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dc.contributor.authorXiong, Jun Ying
dc.contributor.authorCai, Dong Jun
dc.contributor.authorChong, Qing Yu
dc.contributor.authorLee, Swin Hui
dc.contributor.authorChung, Neal Tai-Shung
dc.date.accessioned2016-12-29T13:20:21Z
dc.date.available2016-12-29T13:20:21Z
dc.date.issued2016-12-29
dc.identifier.citationXiong JY, Cai DJ, Chong QY, Lee SH, Chung T-S (2016) Osmotic Power Generation by Inner Selective Hollow Fiber Membranes: An investigation of thermodynamics, mass transfer, and module scale modelling. Journal of Membrane Science. Available: http://dx.doi.org/10.1016/j.memsci.2016.12.056.
dc.identifier.issn0376-7388
dc.identifier.doi10.1016/j.memsci.2016.12.056
dc.identifier.urihttp://hdl.handle.net/10754/622093
dc.description.abstractA comprehensive analysis of fluid motion, mass transport, thermodynamics and power generation during pressure retarded osmotic (PRO) processes was conducted. This work aims to (1) elucidate the fundamental relationship among various membrane properties and operation parameters and (2) analyse their individual and combined impacts on PRO module performance. A state-of-the-art inner-selective thin-film composite (TFC) hollow fiber membrane was employed in the modelling. The analyses of mass transfer and Gibbs free energy of mixing indicate that the asymmetric nature of hollow fibers results in more significant external concentration polarization (ECP) in the lumen side of the inner-selective hollow fiber membranes. In addition, a trade-off relationship exists between the power density (PD) and the specific energy (SE). The PD vs. SE trade-off upper bound may provide a useful guidance whether the flowrates of the feed and draw solutions should be further optimized in order to (1) minimize the boundary thickness and (2) maximize the osmotic power generation. Two new terms, mass transfer efficiency and power harvesting efficiency for osmotic power generation, have been proposed. This work may provide useful insights to design and operate PRO modules with enhanced performance so that the PRO process becomes more promising in real applications in the near future.
dc.description.sponsorshipThis work is granted by the Singapore National Research Foundation under its Environmental & Water Research Programme and administered by PUB, Singapore’s national water agency. It is funded under the projects entitled
dc.publisherElsevier BV
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0376738816323444
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, 29 December 2016. DOI: 10.1016/j.memsci.2016.12.056
dc.subjectPressure retarded osmosis (PRO)
dc.subjecthollow fiber membrane
dc.subjectGibbs free energy of mixing
dc.subjectmass transfer
dc.subjectmodule scale simulation
dc.titleOsmotic Power Generation by Inner Selective Hollow Fiber Membranes: An investigation of thermodynamics, mass transfer, and module scale modelling
dc.typeArticle
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.institutionDepartment of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117583, Singapore
kaust.personChung, Neal Tai-Shung
refterms.dateFOA2018-12-29T00:00:00Z
dc.date.published-online2016-12-29
dc.date.published-print2017-03


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