Water vapor permeation and dehumidification performance of poly(vinyl alcohol)/lithium chloride composite membranes

Handle URI:
http://hdl.handle.net/10754/581361
Title:
Water vapor permeation and dehumidification performance of poly(vinyl alcohol)/lithium chloride composite membranes
Authors:
Bui, Duc Thuan; Nida, Aqdas; Ng, Kim Choon; Chua, Kian Jon
Abstract:
Thin and robust composite membranes comprising stainless steel scaffold, fine and porous TiO2 and polyvinyl alcohol/lithium chloride were fabricated and studied for air dehumidification application. Higher hydrophilicity, sorption and permeation were observed for membranes with increased lithium chloride content up to 50%. The permeation and sorption properties of the membranes were investigated under different temperatures. The results provided a deeper insight into the membrane water vapor permeation process. It was specifically noted that lithium chloride significantly reduces water diffusion energy barrier, resulting in the change of permeation energy from positive to negative values. Higher water vapor permeance was observed for the membrane with higher LiCl content at lower temperature. The isothermal air dehumidification tests show that the membrane is suitable for dehumidifying air in high humid condition. Additionally, results also indicate a trade-off between the humidity ratio drop with the water vapor removal rate when varying air flowrate.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC)
Citation:
Water vapor permeation and dehumidification performance of poly(vinyl alcohol)/lithium chloride composite membranes 2016, 498:254 Journal of Membrane Science
Publisher:
Elsevier BV
Journal:
Journal of Membrane Science
Issue Date:
9-Oct-2015
DOI:
10.1016/j.memsci.2015.10.021
Type:
Article
ISSN:
03767388
Additional Links:
http://linkinghub.elsevier.com/retrieve/pii/S0376738815302519
Appears in Collections:
Articles; Water Desalination and Reuse Research Center (WDRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorBui, Duc Thuanen
dc.contributor.authorNida, Aqdasen
dc.contributor.authorNg, Kim Choonen
dc.contributor.authorChua, Kian Jonen
dc.date.accessioned2015-10-28T13:44:08Zen
dc.date.available2015-10-28T13:44:08Zen
dc.date.issued2015-10-09en
dc.identifier.citationWater vapor permeation and dehumidification performance of poly(vinyl alcohol)/lithium chloride composite membranes 2016, 498:254 Journal of Membrane Scienceen
dc.identifier.issn03767388en
dc.identifier.doi10.1016/j.memsci.2015.10.021en
dc.identifier.urihttp://hdl.handle.net/10754/581361en
dc.description.abstractThin and robust composite membranes comprising stainless steel scaffold, fine and porous TiO2 and polyvinyl alcohol/lithium chloride were fabricated and studied for air dehumidification application. Higher hydrophilicity, sorption and permeation were observed for membranes with increased lithium chloride content up to 50%. The permeation and sorption properties of the membranes were investigated under different temperatures. The results provided a deeper insight into the membrane water vapor permeation process. It was specifically noted that lithium chloride significantly reduces water diffusion energy barrier, resulting in the change of permeation energy from positive to negative values. Higher water vapor permeance was observed for the membrane with higher LiCl content at lower temperature. The isothermal air dehumidification tests show that the membrane is suitable for dehumidifying air in high humid condition. Additionally, results also indicate a trade-off between the humidity ratio drop with the water vapor removal rate when varying air flowrate.en
dc.language.isoenen
dc.publisherElsevier BVen
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0376738815302519en
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, 9 October 2015. DOI: 10.1016/j.memsci.2015.10.021en
dc.subjectAir dehumidificationen
dc.subjectWater vapor permeanceen
dc.subjectWater sorptionen
dc.subjectWater diffusionen
dc.subjectActivation energyen
dc.subjectVacuum membrane dehumidificationen
dc.titleWater vapor permeation and dehumidification performance of poly(vinyl alcohol)/lithium chloride composite membranesen
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.identifier.journalJournal of Membrane Scienceen
dc.eprint.versionPost-printen
dc.contributor.institutionNational University of Singapore, Department of Mechanical Engineering, 9 Engineering Drive 1, Singapore 117576, Singaporeen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorNg, Kim Choonen
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