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    Alginate-based membranes: Paving the way for green organic solvent nanofiltration

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    Revised-JMS-Alginate-based membranes JA TP kaust repository.pdf
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    Description:
    Accepted manuscript
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    Type
    Article
    Authors
    Aburabie, Jamaliah H.
    Puspasari, Tiara cc
    Peinemann, Klaus-Viktor cc
    KAUST Department
    Advanced Membranes and Porous Materials Research Center
    Chemical Engineering Program
    Physical Science and Engineering (PSE) Division
    KAUST Grant Number
    BAS/1/1332-01-01
    Date
    2019-10-26
    Online Publication Date
    2019-10-26
    Print Publication Date
    2019-10
    Embargo End Date
    2021-01-01
    Permanent link to this record
    http://hdl.handle.net/10754/660494
    
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    Abstract
    In this study, green bio-membranes were investigated. Alginate membranes were prepared by crosslinking of sodium alginate in calcium chloride aqueous solution. By fabricating membranes simply using three abundant cheap materials i.e. sodium alginate, salt and water, we have demonstrated membranes with acceptable performance for OSN with excellent chemical stability. Membranes prepared on three different polymeric supports (PAN, crosslinked PAN and Cellulose) showed similar performance. The alginate membranes were also spun coated on glass plate and laminated on alumina support. Great chemical stability was observed towards various solvents including dimethylformamide and dimethylsulfoxide. Characterization tests with FTIR, SEM, AFM and contact angle were carried out. Using same support, many parameters were explored such as the alginate concentration and the post treatment such as drying, crosslinking or precipitating in non-solvent. The range of the membranes permeance was 0.08–1.8 L/m2 h bar depending on conditions used. The nanofiltration experiments revealed a molecular weight cut off of about 1200 g/mol when tested with dyes such as Methyl Orange, Brilliant Blue and vitamin B12 in methanol. We initiated the preparation of fully green organic solvent nanofiltration membranes using green routes by preparing alginate selective layer on top of cellulose support. This study demonstrates that alginate membranes can be a promising candidate for green organic solvent nanofiltration.
    Citation
    Aburabie, J. H., Puspasari, T., & Peinemann, K.-V. (2019). Alginate-based membranes: Paving the way for green organic solvent nanofiltration. Journal of Membrane Science, 117615. doi:10.1016/j.memsci.2019.117615
    Sponsors
    The surface of the studied membranes was characterized by high-resolution scanning electron microscope (Magellan) or (FEI Nova Nano) at 2 kV. The samples for cross-section images were obtained by fracturing the membrane in liquid nitrogen. Prior to the SEM imaging the samples were sputtered with a 3 nm thick (Magellan) or 5 nm (Nova Nano) Iridium coating using a Quorum Q150T S sputter coater under an argon atmosphere to achieve the necessary conductivity. The Magellan microscope was used to take the cross-section SEM images of the freestanding membranes; the samples were fractured carefully without liquid nitrogen since the support was too brittle to handle.The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST) under award number BAS/1/1332-01-01.
    Publisher
    Elsevier BV
    Journal
    Journal of Membrane Science
    DOI
    10.1016/j.memsci.2019.117615
    Additional Links
    https://linkinghub.elsevier.com/retrieve/pii/S0376738819322124
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.memsci.2019.117615
    Scopus Count
    Collections
    Articles; Advanced Membranes and Porous Materials Research Center; Physical Science and Engineering (PSE) Division; Chemical Engineering Program

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