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dc.contributor.authorLe, Ngoc Lieu
dc.contributor.authorBettahalli Narasimha, Murthy Srivatsa
dc.contributor.authorNunes, Suzana Pereira
dc.contributor.authorChung, Neal Tai-Shung
dc.date.accessioned2016-01-18T08:16:28Z
dc.date.available2016-01-18T08:16:28Z
dc.date.issued2016-01-15
dc.identifier.citationOuter-selective thin film composite (TFC) hollow fiber membranes for osmotic power generation 2016 Journal of Membrane Science
dc.identifier.issn03767388
dc.identifier.doi10.1016/j.memsci.2016.01.027
dc.identifier.urihttp://hdl.handle.net/10754/593681
dc.description.abstractThe pressure-retarded osmosis (PRO) process is a green technique for power generation to respond the world's need of energy sustainability. In this study, we have developed the vital component of the process, i.e. membrane, in the configuration of the outer-selective thin-film composite (TFC) hollow fiber, which is more practical than other configurations in the real applications. The support layer morphology and the formation of the selective polyamide layer have been optimized for a good PRO performance. The results show that the bore fluid with higher amount of the solvent N-methyl-2-pyrrolidone leads to full finger-like hollow fibers, which provide higher flux but lower pressure tolerance. The addition of higher amount of diethylene glycol into the dope solution, improves the pore formation and suppresses the macrovoid formation, while properly lowering the take-up speed increases their wall thickness and pressure tolerance. A simple alcohol-pre-wetting approach on the fiber support leads to a smooth and thin polyamide layer, which is favorable for a high water flux and power density. Its efficiency follows this order: n-propanol>ethanol>methanol>water. The n-propanol pre-wetted TFC membrane can tolerate 17 bar with a peak power density of 9.59 W/m2 at room temperature, using 1 M NaCl solution as the draw solution and DI water as feed. This work demonstrates the potential of outer-selective TFC hollow fiber membranes for energy conversion via PRO process, provides useful database to fabricate suitable support morphology and raise a simple technique to practically form a thin and smooth polyamide layer.
dc.language.isoen
dc.publisherElsevier BV
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0376738816300242
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, 14 January 2016. DOI: 10.1016/j.memsci.2016.01.027
dc.subjectOuter-selective
dc.subjectHollow fiber membrane
dc.subjectPressure-retarded osmosis
dc.subjectWetting
dc.titleOuter-selective thin film composite (TFC) hollow fiber membranes for osmotic power generation
dc.typeArticle
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentEnvironmental Science and Engineering Program
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)
dc.identifier.journalJournal of Membrane Science
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)
kaust.personLe, Ngoc Lieu
kaust.personBettahalli Narasimha, Murthy Srivatsa
kaust.personNunes, Suzana Pereira
kaust.personChung, Neal Tai-Shung
refterms.dateFOA2018-01-14T00:00:00Z
dc.date.published-online2016-01-15
dc.date.published-print2016-05


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