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dc.contributor.authorFalca, Gheorghe
dc.contributor.authorMusteata, Valentina-Elena
dc.contributor.authorBehzad, Ali Reza
dc.contributor.authorChisca, Stefan
dc.contributor.authorNunes, Suzana Pereira
dc.date.accessioned2019-07-30T07:44:16Z
dc.date.available2019-07-30T07:44:16Z
dc.date.issued2019-05-08
dc.identifier.doi10.1016/j.memsci.2019.05.009
dc.identifier.urihttp://hdl.handle.net/10754/656228
dc.description.abstractCellulose is the most abundant biopolymer, but it is difficult to process due to its low solubility in most of the solvents. In this work, we demonstrate the preparation, of self-standing and defect-free cellulose hollow fiber membranes made by a sustainable process for filtration in organic solvent medium. The hollow fibers were made by the simple spinning technique using ionic liquids as a solvent. The spun solutions were prepared with three different ionic liquids, having imidazolium-based cations and acetate or phosphates as anions. We used X-ray diffraction to evaluate the influence of the different ionic liquids on the crystallinity of the cellulose and the membrane solvent stability. We used cryo-scanning electron microscopy to investigate the porous structure of the hydrated membranes, distinguishing it from that of the dry membranes. The hollow fiber membrane performance was studied using dyes in water and ethanol solutions. The rejection of Congo Red (696 g mol−1) was higher than 90% in ethanol and even closer to 100% in water. The best results were obtained by using 1-ethyl-3-methyimidazolium diethyl phosphate and 1,3-dimethylimidazolium dimethyl phosphate. Our results indicate that by using greener process is possible to obtain solvent resistant cellulose hollow fibers.
dc.description.sponsorshipThe work was sponsored by the King Abdullah University of Science and Technology, grant REP/1/3848-01-01 and URF/1/3441-01-01.
dc.publisherElsevier BV
dc.relation.urlhttps://www.sciencedirect.com/science/article/pii/S0376738819305290
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Journal of Membrane Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Membrane Science, [[Volume], [Issue], (2019-05-07)] DOI: 10.1016/j.memsci.2019.05.009 . © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectCellulose
dc.subjectHollow fibers
dc.subjectIonic liquids
dc.subjectOrganic solvent resistant membranes
dc.titleCellulose hollow fibers for organic resistant nanofiltration
dc.typeArticle
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentElectron Microscopy
dc.contributor.departmentEnvironmental Science and Engineering
dc.contributor.departmentEnvironmental Science and Engineering Program
dc.identifier.journalJournal of Membrane Science
dc.rights.embargodate2021-05-07
dc.eprint.versionPost-print
kaust.personFalca, Gheorghe
kaust.personMusteata, Valentina-Elena
kaust.personBehzad, Ali Reza
kaust.personChisca, Stefan
kaust.personNunes, Suzana Pereira
kaust.grant.numberREP/1/3848-01-01
kaust.grant.numberURF/1/3441-01-01
dc.date.published-online2019-05-08
dc.date.published-print2019-09


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