Photocatalytic degradation of Dichloroacetic acid: a kinetic study with a mechanistically based reaction model

In the present work, a study of the reaction kinetics of the photocatalytic degradation of dichloroacetic acid (DCA) employing UV radiation and titanium dioxide suspensions is reported. This study involved the development of a kinetic model from a proposed complete reaction sequence and estimation o...

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Autores: Ballari, Maria de Los Milagros, Alfano, Orlando Mario, Cassano, Alberto Enrique
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2009
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/24449
Acceso en línea:http://hdl.handle.net/11336/24449
Access Level:acceso abierto
Palabra clave:Dichloroacetic Acid
Uv Radiation
Titanium Dioxide
Slurry Reactors
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
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spelling Photocatalytic degradation of Dichloroacetic acid: a kinetic study with a mechanistically based reaction modelBallari, Maria de Los MilagrosAlfano, Orlando MarioCassano, Alberto EnriqueDichloroacetic AcidUv RadiationTitanium DioxideSlurry Reactorshttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2In the present work, a study of the reaction kinetics of the photocatalytic degradation of dichloroacetic acid (DCA) employing UV radiation and titanium dioxide suspensions is reported. This study involved the development of a kinetic model from a proposed complete reaction sequence and estimation of the kinetic parameters from experimental data. The experimental data were obtained using a perfect mixed photoreactor, because the operating conditions were chosen in compliance with restrictive conditions established in a previous work in which the possibility of mass-transfer limitations in slurry reactors was investigated. The significant variables in this study were (1) the initial DCA concentration, (2) the catalyst loading, and (3) the light intensity. Simulation results from the complete reactor mass balance, including radiation transport in the bulk and resistances inside the catalytic particle agglomeration, are in good agreement with  experiments, which provides confidence in the estimation of the kinetic parameters within the range of the explored variables.Fil: Ballari, Maria de Los Milagros. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; ArgentinaFil: Alfano, Orlando Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; ArgentinaFil: Cassano, Alberto Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; ArgentinaAmerican Chemical Society2009-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/24449Ballari, Maria de Los Milagros; Alfano, Orlando Mario; Cassano, Alberto Enrique; Photocatalytic degradation of Dichloroacetic acid: a kinetic study with a mechanistically based reaction model; American Chemical Society; Industrial & Engineering Chemical Research; 48; 4; 1-2009; 1847-18580888-5885CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1021/ie801194finfo:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/ie801194finfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T13:56:07Zoai:ri.conicet.gov.ar:11336/24449instacron: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:34982024-05-08 13:56:07.777CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Photocatalytic degradation of Dichloroacetic acid: a kinetic study with a mechanistically based reaction model
title Photocatalytic degradation of Dichloroacetic acid: a kinetic study with a mechanistically based reaction model
spellingShingle Photocatalytic degradation of Dichloroacetic acid: a kinetic study with a mechanistically based reaction model
Ballari, Maria de Los Milagros
Dichloroacetic Acid
Uv Radiation
Titanium Dioxide
Slurry Reactors
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
title_short Photocatalytic degradation of Dichloroacetic acid: a kinetic study with a mechanistically based reaction model
title_full Photocatalytic degradation of Dichloroacetic acid: a kinetic study with a mechanistically based reaction model
title_fullStr Photocatalytic degradation of Dichloroacetic acid: a kinetic study with a mechanistically based reaction model
title_full_unstemmed Photocatalytic degradation of Dichloroacetic acid: a kinetic study with a mechanistically based reaction model
title_sort Photocatalytic degradation of Dichloroacetic acid: a kinetic study with a mechanistically based reaction model
dc.creator.none.fl_str_mv Ballari, Maria de Los Milagros
Alfano, Orlando Mario
Cassano, Alberto Enrique
author Ballari, Maria de Los Milagros
author_facet Ballari, Maria de Los Milagros
Alfano, Orlando Mario
Cassano, Alberto Enrique
author_role author
author2 Alfano, Orlando Mario
Cassano, Alberto Enrique
author2_role author
author
dc.subject.none.fl_str_mv Dichloroacetic Acid
Uv Radiation
Titanium Dioxide
Slurry Reactors
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
topic Dichloroacetic Acid
Uv Radiation
Titanium Dioxide
Slurry Reactors
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
description In the present work, a study of the reaction kinetics of the photocatalytic degradation of dichloroacetic acid (DCA) employing UV radiation and titanium dioxide suspensions is reported. This study involved the development of a kinetic model from a proposed complete reaction sequence and estimation of the kinetic parameters from experimental data. The experimental data were obtained using a perfect mixed photoreactor, because the operating conditions were chosen in compliance with restrictive conditions established in a previous work in which the possibility of mass-transfer limitations in slurry reactors was investigated. The significant variables in this study were (1) the initial DCA concentration, (2) the catalyst loading, and (3) the light intensity. Simulation results from the complete reactor mass balance, including radiation transport in the bulk and resistances inside the catalytic particle agglomeration, are in good agreement with  experiments, which provides confidence in the estimation of the kinetic parameters within the range of the explored variables.
publishDate 2009
dc.date.none.fl_str_mv 2009-01
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/11336/24449
Ballari, Maria de Los Milagros; Alfano, Orlando Mario; Cassano, Alberto Enrique; Photocatalytic degradation of Dichloroacetic acid: a kinetic study with a mechanistically based reaction model; American Chemical Society; Industrial & Engineering Chemical Research; 48; 4; 1-2009; 1847-1858
0888-5885
CONICET Digital
CONICET
url http://hdl.handle.net/11336/24449
identifier_str_mv Ballari, Maria de Los Milagros; Alfano, Orlando Mario; Cassano, Alberto Enrique; Photocatalytic degradation of Dichloroacetic acid: a kinetic study with a mechanistically based reaction model; American Chemical Society; Industrial & Engineering Chemical Research; 48; 4; 1-2009; 1847-1858
0888-5885
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1021/ie801194f
info:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/ie801194f
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
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
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
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score 15,812455

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