Describing ion transport and water splitting in an electrodialysis stack with bipolar membranes by a 2-D model: Experimental validation

Electrodialysis with bipolar membranes (EDBM) has drawn attention motivated by their application in gener- ating reagents from salts. Due to the water splitting (WS) occurring at the junction of the bipolar membranes (BPMs), where the anion and cation layers are in strict contact, H+ and OH- are rel...

Descripción completa

Detalles Bibliográficos
Autores: León Oviedo, Tamara Elizabeth|||0000-0001-8822-6538, Jofre Cruanyes, Lluís|||0000-0003-2437-259X, Cortina Pallás, José Luis|||0000-0002-3719-5118, Grau Barceló, Joan|||0000-0002-2556-9936, López Rodríguez, Julio|||0000-0001-6739-7960, Torres Cámara, Ricardo|||0000-0001-8030-5522
Tipo de recurso: artículo
Fecha de publicación:2022
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/375835
Acceso en línea:https://hdl.handle.net/2117/375835
https://dx.doi.org/10.1016/j.memsci.2022.120835
Access Level:acceso abierto
Palabra clave:Saline water conversion -- Electrodialysis process
Acid-base production
Ion-exchange membrane
Bipolar membranes
Water splitting
Second Wien effect
Aigua salada -- Dessalatge -- Electrodiàlisi
Àrees temàtiques de la UPC::Enginyeria química
id ES_3eed3937304dfd2c09a1eddc90d62a5a
oai_identifier_str oai:upcommons.upc.edu:2117/375835
network_acronym_str ES
network_name_str España
repository_id_str
spelling Describing ion transport and water splitting in an electrodialysis stack with bipolar membranes by a 2-D model: Experimental validationLeón Oviedo, Tamara Elizabeth|||0000-0001-8822-6538Jofre Cruanyes, Lluís|||0000-0003-2437-259XCortina Pallás, José Luis|||0000-0002-3719-5118Grau Barceló, Joan|||0000-0002-2556-9936López Rodríguez, Julio|||0000-0001-6739-7960Torres Cámara, Ricardo|||0000-0001-8030-5522Saline water conversion -- Electrodialysis processAcid-base productionIon-exchange membraneBipolar membranesWater splittingSecond Wien effectAigua salada -- Dessalatge -- ElectrodiàlisiÀrees temàtiques de la UPC::Enginyeria químicaElectrodialysis with bipolar membranes (EDBM) has drawn attention motivated by their application in gener- ating reagents from salts. Due to the water splitting (WS) occurring at the junction of the bipolar membranes (BPMs), where the anion and cation layers are in strict contact, H+ and OH- are released from the BPM producing acid and alkali on the respective compartment. Considering this application, the interest of this work is to provide further understanding of the mechanisms of WS and transport of species in EDBM. This work develops and utilizes, for the first time, an experimentally validated two-dimensional (2-D) computational model, in which the Navier-Stokes and Nernst-Planck equations are coupled with the description of WS given by the Second Wien effect. In addition, a 1-D geometry is also proposed to perform a comparison between electroneutrality and Poisson charge conservation. The model is computationally solved using COMSOL Multiphysics. According to simulations, electroneutrality is valid for 2-D geometries. Moreover, the semipermeable characteristics of the membranes are assessed by means of evidencing a polarization effect resulting in a double-electric layer. The model proposed predicts a significant proton leakage, and facilitates the study of WS within the BPMs.Peer Reviewed20222022-07-3020222022-11-08journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/375835https://dx.doi.org/10.1016/j.memsci.2022.120835reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3758352026-05-27T15:37:01Z
dc.title.none.fl_str_mv Describing ion transport and water splitting in an electrodialysis stack with bipolar membranes by a 2-D model: Experimental validation
title Describing ion transport and water splitting in an electrodialysis stack with bipolar membranes by a 2-D model: Experimental validation
spellingShingle Describing ion transport and water splitting in an electrodialysis stack with bipolar membranes by a 2-D model: Experimental validation
León Oviedo, Tamara Elizabeth|||0000-0001-8822-6538
Saline water conversion -- Electrodialysis process
Acid-base production
Ion-exchange membrane
Bipolar membranes
Water splitting
Second Wien effect
Aigua salada -- Dessalatge -- Electrodiàlisi
Àrees temàtiques de la UPC::Enginyeria química
title_short Describing ion transport and water splitting in an electrodialysis stack with bipolar membranes by a 2-D model: Experimental validation
title_full Describing ion transport and water splitting in an electrodialysis stack with bipolar membranes by a 2-D model: Experimental validation
title_fullStr Describing ion transport and water splitting in an electrodialysis stack with bipolar membranes by a 2-D model: Experimental validation
title_full_unstemmed Describing ion transport and water splitting in an electrodialysis stack with bipolar membranes by a 2-D model: Experimental validation
title_sort Describing ion transport and water splitting in an electrodialysis stack with bipolar membranes by a 2-D model: Experimental validation
dc.creator.none.fl_str_mv León Oviedo, Tamara Elizabeth|||0000-0001-8822-6538
Jofre Cruanyes, Lluís|||0000-0003-2437-259X
Cortina Pallás, José Luis|||0000-0002-3719-5118
Grau Barceló, Joan|||0000-0002-2556-9936
López Rodríguez, Julio|||0000-0001-6739-7960
Torres Cámara, Ricardo|||0000-0001-8030-5522
author León Oviedo, Tamara Elizabeth|||0000-0001-8822-6538
author_facet León Oviedo, Tamara Elizabeth|||0000-0001-8822-6538
Jofre Cruanyes, Lluís|||0000-0003-2437-259X
Cortina Pallás, José Luis|||0000-0002-3719-5118
Grau Barceló, Joan|||0000-0002-2556-9936
López Rodríguez, Julio|||0000-0001-6739-7960
Torres Cámara, Ricardo|||0000-0001-8030-5522
author_role author
author2 Jofre Cruanyes, Lluís|||0000-0003-2437-259X
Cortina Pallás, José Luis|||0000-0002-3719-5118
Grau Barceló, Joan|||0000-0002-2556-9936
López Rodríguez, Julio|||0000-0001-6739-7960
Torres Cámara, Ricardo|||0000-0001-8030-5522
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Saline water conversion -- Electrodialysis process
Acid-base production
Ion-exchange membrane
Bipolar membranes
Water splitting
Second Wien effect
Aigua salada -- Dessalatge -- Electrodiàlisi
Àrees temàtiques de la UPC::Enginyeria química
topic Saline water conversion -- Electrodialysis process
Acid-base production
Ion-exchange membrane
Bipolar membranes
Water splitting
Second Wien effect
Aigua salada -- Dessalatge -- Electrodiàlisi
Àrees temàtiques de la UPC::Enginyeria química
description Electrodialysis with bipolar membranes (EDBM) has drawn attention motivated by their application in gener- ating reagents from salts. Due to the water splitting (WS) occurring at the junction of the bipolar membranes (BPMs), where the anion and cation layers are in strict contact, H+ and OH- are released from the BPM producing acid and alkali on the respective compartment. Considering this application, the interest of this work is to provide further understanding of the mechanisms of WS and transport of species in EDBM. This work develops and utilizes, for the first time, an experimentally validated two-dimensional (2-D) computational model, in which the Navier-Stokes and Nernst-Planck equations are coupled with the description of WS given by the Second Wien effect. In addition, a 1-D geometry is also proposed to perform a comparison between electroneutrality and Poisson charge conservation. The model is computationally solved using COMSOL Multiphysics. According to simulations, electroneutrality is valid for 2-D geometries. Moreover, the semipermeable characteristics of the membranes are assessed by means of evidencing a polarization effect resulting in a double-electric layer. The model proposed predicts a significant proton leakage, and facilitates the study of WS within the BPMs.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022-07-30
2022
2022-11-08
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/375835
https://dx.doi.org/10.1016/j.memsci.2022.120835
url https://hdl.handle.net/2117/375835
https://dx.doi.org/10.1016/j.memsci.2022.120835
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
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
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
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869406592095485952
score 15,300724

Similares en LA Referencia