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dc.contributor.authorFu, Feng Jiang
dc.contributor.authorZhang, Sui
dc.contributor.authorChung, Neal Tai-Shung
dc.date.accessioned2016-01-19T13:22:53Z
dc.date.available2016-01-19T13:22:53Z
dc.date.issued2015-11
dc.identifier.citationFu F-J, Zhang S, Chung T-S (2015) Sandwich-structured hollow fiber membranes for osmotic power generation. Desalination 376: 73–81. Available: http://dx.doi.org/10.1016/j.desal.2015.08.018.
dc.identifier.issn0011-9164
dc.identifier.doi10.1016/j.desal.2015.08.018
dc.identifier.urihttp://hdl.handle.net/10754/594158
dc.description.abstractIn this work, a novel sandwich-structured hollow fiber membrane has been developed via a specially designed spinneret and optimized spinning conditions. With this specially designed spinneret, the outer layer, which is the most crucial part of the sandwich-structured membrane, is maintained the same as the traditional dual-layer membrane. The inner substrate layer is separated into two layers: (1) an ultra-thin middle layer comprising a high molecular weight polyvinylpyrrolidone (PVP) additive to enhance integration with the outer polybenzimidazole (PBI) selective layer, and (2) an inner-layer to provide strong mechanical strength for the membrane. Experimental results show that a high water permeability and good mechanical strength could be achieved without the expensive post treatment process to remove PVP which was necessary for the dual-layer pressure retarded osmosis (PRO) membranes. By optimizing the composition, the membrane shows a maximum power density of 6.23W/m2 at a hydraulic pressure of 22.0bar when 1M NaCl and 10mM NaCl are used as the draw and feed solutions, respectively. To our best knowledge, this is the best phase inversion hollow fiber membrane with an outer selective PBI layer for osmotic power generation. In addition, this is the first work that shows how to fabricate sandwich-structured hollow fiber membranes for various applications. © 2015 Elsevier B.V.
dc.description.sponsorshipNational University of Singapore[R-279-000-381-279]
dc.description.sponsorship“Membrane development for osmotic power generation, Part 1. Materials development and membrane fabrication”[1102-IRIS-11-01]
dc.publisherElsevier BV
dc.subjectPolybenzimidazole (PBI)
dc.subjectPressure retarded osmosis (PRO)
dc.subjectSandwich-structured
dc.titleSandwich-structured hollow fiber membranes for osmotic power generation
dc.typeArticle
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)
dc.identifier.journalDesalination
dc.contributor.institutionDepartment of Chemical and Biomolecular Engineering, National University of Singapore, Singapore
kaust.personZhang, Sui
kaust.personChung, Neal Tai-Shung


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