Differential diffusion effects on buoyancy-driven instabilities of acid-base fronts: The case of a color indicator

Autores
Kuster, S.; Riolfo, L. A.; Zalts, Anita; El Hasi, C.; Almarcha, C.; Trevelyan, P.M.J.; De Wit, A.; D'onofrio, Alejandro Gustavo
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Buoyancy-driven hydrodynamic instabilities of acid-base fronts are studied both experimentally and theoretically in the case where an aqueous solution of a strong acid is put above a denser aqueous solution of a color indicator in the gravity field. The neutralization reaction between the acid and the color indicator as well as their differential diffusion modifies the initially stable density profile in the system and can trigger convective motions both above and below the initial contact line. The type of patterns observed as well as their wavelength and the speed of the reaction front are shown to depend on the value of the initial concentrations of the acid and of the color indicator and on their ratio. A reaction-diffusion model based on charge balances and ion pair mobility explains how the instability scenarios change when the concentration of the reactants are varied.
Fil: Kuster, S.. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física. Grupo de Medios Porosos; Argentina
Fil: Riolfo, L. A.. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física. Grupo de Medios Porosos; Argentina
Fil: Zalts, Anita. Universidad Nacional de General Sarmiento; Argentina
Fil: El Hasi, C.. Universidad Nacional de General Sarmiento; Argentina
Fil: Almarcha, C.. Université Libre de Bruxelles; Bélgica
Fil: Trevelyan, P.M.J.. Université Libre de Bruxelles; Bélgica
Fil: De Wit, A.. Université Libre de Bruxelles; Bélgica
Fil: D'onofrio, Alejandro Gustavo. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física. Grupo de Medios Porosos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Instabilities
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/192963
Acceder
id CONICETDig_3741cc4ae64959be814d6c0ec01d116c
oai_identifier_str oai:ri.conicet.gov.ar:11336/192963
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Differential diffusion effects on buoyancy-driven instabilities of acid-base fronts: The case of a color indicatorKuster, S.Riolfo, L. A.Zalts, AnitaEl Hasi, C.Almarcha, C.Trevelyan, P.M.J.De Wit, A.D'onofrio, Alejandro GustavoInstabilitieshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Buoyancy-driven hydrodynamic instabilities of acid-base fronts are studied both experimentally and theoretically in the case where an aqueous solution of a strong acid is put above a denser aqueous solution of a color indicator in the gravity field. The neutralization reaction between the acid and the color indicator as well as their differential diffusion modifies the initially stable density profile in the system and can trigger convective motions both above and below the initial contact line. The type of patterns observed as well as their wavelength and the speed of the reaction front are shown to depend on the value of the initial concentrations of the acid and of the color indicator and on their ratio. A reaction-diffusion model based on charge balances and ion pair mobility explains how the instability scenarios change when the concentration of the reactants are varied.Fil: Kuster, S.. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física. Grupo de Medios Porosos; ArgentinaFil: Riolfo, L. A.. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física. Grupo de Medios Porosos; ArgentinaFil: Zalts, Anita. Universidad Nacional de General Sarmiento; ArgentinaFil: El Hasi, C.. Universidad Nacional de General Sarmiento; ArgentinaFil: Almarcha, C.. Université Libre de Bruxelles; BélgicaFil: Trevelyan, P.M.J.. Université Libre de Bruxelles; BélgicaFil: De Wit, A.. Université Libre de Bruxelles; BélgicaFil: D'onofrio, Alejandro Gustavo. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física. Grupo de Medios Porosos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaRoyal Society of Chemistry2011-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/192963Kuster, S.; Riolfo, L. A.; Zalts, Anita; El Hasi, C.; Almarcha, C.; et al.; Differential diffusion effects on buoyancy-driven instabilities of acid-base fronts: The case of a color indicator; Royal Society of Chemistry; Physical Chemistry Chemical Physics; 13; 38; 8-2011; 17295-173031463-9076CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://pubs.rsc.org/en/content/articlelanding/2011/cp/c1cp21185dinfo:eu-repo/semantics/altIdentifier/doi/10.1039/C1CP21185Dinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:11:11Zoai:ri.conicet.gov.ar:11336/192963instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:11:12.157CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Differential diffusion effects on buoyancy-driven instabilities of acid-base fronts: The case of a color indicator
title Differential diffusion effects on buoyancy-driven instabilities of acid-base fronts: The case of a color indicator
spellingShingle Differential diffusion effects on buoyancy-driven instabilities of acid-base fronts: The case of a color indicator
Kuster, S.
Instabilities
title_short Differential diffusion effects on buoyancy-driven instabilities of acid-base fronts: The case of a color indicator
title_full Differential diffusion effects on buoyancy-driven instabilities of acid-base fronts: The case of a color indicator
title_fullStr Differential diffusion effects on buoyancy-driven instabilities of acid-base fronts: The case of a color indicator
title_full_unstemmed Differential diffusion effects on buoyancy-driven instabilities of acid-base fronts: The case of a color indicator
title_sort Differential diffusion effects on buoyancy-driven instabilities of acid-base fronts: The case of a color indicator
dc.creator.none.fl_str_mv Kuster, S.
Riolfo, L. A.
Zalts, Anita
El Hasi, C.
Almarcha, C.
Trevelyan, P.M.J.
De Wit, A.
D'onofrio, Alejandro Gustavo
author Kuster, S.
author_facet Kuster, S.
Riolfo, L. A.
Zalts, Anita
El Hasi, C.
Almarcha, C.
Trevelyan, P.M.J.
De Wit, A.
D'onofrio, Alejandro Gustavo
author_role author
author2 Riolfo, L. A.
Zalts, Anita
El Hasi, C.
Almarcha, C.
Trevelyan, P.M.J.
De Wit, A.
D'onofrio, Alejandro Gustavo
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Instabilities
topic Instabilities
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Buoyancy-driven hydrodynamic instabilities of acid-base fronts are studied both experimentally and theoretically in the case where an aqueous solution of a strong acid is put above a denser aqueous solution of a color indicator in the gravity field. The neutralization reaction between the acid and the color indicator as well as their differential diffusion modifies the initially stable density profile in the system and can trigger convective motions both above and below the initial contact line. The type of patterns observed as well as their wavelength and the speed of the reaction front are shown to depend on the value of the initial concentrations of the acid and of the color indicator and on their ratio. A reaction-diffusion model based on charge balances and ion pair mobility explains how the instability scenarios change when the concentration of the reactants are varied.
Fil: Kuster, S.. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física. Grupo de Medios Porosos; Argentina
Fil: Riolfo, L. A.. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física. Grupo de Medios Porosos; Argentina
Fil: Zalts, Anita. Universidad Nacional de General Sarmiento; Argentina
Fil: El Hasi, C.. Universidad Nacional de General Sarmiento; Argentina
Fil: Almarcha, C.. Université Libre de Bruxelles; Bélgica
Fil: Trevelyan, P.M.J.. Université Libre de Bruxelles; Bélgica
Fil: De Wit, A.. Université Libre de Bruxelles; Bélgica
Fil: D'onofrio, Alejandro Gustavo. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física. Grupo de Medios Porosos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description Buoyancy-driven hydrodynamic instabilities of acid-base fronts are studied both experimentally and theoretically in the case where an aqueous solution of a strong acid is put above a denser aqueous solution of a color indicator in the gravity field. The neutralization reaction between the acid and the color indicator as well as their differential diffusion modifies the initially stable density profile in the system and can trigger convective motions both above and below the initial contact line. The type of patterns observed as well as their wavelength and the speed of the reaction front are shown to depend on the value of the initial concentrations of the acid and of the color indicator and on their ratio. A reaction-diffusion model based on charge balances and ion pair mobility explains how the instability scenarios change when the concentration of the reactants are varied.
publishDate 2011
dc.date.none.fl_str_mv 2011-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/192963
Kuster, S.; Riolfo, L. A.; Zalts, Anita; El Hasi, C.; Almarcha, C.; et al.; Differential diffusion effects on buoyancy-driven instabilities of acid-base fronts: The case of a color indicator; Royal Society of Chemistry; Physical Chemistry Chemical Physics; 13; 38; 8-2011; 17295-17303
1463-9076
CONICET Digital
CONICET
url http://hdl.handle.net/11336/192963
identifier_str_mv Kuster, S.; Riolfo, L. A.; Zalts, Anita; El Hasi, C.; Almarcha, C.; et al.; Differential diffusion effects on buoyancy-driven instabilities of acid-base fronts: The case of a color indicator; Royal Society of Chemistry; Physical Chemistry Chemical Physics; 13; 38; 8-2011; 17295-17303
1463-9076
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://pubs.rsc.org/en/content/articlelanding/2011/cp/c1cp21185d
info:eu-repo/semantics/altIdentifier/doi/10.1039/C1CP21185D
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Royal Society of Chemistry
publisher.none.fl_str_mv Royal Society of Chemistry
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1842270149705465856
score 13.13397

Publicaciones similares