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dc.contributor.authorAkther, Nawshad
dc.contributor.authorLin, Yuqing
dc.contributor.authorWang, Shengyao
dc.contributor.authorPhuntsho, Sherub
dc.contributor.authorFu, Qiang
dc.contributor.authorGhaffour, NorEddine
dc.contributor.authorMatsuyama, Hideto
dc.contributor.authorShon, H.K.
dc.date.accessioned2020-11-10T05:56:12Z
dc.date.available2020-11-10T05:56:12Z
dc.date.issued2020-11-09
dc.date.submitted2020-08-01
dc.identifier.citationAkther, N., Lin, Y., Wang, S., Phuntsho, S., Fu, Q., Ghaffour, N., … Shon, H. K. (2020). In situ ultrathin silica layer formation on polyamide thin-film composite membrane surface for enhanced forward osmosis performances. Journal of Membrane Science, 118876. doi:10.1016/j.memsci.2020.118876
dc.identifier.issn0376-7388
dc.identifier.doi10.1016/j.memsci.2020.118876
dc.identifier.urihttp://hdl.handle.net/10754/665883
dc.description.abstractPolyamide (PA) based thin-film composite (TFC) membranes experience a high degree of organic fouling due to their hydrophobic and rough membrane surfaces during forward osmosis (FO) process. In this study, an ultrathin silica layer was grown in situ on the PA surface to enhance the antifouling property of TFC membrane by silicification process. Surface characterization confirmed the development of a silica layer on the PA surface. The superhydrophilic surface of silica-deposited TFC membrane (contact angle of 20°) with 3 h silicification time (STFC-3h) displayed a 53% higher water flux than the pristine TFC membrane without significantly affecting the membrane selectivity. The silica-modified TFC FO membranes also exhibited excellent stability when subjected to long-term cross-flow shear stress rinsing using deionized (DI) water, including exposure to salty, acidic and basic solutions. Moreover, the fouling tests showed that STFC-3h membrane lost only 4.2%, 9.1% and 12.1% of its initial flux with bovine serum albumin (BSA), humic acid (HA) and sodium alginate (SA), respectively, which are considerably lower compared to the pristine TFC FO membrane where flux losses were 18.7%, 23.2% and 37.2%, respectively. The STFC-3h membrane also revealed higher flux recovery ratio (FRR) of 99.6%, 96.9% and 94.4% with BSA, HA and SA, respectively, after physical cleaning than the pristine membrane (91.4%, 88.7%, and 81.2%, respectively). Overall, the in situ formation of an ultrathin hydrophilic silica layer on the PA surface reported in this work shows that the TFC membrane's water flux and antifouling property could be improved without diminishing the membrane selectivity.
dc.description.sponsorshipThe research reported in this paper was supported by the ARC Industrial Transformation Research Hub (IH170100009) and the King Abdullah University of Science and Technology (KAUST), Saudi Arabia through the Competitive Research Grant Program – CRG2017 (CRG6), Grant # URF/1/3404-01.
dc.publisherElsevier BV
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S0376738820314514
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, [, , (2020-11-09)] DOI: 10.1016/j.memsci.2020.118876 . © 2020. 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.titleIn situ ultrathin silica layer formation on polyamide thin-film composite membrane surface for enhanced forward osmosis performances
dc.typeArticle
dc.contributor.departmentEnvironmental Science and Engineering Program
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.identifier.journalJournal of Membrane Science
dc.rights.embargodate2022-11-09
dc.eprint.versionPost-print
dc.contributor.institutionSchool of Civil and Environmental Engineering, University of Technology Sydney (UTS), NSW, 2007, Australia.
dc.contributor.institutionResearch Center for Membrane and Film Technology, Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodaicho, Nada-ku, Kobe, 657-8501, Japan.
dc.identifier.pages118876
kaust.personGhaffour, Noreddine
kaust.grant.numberCRG2017
kaust.grant.numberURF/1/3404-01
dc.date.accepted2020-10-26
refterms.dateFOA2020-11-10T05:56:53Z
kaust.acknowledged.supportUnitCompetitive Research
dc.date.published-online2020-11-09
dc.date.published-print2020-11


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