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dc.contributor.authorNg, Daniel Yee Fanen_US
dc.contributor.authorWu, Bingen_US
dc.contributor.authorChen, Yunfengen_US
dc.contributor.authorDong, Zhilien_US
dc.contributor.authorWang, Rongen_US
dc.identifier.citationNg, D. Y. F., Wu, B., Chen, Y., Dong, Z., & Wang, R. (2019). A novel thin film composite hollow fiber osmotic membrane with one-step prepared dual-layer substrate for sludge thickening. Journal of Membrane Science, 575, 98–108. doi:10.1016/j.memsci.2019.01.007en_US
dc.description.abstractForward osmosis (FO) membranes have received attention as an energy-efficient and low-cost technique in stream concentrating processes. In this work, a novel double-skinned hollow fiber thin film composite (TFC) FO membrane has been successfully fabricated, which consists of a one-step prepared dual layer substrate and a thin inner selective layer formed via interfacial polymerization. The substrate consists of a relatively dense ultrafiltration (UF) outer layer and a porous UF inner layer, both of which were constructed from polyethersulfone (PES) as the substrate material by using dual-layer co-extrusion technique. Compared to the commercial and reported double-skinned FO membranes, the FO membrane developed in this work exhibited a higher permeate flux with humic acid solution as feed. Furthermore, the double-skinned FO membrane was applied in concentrating activated sludge using 0.5 M NaCl as draw solution, and a permeate flux at 5.4 L/m2h was achieved after 5 h operation, which was higher than or comparable to those of the reported FO membranes. Membrane autopsies and foulant analysis suggested that the dense UF skin layer helped to reject greater-sized organic foulants (> 300 Da). This study shed light on the important fabrication features and promising application of the double-skinned hollow fiber TFC FO membrane in sludge concentration.en_US
dc.description.sponsorshipEconomic Development Board (EDB)en_US
dc.relation.ispartofJournal of Membrane Scienceen_US
dc.rights© 2019 Elsevier B.V. All rights reserved. This paper was published in Journal of Membrane Science and is made available with permission of Elsevier B.V.en_US
dc.subjectEngineering::Civil engineeringen_US
dc.titleA novel thin film composite hollow fiber osmotic membrane with one-step prepared dual-layer substrate for sludge thickeningen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Civil and Environmental Engineeringen_US
dc.contributor.schoolSchool of Materials Science and Engineeringen_US
dc.contributor.schoolInterdisciplinary Graduate School (IGS)en_US
dc.contributor.researchNanyang Environment and Water Research Instituteen_US
dc.contributor.researchSingapore Membrane Technology Centreen_US
dc.description.versionAccepted versionen_US
dc.subject.keywordsCo-extrusion Techniqueen_US
dc.subject.keywordsForward Osmosisen_US
dc.description.acknowledgementThe Economic Development Board (EDB) of Singapore is acknowledged for funding the Singapore Membrane Technology Centre (SMTC), Nanyang Technological University.en_US
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