Modeling of air-gap membrane distillation process: A theoretical and experimental study

Handle URI:
http://hdl.handle.net/10754/562988
Title:
Modeling of air-gap membrane distillation process: A theoretical and experimental study
Authors:
Alsaadi, Ahmad Salem ( 0000-0002-5334-8305 ) ; Ghaffour, Noreddine ( 0000-0003-2095-4736 ) ; Li, Junde; Gray, Stephen R.; Francis, Lijo; Maab, Husnul; Amy, Gary L.
Abstract:
A one dimensional (1-D) air gap membrane distillation (AGMD) model for flat sheet type modules has been developed. This model is based on mathematical equations that describe the heat and mass transfer mechanisms of a single-stage AGMD process. It can simulate AGMD modules in both co-current and counter-current flow regimes. The theoretical model was validated using AGMD experimental data obtained under different operating conditions and parameters. The predicted water vapor flux was compared to the flux measured at five different feed water temperatures, two different feed water salinities, three different air gap widths and two MD membranes with different average pore sizes. This comparison showed that the model flux predictions are strongly correlated with the experimental data, with model predictions being within +10% of the experimentally determined values. The model was then used to study and analyze the parameters that have significant effect on scaling-up the AGMD process such as the effect of increasing the membrane length, and feed and coolant flow rates. The model was also used to analyze the maximum thermal efficiency of the AGMD process by tracing changes in water production rate and the heat input to the process along the membrane length. This was used to understand the gain in both process production and thermal efficiency for different membrane surface areas and the resultant increases in process capital and water unit cost. © 2013 Elsevier B.V.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC); Environmental Science and Engineering Program; Water Desalination and Reuse Research Center; Water Desalination & Reuse Research Cntr; Biological and Environmental Sciences and Engineering (BESE) Division
Publisher:
Elsevier BV
Journal:
Journal of Membrane Science
Issue Date:
3-Jun-2013
DOI:
10.1016/j.memsci.2013.05.049
Type:
Article
ISSN:
03767388
Appears in Collections:
Articles; Environmental Science and Engineering Program; Water Desalination and Reuse Research Center (WDRC); Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorAlsaadi, Ahmad Salemen
dc.contributor.authorGhaffour, Noreddineen
dc.contributor.authorLi, Jundeen
dc.contributor.authorGray, Stephen R.en
dc.contributor.authorFrancis, Lijoen
dc.contributor.authorMaab, Husnulen
dc.contributor.authorAmy, Gary L.en
dc.date.accessioned2015-08-03T11:18:15Zen
dc.date.available2015-08-03T11:18:15Zen
dc.date.issued2013-06-03en
dc.identifier.issn03767388en
dc.identifier.doi10.1016/j.memsci.2013.05.049en
dc.identifier.urihttp://hdl.handle.net/10754/562988en
dc.description.abstractA one dimensional (1-D) air gap membrane distillation (AGMD) model for flat sheet type modules has been developed. This model is based on mathematical equations that describe the heat and mass transfer mechanisms of a single-stage AGMD process. It can simulate AGMD modules in both co-current and counter-current flow regimes. The theoretical model was validated using AGMD experimental data obtained under different operating conditions and parameters. The predicted water vapor flux was compared to the flux measured at five different feed water temperatures, two different feed water salinities, three different air gap widths and two MD membranes with different average pore sizes. This comparison showed that the model flux predictions are strongly correlated with the experimental data, with model predictions being within +10% of the experimentally determined values. The model was then used to study and analyze the parameters that have significant effect on scaling-up the AGMD process such as the effect of increasing the membrane length, and feed and coolant flow rates. The model was also used to analyze the maximum thermal efficiency of the AGMD process by tracing changes in water production rate and the heat input to the process along the membrane length. This was used to understand the gain in both process production and thermal efficiency for different membrane surface areas and the resultant increases in process capital and water unit cost. © 2013 Elsevier B.V.en
dc.publisherElsevier BVen
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, 3 June 2013. DOI: 10.1016/j.memsci.2013.05.049en
dc.subjectAir-gap membrane distillation (AGMD)en
dc.subjectCo-current and counter-current flow regimesen
dc.subjectModelingen
dc.subjectScale-upen
dc.subjectThermal efficiencyen
dc.titleModeling of air-gap membrane distillation process: A theoretical and experimental studyen
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.contributor.departmentEnvironmental Science and Engineering Programen
dc.contributor.departmentWater Desalination and Reuse Research Centeren
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.institutionSchool of Engineering and Science, Victoria University, P.O. Box 14428, Melbourne, VIC 8001, Australiaen
dc.contributor.institutionInstitute of Sustainability and Innovation, Victoria University, P.O. Box 14428, Melbourne, VIC 8001, Australiaen
kaust.authorAlsaadi, Ahmad Salemen
kaust.authorGhaffour, Noreddineen
kaust.authorFrancis, Lijoen
kaust.authorMaab, Husnulen
kaust.authorAmy, Gary L.en
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