrafiltration, with thin selective layers of naturally available cellulose has been hampered by the availability of non-aggressive solvents. We propose the manufacture of cellulose membranes based on two approaches: (i) silylation, coating from solutions in tetrahydrofuran, followed by solvent evaporation and cellulose regeneration by acid treatment; (ii) casting from solution in 1-ethyl-3-methylimidazolum acetate ([C2mim]OAc), an ionic liquid, followed by phase inversion in water. By these methods porous supports could be easily coated with semi-crystalline cellulose. The membranes were hydrophilic with contact angles as low as 22.0°, molecular weight cut-off as low as 3000 g mol-1 with corresponding water permeance of 13.8 Lm−2 h−1 bar−1. Self-standing cellulose membranes were also manufactured without porous substrate, using only ionic liquid as green solvent. This membrane was insoluble in water, tetrahydrofuran, hexane, N,N-dimethylformamide, 1-methyl-2-pyrrolidinone and N,N-dimethylacetamide.
    Citation
    Cellulose multilayer Membranes manufacture with Ionic liquid 2015 Journal of Membrane Science
    Publisher
    Elsevier BV
    Journal
    Journal of Membrane Science
    DOI
    10.1016/j.memsci.2015.05.009
    Additional Links
    http://linkinghub.elsevier.com/retrieve/pii/S0376738815004202
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.memsci.2015.05.009
    Scopus Count
    Collections
    Articles; Ali I. Al-Naimi Petroleum Engineering Research Center (ANPERC); Biological and Environmental Sciences and Engineering (BESE) Division; Advanced Membranes and Porous Materials Research Center; Environmental Science and Engineering Program; Imaging and Characterization Core Lab; Physical Science and Engineering (PSE) Division; Chemical Engineering Program; Water Desalination and Reuse Research Center (WDRC)

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