Desalination by direct contact membrane distillation using mixed matrix electrospun nanofibrous membranes with carbon-based nanofillers: A strategic improvement

Robust hydrophobic and superhydrophobic mixed matrix electrospun nanofibrous membranes (MM-ENMs) have been prepared from low- and high- molecular weight polyvinylidene fluoride with either multi-walled carbon nanotubes or graphene oxide nanofillers (0.05-0.5 wt%). The polymer solutions' propert...

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Authors: Essalhi, Mohamed, Khayet Souhaimi, Mohamed, Tesfalidet, Solomon, Alsultan, Mohammed, Tavajohi, Naser
Format: article
Publication Date:2021
Country:España
Institution:Universidad Complutense de Madrid (UCM)
Repository:Docta Complutense
Language:English
OAI Identifier:oai:docta.ucm.es:20.500.14352/4731
Online Access:https://hdl.handle.net/20.500.14352/4731
Access Level:Open access
Keyword:536
Hydrophobic/hydrophilic composite membranes
Air-gap
Performance
Layer
Nanotubes
Fabrication
Transport
Fluoride)
Impact
Termodinámica
2213 Termodinámica
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oai_identifier_str oai:docta.ucm.es:20.500.14352/4731
network_acronym_str ES
network_name_str España
repository_id_str
spelling Desalination by direct contact membrane distillation using mixed matrix electrospun nanofibrous membranes with carbon-based nanofillers: A strategic improvementEssalhi, MohamedKhayet Souhaimi, MohamedTesfalidet, SolomonAlsultan, MohammedTavajohi, Naser536Hydrophobic/hydrophilic composite membranesAir-gapPerformanceLayerNanotubesFabricationTransportFluoride)ImpactTermodinámica2213 TermodinámicaRobust hydrophobic and superhydrophobic mixed matrix electrospun nanofibrous membranes (MM-ENMs) have been prepared from low- and high- molecular weight polyvinylidene fluoride with either multi-walled carbon nanotubes or graphene oxide nanofillers (0.05-0.5 wt%). The polymer solutions' properties, including their electrical conductivity, viscosity, and surface tension, were determined and used to guide the design of single-, dual-, and triple-layered MM-ENMs combining layers with different hydrophobic character. All MM-ENMs were subsequently prepared and characterized in terms of their morphology, hydrophobicity, mechanical properties, and direct contact membrane distillation (DCMD) performance. A thinner hydrophobic layer with a thicker hydrophilic support layer in dual-layered MM-ENMs reduced water vapor transport resistance and improved DCMD performance relative to single-layer MM-ENMs. Conversely, placing an intermediate hydrophilic layer between two hydrophobic layers in triple-layered MM-ENMs promoted water condensation (water pocket formation) and thus reduced DCMD performance. Over 10 h DCMD, the best-performing dual-layered MM-ENM allowed ultra-high permeate fluxes of up to 74.7 kg/m2 h while maintaining a stable permeate electrical conductivity of around 7.63 mu S/cm and a salt (NaCl) rejection factor of up to 99.995% when operated with a feed temperature of 80 degrees C, a permeate temperature of 20 degrees C, and a feed solution containing NaCl at a concentration of 30 g/L.Elsevier B. V.Universidad Complutense de Madrid20212021-12-1520212021-12-15journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/4731reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución-NoComercial-SinDerivadas 3.0 Españahttps://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/47312026-06-02T12:44:21Z
dc.title.none.fl_str_mv Desalination by direct contact membrane distillation using mixed matrix electrospun nanofibrous membranes with carbon-based nanofillers: A strategic improvement
title Desalination by direct contact membrane distillation using mixed matrix electrospun nanofibrous membranes with carbon-based nanofillers: A strategic improvement
spellingShingle Desalination by direct contact membrane distillation using mixed matrix electrospun nanofibrous membranes with carbon-based nanofillers: A strategic improvement
Essalhi, Mohamed
536
Hydrophobic/hydrophilic composite membranes
Air-gap
Performance
Layer
Nanotubes
Fabrication
Transport
Fluoride)
Impact
Termodinámica
2213 Termodinámica
title_short Desalination by direct contact membrane distillation using mixed matrix electrospun nanofibrous membranes with carbon-based nanofillers: A strategic improvement
title_full Desalination by direct contact membrane distillation using mixed matrix electrospun nanofibrous membranes with carbon-based nanofillers: A strategic improvement
title_fullStr Desalination by direct contact membrane distillation using mixed matrix electrospun nanofibrous membranes with carbon-based nanofillers: A strategic improvement
title_full_unstemmed Desalination by direct contact membrane distillation using mixed matrix electrospun nanofibrous membranes with carbon-based nanofillers: A strategic improvement
title_sort Desalination by direct contact membrane distillation using mixed matrix electrospun nanofibrous membranes with carbon-based nanofillers: A strategic improvement
dc.creator.none.fl_str_mv Essalhi, Mohamed
Khayet Souhaimi, Mohamed
Tesfalidet, Solomon
Alsultan, Mohammed
Tavajohi, Naser
author Essalhi, Mohamed
author_facet Essalhi, Mohamed
Khayet Souhaimi, Mohamed
Tesfalidet, Solomon
Alsultan, Mohammed
Tavajohi, Naser
author_role author
author2 Khayet Souhaimi, Mohamed
Tesfalidet, Solomon
Alsultan, Mohammed
Tavajohi, Naser
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 536
Hydrophobic/hydrophilic composite membranes
Air-gap
Performance
Layer
Nanotubes
Fabrication
Transport
Fluoride)
Impact
Termodinámica
2213 Termodinámica
topic 536
Hydrophobic/hydrophilic composite membranes
Air-gap
Performance
Layer
Nanotubes
Fabrication
Transport
Fluoride)
Impact
Termodinámica
2213 Termodinámica
description Robust hydrophobic and superhydrophobic mixed matrix electrospun nanofibrous membranes (MM-ENMs) have been prepared from low- and high- molecular weight polyvinylidene fluoride with either multi-walled carbon nanotubes or graphene oxide nanofillers (0.05-0.5 wt%). The polymer solutions' properties, including their electrical conductivity, viscosity, and surface tension, were determined and used to guide the design of single-, dual-, and triple-layered MM-ENMs combining layers with different hydrophobic character. All MM-ENMs were subsequently prepared and characterized in terms of their morphology, hydrophobicity, mechanical properties, and direct contact membrane distillation (DCMD) performance. A thinner hydrophobic layer with a thicker hydrophilic support layer in dual-layered MM-ENMs reduced water vapor transport resistance and improved DCMD performance relative to single-layer MM-ENMs. Conversely, placing an intermediate hydrophilic layer between two hydrophobic layers in triple-layered MM-ENMs promoted water condensation (water pocket formation) and thus reduced DCMD performance. Over 10 h DCMD, the best-performing dual-layered MM-ENM allowed ultra-high permeate fluxes of up to 74.7 kg/m2 h while maintaining a stable permeate electrical conductivity of around 7.63 mu S/cm and a salt (NaCl) rejection factor of up to 99.995% when operated with a feed temperature of 80 degrees C, a permeate temperature of 20 degrees C, and a feed solution containing NaCl at a concentration of 30 g/L.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021-12-15
2021
2021-12-15
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/20.500.14352/4731
url https://hdl.handle.net/20.500.14352/4731
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
Atribución-NoComercial-SinDerivadas 3.0 España
https://creativecommons.org/licenses/by-nc-nd/3.0/es/
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
Atribución-NoComercial-SinDerivadas 3.0 España
https://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier B. V.
publisher.none.fl_str_mv Elsevier B. V.
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
_version_ 1869402944646938624
score 15,300719

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