Modelling mass transport through a porous partition: Effect of pore size distribution.

Direct contact membrane distillation process has been studied using microporous polytetrafluoroethylene and polyvinylidene fluoride membranes. The membranes were characterized in terms of their nonwettability, pore size distribution and porosity. The mean pore sizes and pore size distributions were...

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Detalles Bibliográficos
Autores: Khayet Souhaimi, Mohamed, Velázquez, Armando, Mengual, Juan I.
Tipo de recurso: artículo
Fecha de publicación:2004
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/51850
Acceso en línea:https://hdl.handle.net/20.500.14352/51850
Access Level:acceso abierto
Palabra clave:536
Thermodynamics
Mechanics.
Termodinámica
2213 Termodinámica
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spelling Modelling mass transport through a porous partition: Effect of pore size distribution.Khayet Souhaimi, MohamedVelázquez, ArmandoMengual, Juan I.536ThermodynamicsMechanics.Termodinámica2213 TermodinámicaDirect contact membrane distillation process has been studied using microporous polytetrafluoroethylene and polyvinylidene fluoride membranes. The membranes were characterized in terms of their nonwettability, pore size distribution and porosity. The mean pore sizes and pore size distributions were obtained by means of wet/ dry flow method. The mean pore size and the effective porosity of the membranes were also determined from the gas permeation test. A theoretical model that considers the pore size distribution together with the gas transport mechanisms through the membrane pores was developed for this process. The contribution of each mass transport mechanism was analyzed. It was found that both membranes have pore size distributions in the Knudsen region and in the transition between Knudsen and ordinary diffusion region. The transition region was the major contribution to mass transport. The predicted water vapor permeability of the membranes were compared with the experimental ones. The effect of considering pore size distribution instead of mean pore size to predict the water vapor permeability of the membranes was investigated.Walter de Gruyter & COUniversidad Complutense de Madrid20042004-01-0120042004-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/51850reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/518502026-06-02T12:44:21Z
dc.title.none.fl_str_mv Modelling mass transport through a porous partition: Effect of pore size distribution.
title Modelling mass transport through a porous partition: Effect of pore size distribution.
spellingShingle Modelling mass transport through a porous partition: Effect of pore size distribution.
Khayet Souhaimi, Mohamed
536
Thermodynamics
Mechanics.
Termodinámica
2213 Termodinámica
title_short Modelling mass transport through a porous partition: Effect of pore size distribution.
title_full Modelling mass transport through a porous partition: Effect of pore size distribution.
title_fullStr Modelling mass transport through a porous partition: Effect of pore size distribution.
title_full_unstemmed Modelling mass transport through a porous partition: Effect of pore size distribution.
title_sort Modelling mass transport through a porous partition: Effect of pore size distribution.
dc.creator.none.fl_str_mv Khayet Souhaimi, Mohamed
Velázquez, Armando
Mengual, Juan I.
author Khayet Souhaimi, Mohamed
author_facet Khayet Souhaimi, Mohamed
Velázquez, Armando
Mengual, Juan I.
author_role author
author2 Velázquez, Armando
Mengual, Juan I.
author2_role author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 536
Thermodynamics
Mechanics.
Termodinámica
2213 Termodinámica
topic 536
Thermodynamics
Mechanics.
Termodinámica
2213 Termodinámica
description Direct contact membrane distillation process has been studied using microporous polytetrafluoroethylene and polyvinylidene fluoride membranes. The membranes were characterized in terms of their nonwettability, pore size distribution and porosity. The mean pore sizes and pore size distributions were obtained by means of wet/ dry flow method. The mean pore size and the effective porosity of the membranes were also determined from the gas permeation test. A theoretical model that considers the pore size distribution together with the gas transport mechanisms through the membrane pores was developed for this process. The contribution of each mass transport mechanism was analyzed. It was found that both membranes have pore size distributions in the Knudsen region and in the transition between Knudsen and ordinary diffusion region. The transition region was the major contribution to mass transport. The predicted water vapor permeability of the membranes were compared with the experimental ones. The effect of considering pore size distribution instead of mean pore size to predict the water vapor permeability of the membranes was investigated.
publishDate 2004
dc.date.none.fl_str_mv 2004
2004-01-01
2004
2004-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/51850
url https://hdl.handle.net/20.500.14352/51850
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Walter de Gruyter & CO
publisher.none.fl_str_mv Walter de Gruyter & CO
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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