Simulación molecular de una membrana de intercambio catiónico para un sistema de electrodiálisis inversa
Ilustraciones, tablas
- Autores:
-
Pérez Grisales, María Susana
- Tipo de recurso:
- Fecha de publicación:
- 2024
- Institución:
- Universidad Nacional de Colombia
- Repositorio:
- Universidad Nacional de Colombia
- Idioma:
- spa
- OAI Identifier:
- oai:repositorio.unal.edu.co:unal/86927
- Palabra clave:
- 540 - Química y ciencias afines::541 - Química física
Intercambio iónico
Dinámica molecular
Membrana de intercambio de iónico
Coeficiente de autodifusión
Interacciones moleculares
Dinámica molecular
DFT
Ion exchange membrane
Self-diffusion coefficient
Molecular interactions
Molecular dynamics
Ecuación de Schrödinger
Química computacional
- Rights
- openAccess
- License
- Atribución-NoComercial-SinDerivadas 4.0 Internacional
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UNACIONAL2 |
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Universidad Nacional de Colombia |
repository_id_str |
|
dc.title.spa.fl_str_mv |
Simulación molecular de una membrana de intercambio catiónico para un sistema de electrodiálisis inversa |
dc.title.translated.eng.fl_str_mv |
Molecular simulation of a cation exchange membrane for a reverse electrodialysis system |
title |
Simulación molecular de una membrana de intercambio catiónico para un sistema de electrodiálisis inversa |
spellingShingle |
Simulación molecular de una membrana de intercambio catiónico para un sistema de electrodiálisis inversa 540 - Química y ciencias afines::541 - Química física Intercambio iónico Dinámica molecular Membrana de intercambio de iónico Coeficiente de autodifusión Interacciones moleculares Dinámica molecular DFT Ion exchange membrane Self-diffusion coefficient Molecular interactions Molecular dynamics Ecuación de Schrödinger Química computacional |
title_short |
Simulación molecular de una membrana de intercambio catiónico para un sistema de electrodiálisis inversa |
title_full |
Simulación molecular de una membrana de intercambio catiónico para un sistema de electrodiálisis inversa |
title_fullStr |
Simulación molecular de una membrana de intercambio catiónico para un sistema de electrodiálisis inversa |
title_full_unstemmed |
Simulación molecular de una membrana de intercambio catiónico para un sistema de electrodiálisis inversa |
title_sort |
Simulación molecular de una membrana de intercambio catiónico para un sistema de electrodiálisis inversa |
dc.creator.fl_str_mv |
Pérez Grisales, María Susana |
dc.contributor.advisor.none.fl_str_mv |
Castañeda Ramírez, Sergio |
dc.contributor.author.none.fl_str_mv |
Pérez Grisales, María Susana |
dc.contributor.educationalvalidator.none.fl_str_mv |
Sánchez Sáenz Carlos Ignacio Moncayo Riascos Iván Darío |
dc.contributor.researchgroup.spa.fl_str_mv |
Grupo de Ingenieria Electroquímica Griequi |
dc.contributor.orcid.spa.fl_str_mv |
Pérez Grisales, Susana [0000000229059968] |
dc.subject.ddc.spa.fl_str_mv |
540 - Química y ciencias afines::541 - Química física |
topic |
540 - Química y ciencias afines::541 - Química física Intercambio iónico Dinámica molecular Membrana de intercambio de iónico Coeficiente de autodifusión Interacciones moleculares Dinámica molecular DFT Ion exchange membrane Self-diffusion coefficient Molecular interactions Molecular dynamics Ecuación de Schrödinger Química computacional |
dc.subject.lemb.none.fl_str_mv |
Intercambio iónico Dinámica molecular |
dc.subject.proposal.spa.fl_str_mv |
Membrana de intercambio de iónico Coeficiente de autodifusión Interacciones moleculares Dinámica molecular |
dc.subject.proposal.eng.fl_str_mv |
DFT Ion exchange membrane Self-diffusion coefficient Molecular interactions Molecular dynamics |
dc.subject.wikidata.none.fl_str_mv |
Ecuación de Schrödinger Química computacional |
description |
Ilustraciones, tablas |
publishDate |
2024 |
dc.date.accessioned.none.fl_str_mv |
2024-10-09T21:36:57Z |
dc.date.available.none.fl_str_mv |
2024-10-09T21:36:57Z |
dc.date.issued.none.fl_str_mv |
2024-10-07 |
dc.type.spa.fl_str_mv |
Trabajo de grado - Maestría |
dc.type.driver.spa.fl_str_mv |
info:eu-repo/semantics/masterThesis |
dc.type.version.spa.fl_str_mv |
info:eu-repo/semantics/acceptedVersion |
dc.type.content.spa.fl_str_mv |
Text |
dc.type.redcol.spa.fl_str_mv |
http://purl.org/redcol/resource_type/TM |
status_str |
acceptedVersion |
dc.identifier.uri.none.fl_str_mv |
https://repositorio.unal.edu.co/handle/unal/86927 |
dc.identifier.instname.spa.fl_str_mv |
Universidad Nacional de Colombia |
dc.identifier.reponame.spa.fl_str_mv |
Repositorio Institucional Universidad Nacional de Colombia |
dc.identifier.repourl.spa.fl_str_mv |
https://repositorio.unal.edu.co/ |
url |
https://repositorio.unal.edu.co/handle/unal/86927 https://repositorio.unal.edu.co/ |
identifier_str_mv |
Universidad Nacional de Colombia Repositorio Institucional Universidad Nacional de Colombia |
dc.language.iso.spa.fl_str_mv |
spa |
language |
spa |
dc.relation.references.spa.fl_str_mv |
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Atribución-NoComercial-SinDerivadas 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Castañeda Ramírez, Sergio359113f0f4cd23658b9bc9182d28bf0aPérez Grisales, María Susana2e6697ba37387c84f84668c9ec7dd45eSánchez Sáenz Carlos IgnacioMoncayo Riascos Iván DaríoGrupo de Ingenieria Electroquímica GriequiPérez Grisales, Susana [0000000229059968]2024-10-09T21:36:57Z2024-10-09T21:36:57Z2024-10-07https://repositorio.unal.edu.co/handle/unal/86927Universidad Nacional de ColombiaRepositorio Institucional Universidad Nacional de Colombiahttps://repositorio.unal.edu.co/Ilustraciones, tablasLas membranas de intercambio iónico desempeñan un papel fundamental en diversas tecnologías de separación y generación de energía. En particular, su aplicación en dispositivos de electrodiálisis inversa es clave, ya que la eficiencia de estos dispositivos depende del transporte selectivo de iones a través de las membranas y es sensible a la presencia de iones multivalentes cuando se operan con aguas naturales. Estos últimos reducen significativamente la densidad de potencia (hasta la mitad) que se puede obtener y disminuyen la eficiencia del equipo. Una mayor comprensión de los fenómenos relacionados con el transporte de los iones contribuye al diseño y mejora de membranas de intercambio iónico que estén adaptadas a las necesidades de la tecnología. Típicamente, los efectos de los iones multivalentes se han evaluado experimentalmente, sin embargo, es importante realizar estudios que brinden una comprensión más detallada de los fenómenos involucrados. Para esto se usaron técnicas de simulación molecular, que permitieron estudiar la autodifusión de los iones sodio, magnesio y cloro en membranas del polímero poliéter éter cetona sulfonado (SPEEK). Este enfoque fue útil para determinar las interacciones específicas entre el grupo cargado fijo de la membrana y los iones, y para obtener información sobre el transporte de los iones monovalentes y el ion divalente, en relación con la estructura del polímero. Asimismo, se observó la transición de difusión normal a anómala cuando se disminuye el contenido de agua en la membrana, teniendo en cuenta diferentes grados de hidratación experimentalmente observados para esta membrana. También, en este trabajo se encontró que los iones divalentes se caracterizan por una difusión anómala y coeficientes de autodifusión hasta diez veces menores que los coeficientes de autodifusión observados para el sodio y los iones cloro. Finalmente, dado que los iones divalentes se unen con mayor fuerza a los grupos funcionales de la membrana, la presencia de este ion da lugar a una disminución de las distancias probables entre los grupos funcionales de la membrana y una mayor tortuosidad, lo que puede limitar la movilidad de los iones divalentes y afectar propiedades críticas como la conductividad eléctrica y la permselectividad de la membrana de intercambio iónico.Ionic exchange membranes are fundamental in various separation and energy generation technologies. Their application in reverse electrodialysis devices is crucial, as their efficiency relies on the selective transport of ions across the membranes. They are also sensitive to the presence of multivalent ions when operating in natural waters. The latter significantly reduces the obtainable power density (by up to half) and decreases the device’s efficiency. A deeper understanding of the phenomena related to ion transport contributes to the design and improvement of ion exchange membranes tailored according to the requirements of the technology. Typically, the effects of multivalent ions have been experimentally evaluated; however, it is important to conduct studies that offer a more detailed understanding of the phenomena involved. Molecular simulation techniques were used for this purpose, allowing the study of self-diffusion of sodium, magnesium, and chloride ions in membranes of the polymer sulfonated poly (ether ether ketone) (SPEEK). This approach was useful in determining the specific interactions between the fixed-charged group of the membrane and the ions and in obtaining information on the transport of monovalent ions and divalent ions concerning the polymer structure. The results showed the transition from normal to anomalous diffusion as the membrane water content decreased for experimentally reported levels of membrane hydration. Moreover, this work found that divalent ions exhibit anomalous diffusion and have self-diffusion coefficients up to ten times lower than those of sodium and chloride ions. Finally, since divalent ions bind stronger to membrane functional groups, the presence of this ion results in decreased probable distances between membrane functional groups and increased tortuosity, which may limit the mobility of divalent ions and affect critical properties such as electrical conductivity and permselectivity of the ion exchange membrane.Contiene imágenes, ilustraciones y tablas.MaestríaMagíster en Ingeniería - Ingeniería QuímicaQuímica ComputacionalÁrea Curricular en Ciencias Naturales1 recursos en línea (163 páginas)application/pdfspaUniversidad Nacional de ColombiaMedellín - Minas - Maestría en Ingeniería - Ingeniería QuímicaFacultad de MinasMedellínUniversidad Nacional de Colombia - Sede Medellín540 - Química y ciencias afines::541 - Química físicaIntercambio iónicoDinámica molecularMembrana de intercambio de iónicoCoeficiente de autodifusiónInteracciones molecularesDinámica molecularDFTIon exchange membraneSelf-diffusion coefficientMolecular interactionsMolecular dynamicsEcuación de SchrödingerQuímica computacionalSimulación molecular de una membrana de intercambio catiónico para un sistema de electrodiálisis inversaMolecular simulation of a cation exchange membrane for a reverse electrodialysis systemTrabajo de grado - Maestríainfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/acceptedVersionTexthttp://purl.org/redcol/resource_type/TME. 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Tanaka, “Measurements of self-diffusion coefficients of water in pure water and in aqueous electrolyte solutions,” Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, vol. 71, pp. 1127–1131, 1975.AdministradoresLICENSElicense.txtlicense.txttext/plain; charset=utf-85879https://repositorio.unal.edu.co/bitstream/unal/86927/1/license.txteb34b1cf90b7e1103fc9dfd26be24b4aMD51ORIGINAL1017233187.2024.pdf1017233187.2024.pdfTesis de Maestría en Ciencias - Químicaapplication/pdf9950228https://repositorio.unal.edu.co/bitstream/unal/86927/3/1017233187.2024.pdfaa9eceeb4c4d52a765ac50fac25020acMD53THUMBNAIL1017233187.2024.pdf.jpg1017233187.2024.pdf.jpgGenerated Thumbnailimage/jpeg4443https://repositorio.unal.edu.co/bitstream/unal/86927/4/1017233187.2024.pdf.jpgde6d6475b555f778fba418ca375de68cMD54unal/86927oai:repositorio.unal.edu.co:unal/869272024-10-09 23:52:00.676Repositorio Institucional Universidad Nacional de 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