Effect of operating parameters and membrane characteristics on air gap membrane distillation performance for the treatment of highly saline water

Handle URI:
http://hdl.handle.net/10754/604981
Title:
Effect of operating parameters and membrane characteristics on air gap membrane distillation performance for the treatment of highly saline water
Authors:
Xu, Jingli ( 0000-0002-4333-9544 ) ; Singh, Yogesh B.; Amy, Gary L.; Ghaffour, Noreddine ( 0000-0003-2095-4736 )
Abstract:
In this study, ten different commercially available PTFE, PP and PVDF membranes were tested in desalination of highly saline water by air gap membrane distillation (AGMD). Process performance was investigated under different operating parameters, such as feed temperatures, feed flow velocities and salt concentrations reaching 120 g/L, and different membrane characteristics, such as membrane material, thickness, pore size and support layer, using a locally designed and fabricatd AGMD module and spacer. Results showed that increasing feed temperature increases permeate flux regardless of the feed concentration. However, feed flow velocity does not significantly affect the flux, especially at low feed temperatures. The PP membrane showed a better performance than the PVDF and PTFE membranes. Permeate flux decreases with the increase of salt concentration of feed solution, especially at higher concentrations above 90 g/L. The existence of membrane support layer led to a slight decrease of permeate flux. Membranes with pore sizes of 0.2 and 0.45 μm gave the best performance. Smaller pore size led to lower flux and larger pore size led to pore wetting due to lower LEP values. The effect of concentration polarization and temperature polarization has also been studied and compared.
KAUST Department:
Water Desalination & Reuse Research Cntr; Biological and Environmental Sciences and Engineering (BESE) Division
Citation:
Effect of operating parameters and membrane characteristics on air gap membrane distillation performance for the treatment of highly saline water 2016 Journal of Membrane Science
Publisher:
Elsevier BV
Journal:
Journal of Membrane Science
Issue Date:
7-Apr-2016
DOI:
10.1016/j.memsci.2016.04.010
Type:
Article
ISSN:
03767388
Sponsors:
The research reported in this paper was supported by King Abdullah University of Science and Technology (KAUST), Saudi Arabia. The help, assistance and support of the Water Desalination and Reuse Center (WDRC) staff is greatly appreciated. The authors would also like to thank Saudi Aramco for financial support.
Additional Links:
http://linkinghub.elsevier.com/retrieve/pii/S0376738816302216
Appears in Collections:
Articles; Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorXu, Jinglien
dc.contributor.authorSingh, Yogesh B.en
dc.contributor.authorAmy, Gary L.en
dc.contributor.authorGhaffour, Noreddineen
dc.date.accessioned2016-04-10T13:47:18Zen
dc.date.available2016-04-10T13:47:18Zen
dc.date.issued2016-04-07en
dc.identifier.citationEffect of operating parameters and membrane characteristics on air gap membrane distillation performance for the treatment of highly saline water 2016 Journal of Membrane Scienceen
dc.identifier.issn03767388en
dc.identifier.doi10.1016/j.memsci.2016.04.010en
dc.identifier.urihttp://hdl.handle.net/10754/604981en
dc.description.abstractIn this study, ten different commercially available PTFE, PP and PVDF membranes were tested in desalination of highly saline water by air gap membrane distillation (AGMD). Process performance was investigated under different operating parameters, such as feed temperatures, feed flow velocities and salt concentrations reaching 120 g/L, and different membrane characteristics, such as membrane material, thickness, pore size and support layer, using a locally designed and fabricatd AGMD module and spacer. Results showed that increasing feed temperature increases permeate flux regardless of the feed concentration. However, feed flow velocity does not significantly affect the flux, especially at low feed temperatures. The PP membrane showed a better performance than the PVDF and PTFE membranes. Permeate flux decreases with the increase of salt concentration of feed solution, especially at higher concentrations above 90 g/L. The existence of membrane support layer led to a slight decrease of permeate flux. Membranes with pore sizes of 0.2 and 0.45 μm gave the best performance. Smaller pore size led to lower flux and larger pore size led to pore wetting due to lower LEP values. The effect of concentration polarization and temperature polarization has also been studied and compared.en
dc.description.sponsorshipThe research reported in this paper was supported by King Abdullah University of Science and Technology (KAUST), Saudi Arabia. The help, assistance and support of the Water Desalination and Reuse Center (WDRC) staff is greatly appreciated. The authors would also like to thank Saudi Aramco for financial support.en
dc.language.isoenen
dc.publisherElsevier BVen
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0376738816302216en
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, 7 April 2016. DOI: 10.1016/j.memsci.2016.04.010en
dc.subjectMD membranes performanceen
dc.subjectAir gap membrane distillation (AGMD)en
dc.subjectHighly saline water desalinationen
dc.subjectConcentration polarization coefficienten
dc.subjectTemperature polarizationen
dc.titleEffect of operating parameters and membrane characteristics on air gap membrane distillation performance for the treatment of highly saline wateren
dc.typeArticleen
dc.contributor.departmentWater Desalination & Reuse Research Cntren
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.identifier.journalJournal of Membrane Scienceen
dc.eprint.versionPost-printen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorXu, Jinglien
kaust.authorSingh, Yogesh B.en
kaust.authorAmy, Gary L.en
kaust.authorGhaffour, Noreddineen
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