Osmotic Power Generation by Inner Selective Hollow Fiber Membranes: An investigation of thermodynamics, mass transfer, and module scale modelling

Handle URI:
http://hdl.handle.net/10754/622093
Title:
Osmotic Power Generation by Inner Selective Hollow Fiber Membranes: An investigation of thermodynamics, mass transfer, and module scale modelling
Authors:
Xiong, Jun Ying; Cai, Dong Jun; Chong, Qing Yu; Lee, Swin Hui; Chung, Neal Tai-Shung ( 0000-0003-3704-8609 )
Abstract:
A 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.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC)
Citation:
Xiong 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.
Publisher:
Elsevier BV
Journal:
Journal of Membrane Science
Issue Date:
29-Dec-2016
DOI:
10.1016/j.memsci.2016.12.056
Type:
Article
ISSN:
0376-7388
Sponsors:
This 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
Additional Links:
http://www.sciencedirect.com/science/article/pii/S0376738816323444
Appears in Collections:
Articles; Water Desalination and Reuse Research Center (WDRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorXiong, Jun Yingen
dc.contributor.authorCai, Dong Junen
dc.contributor.authorChong, Qing Yuen
dc.contributor.authorLee, Swin Huien
dc.contributor.authorChung, Neal Tai-Shungen
dc.date.accessioned2016-12-29T13:20:21Z-
dc.date.available2016-12-29T13:20:21Z-
dc.date.issued2016-12-29en
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.en
dc.identifier.issn0376-7388en
dc.identifier.doi10.1016/j.memsci.2016.12.056en
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.en
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 entitleden
dc.publisherElsevier BVen
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0376738816323444en
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.2016.12.056en
dc.subjectPressure retarded osmosis (PRO)en
dc.subjecthollow fiber membraneen
dc.subjectGibbs free energy of mixingen
dc.subjectmass transferen
dc.subjectmodule scale simulationen
dc.titleOsmotic Power Generation by Inner Selective Hollow Fiber Membranes: An investigation of thermodynamics, mass transfer, and module scale modellingen
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.identifier.journalJournal of Membrane Scienceen
dc.eprint.versionPost-printen
dc.contributor.institutionDepartment of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singaporeen
dc.contributor.institutionDepartment of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117583, Singaporeen
kaust.authorChung, Neal Tai-Shungen
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