Optical Properties of Goethite Catalyst for Heterogeneous Photo-Fenton Reactions. Comparison with a Titanium Dioxide Catalyst

Autores
Ortiz de la Plata, Guadalupe Beatriz; Alfano, Orlando Mario; Cassano, Alberto Enrique
Año de publicación
2008
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Optical properties of solid catalysts needed for a rigorous modeling of heterogeneous photo-Fenton reaction kinetics and the ultimate reactor design have not been studied so far. Without these data, quantitative information concerning the influence of the radiation field in the process performance is almost impossible. These reactions are still under the first stages of their studies, and most of the effort has been aimed at elucidate yields, tentative mechanisms, the optimum operating pH and ways to reduce iron ions leaching to the aqueous solution. This work reports the values of above-mentioned parameters precisely calculated, resorting to specially designed spectrophotometer measurements coupled with the solution of the radiative transfer equation (RTE). Goethite, a natural occurring ferric oxide, was studied to obtain the values of the radiation linear volumetric absorption and scattering coefficients, as well as the phase function for scattering, some of them as a function of mass composition, and all of them as a function of the wavelength range between 310 and 500 nm. The results indicate that, in addition to its demonstrated ability to degrade effectively many contaminants, its optical properties exhibit very low absorption and scattering properties. This outcome improves its potentiality for applications in large-scale reactors, because the resulting useful optical path length will be significantly large. Specifically, these results are compared with a typical photocatalytic substance, such as titanium dioxide to remark the differences.
Fil: Ortiz de la Plata, Guadalupe Beatriz. 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; Argentina
Fil: 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; Argentina
Fil: 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; Argentina
Materia
Heterogeneous Photo-Fenton
Goethite
Optical Properties
Radiation Field
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:11336/24730
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Optical Properties of Goethite Catalyst for Heterogeneous Photo-Fenton Reactions. Comparison with a Titanium Dioxide CatalystOrtiz de la Plata, Guadalupe BeatrizAlfano, Orlando MarioCassano, Alberto EnriqueHeterogeneous Photo-FentonGoethiteOptical PropertiesRadiation Fieldhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Optical properties of solid catalysts needed for a rigorous modeling of heterogeneous photo-Fenton reaction kinetics and the ultimate reactor design have not been studied so far. Without these data, quantitative information concerning the influence of the radiation field in the process performance is almost impossible. These reactions are still under the first stages of their studies, and most of the effort has been aimed at elucidate yields, tentative mechanisms, the optimum operating pH and ways to reduce iron ions leaching to the aqueous solution. This work reports the values of above-mentioned parameters precisely calculated, resorting to specially designed spectrophotometer measurements coupled with the solution of the radiative transfer equation (RTE). Goethite, a natural occurring ferric oxide, was studied to obtain the values of the radiation linear volumetric absorption and scattering coefficients, as well as the phase function for scattering, some of them as a function of mass composition, and all of them as a function of the wavelength range between 310 and 500 nm. The results indicate that, in addition to its demonstrated ability to degrade effectively many contaminants, its optical properties exhibit very low absorption and scattering properties. This outcome improves its potentiality for applications in large-scale reactors, because the resulting useful optical path length will be significantly large. Specifically, these results are compared with a typical photocatalytic substance, such as titanium dioxide to remark the differences.Fil: Ortiz de la Plata, Guadalupe Beatriz. 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; ArgentinaElsevier Science Sa2008-03info: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/11336/24730Ortiz de la Plata, Guadalupe Beatriz; Alfano, Orlando Mario; Cassano, Alberto Enrique; Optical Properties of Goethite Catalyst for Heterogeneous Photo-Fenton Reactions. Comparison with a Titanium Dioxide Catalyst; Elsevier Science Sa; Chemical Engineering Journal; 137; 2; 3-2008; 396-4101385-8947CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.cej.2007.05.008info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1385894707003427info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:04:12Zoai:ri.conicet.gov.ar:11336/24730instacron: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 10:04:13.249CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Optical Properties of Goethite Catalyst for Heterogeneous Photo-Fenton Reactions. Comparison with a Titanium Dioxide Catalyst
title Optical Properties of Goethite Catalyst for Heterogeneous Photo-Fenton Reactions. Comparison with a Titanium Dioxide Catalyst
spellingShingle Optical Properties of Goethite Catalyst for Heterogeneous Photo-Fenton Reactions. Comparison with a Titanium Dioxide Catalyst
Ortiz de la Plata, Guadalupe Beatriz
Heterogeneous Photo-Fenton
Goethite
Optical Properties
Radiation Field
title_short Optical Properties of Goethite Catalyst for Heterogeneous Photo-Fenton Reactions. Comparison with a Titanium Dioxide Catalyst
title_full Optical Properties of Goethite Catalyst for Heterogeneous Photo-Fenton Reactions. Comparison with a Titanium Dioxide Catalyst
title_fullStr Optical Properties of Goethite Catalyst for Heterogeneous Photo-Fenton Reactions. Comparison with a Titanium Dioxide Catalyst
title_full_unstemmed Optical Properties of Goethite Catalyst for Heterogeneous Photo-Fenton Reactions. Comparison with a Titanium Dioxide Catalyst
title_sort Optical Properties of Goethite Catalyst for Heterogeneous Photo-Fenton Reactions. Comparison with a Titanium Dioxide Catalyst
dc.creator.none.fl_str_mv Ortiz de la Plata, Guadalupe Beatriz
Alfano, Orlando Mario
Cassano, Alberto Enrique
author Ortiz de la Plata, Guadalupe Beatriz
author_facet Ortiz de la Plata, Guadalupe Beatriz
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 Heterogeneous Photo-Fenton
Goethite
Optical Properties
Radiation Field
topic Heterogeneous Photo-Fenton
Goethite
Optical Properties
Radiation Field
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Optical properties of solid catalysts needed for a rigorous modeling of heterogeneous photo-Fenton reaction kinetics and the ultimate reactor design have not been studied so far. Without these data, quantitative information concerning the influence of the radiation field in the process performance is almost impossible. These reactions are still under the first stages of their studies, and most of the effort has been aimed at elucidate yields, tentative mechanisms, the optimum operating pH and ways to reduce iron ions leaching to the aqueous solution. This work reports the values of above-mentioned parameters precisely calculated, resorting to specially designed spectrophotometer measurements coupled with the solution of the radiative transfer equation (RTE). Goethite, a natural occurring ferric oxide, was studied to obtain the values of the radiation linear volumetric absorption and scattering coefficients, as well as the phase function for scattering, some of them as a function of mass composition, and all of them as a function of the wavelength range between 310 and 500 nm. The results indicate that, in addition to its demonstrated ability to degrade effectively many contaminants, its optical properties exhibit very low absorption and scattering properties. This outcome improves its potentiality for applications in large-scale reactors, because the resulting useful optical path length will be significantly large. Specifically, these results are compared with a typical photocatalytic substance, such as titanium dioxide to remark the differences.
Fil: Ortiz de la Plata, Guadalupe Beatriz. 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; Argentina
Fil: 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; Argentina
Fil: 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; Argentina
description Optical properties of solid catalysts needed for a rigorous modeling of heterogeneous photo-Fenton reaction kinetics and the ultimate reactor design have not been studied so far. Without these data, quantitative information concerning the influence of the radiation field in the process performance is almost impossible. These reactions are still under the first stages of their studies, and most of the effort has been aimed at elucidate yields, tentative mechanisms, the optimum operating pH and ways to reduce iron ions leaching to the aqueous solution. This work reports the values of above-mentioned parameters precisely calculated, resorting to specially designed spectrophotometer measurements coupled with the solution of the radiative transfer equation (RTE). Goethite, a natural occurring ferric oxide, was studied to obtain the values of the radiation linear volumetric absorption and scattering coefficients, as well as the phase function for scattering, some of them as a function of mass composition, and all of them as a function of the wavelength range between 310 and 500 nm. The results indicate that, in addition to its demonstrated ability to degrade effectively many contaminants, its optical properties exhibit very low absorption and scattering properties. This outcome improves its potentiality for applications in large-scale reactors, because the resulting useful optical path length will be significantly large. Specifically, these results are compared with a typical photocatalytic substance, such as titanium dioxide to remark the differences.
publishDate 2008
dc.date.none.fl_str_mv 2008-03
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/11336/24730
Ortiz de la Plata, Guadalupe Beatriz; Alfano, Orlando Mario; Cassano, Alberto Enrique; Optical Properties of Goethite Catalyst for Heterogeneous Photo-Fenton Reactions. Comparison with a Titanium Dioxide Catalyst; Elsevier Science Sa; Chemical Engineering Journal; 137; 2; 3-2008; 396-410
1385-8947
CONICET Digital
CONICET
url http://hdl.handle.net/11336/24730
identifier_str_mv Ortiz de la Plata, Guadalupe Beatriz; Alfano, Orlando Mario; Cassano, Alberto Enrique; Optical Properties of Goethite Catalyst for Heterogeneous Photo-Fenton Reactions. Comparison with a Titanium Dioxide Catalyst; Elsevier Science Sa; Chemical Engineering Journal; 137; 2; 3-2008; 396-410
1385-8947
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cej.2007.05.008
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1385894707003427
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 Elsevier Science Sa
publisher.none.fl_str_mv Elsevier Science Sa
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
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score 13.13397

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