Photocatalytic reactors with suspended and immobilized TiO 2 : Comparative efficiency evaluation

Autores
Manassero, Agustina; Satuf, María Lucila; Alfano, Orlando Mario
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The efficiency of three photocatalytic reactor configurations for the degradation of the micropollutant clofibric acid in water was assessed. The following reaction systems were tested: (i) a slurry reactor with suspended TiO2 particles; (ii) a fixed-film reactor with TiO2 immobilized onto the reactor window; and (iii) a fixed-bed reactor filled with TiO2-coated glass rings. The influence of the catalyst concentration in the suspended system and the number of the catalyst coatings in the immobilized systems were evaluated. The performances of the reactors, under the experimental condition of highest reaction rate for each configuration, were compared with the aid of two parameters: (i) the photonic efficiency (g), which is the ratio of the reaction rate to the rate of incident photons; and (ii) the quantum efficiency (gRxn), which is the ratio of the reaction rate to the photon absorption rate. The obtained values of gRxn were 4.59, 2.96 and 2.02% for the slurry reactor, the fixed-bed reactor and the fixed-film reactor, respectively. Although the slurry reactor was the most efficient configuration, the fixed-bed reactor rendered a value of quantum efficiency only one third lower than the suspended system, making this configuration very convenient for photocatalytic reactions. The analysis of the reaction rate, the photon absorption rate and the quantum efficiency are essential to rationally improve the design, configuration and experimental conditions of photocatalytic reactors.
Fil: Manassero, Agustina. 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: Satuf, María Lucila. 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
Materia
Photocatalysis
Efficiency Parameters
Wastewater Treatment
Reactor Design
Slurry Reactor
Immobilized Catalyst
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:11336/24205
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/24205
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Photocatalytic reactors with suspended and immobilized TiO 2 : Comparative efficiency evaluationManassero, AgustinaSatuf, María LucilaAlfano, Orlando MarioPhotocatalysisEfficiency ParametersWastewater TreatmentReactor DesignSlurry ReactorImmobilized Catalysthttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2The efficiency of three photocatalytic reactor configurations for the degradation of the micropollutant clofibric acid in water was assessed. The following reaction systems were tested: (i) a slurry reactor with suspended TiO2 particles; (ii) a fixed-film reactor with TiO2 immobilized onto the reactor window; and (iii) a fixed-bed reactor filled with TiO2-coated glass rings. The influence of the catalyst concentration in the suspended system and the number of the catalyst coatings in the immobilized systems were evaluated. The performances of the reactors, under the experimental condition of highest reaction rate for each configuration, were compared with the aid of two parameters: (i) the photonic efficiency (g), which is the ratio of the reaction rate to the rate of incident photons; and (ii) the quantum efficiency (gRxn), which is the ratio of the reaction rate to the photon absorption rate. The obtained values of gRxn were 4.59, 2.96 and 2.02% for the slurry reactor, the fixed-bed reactor and the fixed-film reactor, respectively. Although the slurry reactor was the most efficient configuration, the fixed-bed reactor rendered a value of quantum efficiency only one third lower than the suspended system, making this configuration very convenient for photocatalytic reactions. The analysis of the reaction rate, the photon absorption rate and the quantum efficiency are essential to rationally improve the design, configuration and experimental conditions of photocatalytic reactors.Fil: Manassero, Agustina. 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: Satuf, María Lucila. 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; ArgentinaElsevier Science Sa2017-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/24205Manassero, Agustina; Satuf, María Lucila; Alfano, Orlando Mario; Photocatalytic reactors with suspended and immobilized TiO 2 : Comparative efficiency evaluation; Elsevier Science Sa; Chemical Engineering Journal; 326; 10-2017; 29-361385-8947CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1385894717308379info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cej.2017.05.087info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:40:45Zoai:ri.conicet.gov.ar:11336/24205instacron: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:34982025-09-29 09:40:45.444CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Photocatalytic reactors with suspended and immobilized TiO 2 : Comparative efficiency evaluation
title Photocatalytic reactors with suspended and immobilized TiO 2 : Comparative efficiency evaluation
spellingShingle Photocatalytic reactors with suspended and immobilized TiO 2 : Comparative efficiency evaluation
Manassero, Agustina
Photocatalysis
Efficiency Parameters
Wastewater Treatment
Reactor Design
Slurry Reactor
Immobilized Catalyst
title_short Photocatalytic reactors with suspended and immobilized TiO 2 : Comparative efficiency evaluation
title_full Photocatalytic reactors with suspended and immobilized TiO 2 : Comparative efficiency evaluation
title_fullStr Photocatalytic reactors with suspended and immobilized TiO 2 : Comparative efficiency evaluation
title_full_unstemmed Photocatalytic reactors with suspended and immobilized TiO 2 : Comparative efficiency evaluation
title_sort Photocatalytic reactors with suspended and immobilized TiO 2 : Comparative efficiency evaluation
dc.creator.none.fl_str_mv Manassero, Agustina
Satuf, María Lucila
Alfano, Orlando Mario
author Manassero, Agustina
author_facet Manassero, Agustina
Satuf, María Lucila
Alfano, Orlando Mario
author_role author
author2 Satuf, María Lucila
Alfano, Orlando Mario
author2_role author
author
dc.subject.none.fl_str_mv Photocatalysis
Efficiency Parameters
Wastewater Treatment
Reactor Design
Slurry Reactor
Immobilized Catalyst
topic Photocatalysis
Efficiency Parameters
Wastewater Treatment
Reactor Design
Slurry Reactor
Immobilized Catalyst
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The efficiency of three photocatalytic reactor configurations for the degradation of the micropollutant clofibric acid in water was assessed. The following reaction systems were tested: (i) a slurry reactor with suspended TiO2 particles; (ii) a fixed-film reactor with TiO2 immobilized onto the reactor window; and (iii) a fixed-bed reactor filled with TiO2-coated glass rings. The influence of the catalyst concentration in the suspended system and the number of the catalyst coatings in the immobilized systems were evaluated. The performances of the reactors, under the experimental condition of highest reaction rate for each configuration, were compared with the aid of two parameters: (i) the photonic efficiency (g), which is the ratio of the reaction rate to the rate of incident photons; and (ii) the quantum efficiency (gRxn), which is the ratio of the reaction rate to the photon absorption rate. The obtained values of gRxn were 4.59, 2.96 and 2.02% for the slurry reactor, the fixed-bed reactor and the fixed-film reactor, respectively. Although the slurry reactor was the most efficient configuration, the fixed-bed reactor rendered a value of quantum efficiency only one third lower than the suspended system, making this configuration very convenient for photocatalytic reactions. The analysis of the reaction rate, the photon absorption rate and the quantum efficiency are essential to rationally improve the design, configuration and experimental conditions of photocatalytic reactors.
Fil: Manassero, Agustina. 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: Satuf, María Lucila. 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
description The efficiency of three photocatalytic reactor configurations for the degradation of the micropollutant clofibric acid in water was assessed. The following reaction systems were tested: (i) a slurry reactor with suspended TiO2 particles; (ii) a fixed-film reactor with TiO2 immobilized onto the reactor window; and (iii) a fixed-bed reactor filled with TiO2-coated glass rings. The influence of the catalyst concentration in the suspended system and the number of the catalyst coatings in the immobilized systems were evaluated. The performances of the reactors, under the experimental condition of highest reaction rate for each configuration, were compared with the aid of two parameters: (i) the photonic efficiency (g), which is the ratio of the reaction rate to the rate of incident photons; and (ii) the quantum efficiency (gRxn), which is the ratio of the reaction rate to the photon absorption rate. The obtained values of gRxn were 4.59, 2.96 and 2.02% for the slurry reactor, the fixed-bed reactor and the fixed-film reactor, respectively. Although the slurry reactor was the most efficient configuration, the fixed-bed reactor rendered a value of quantum efficiency only one third lower than the suspended system, making this configuration very convenient for photocatalytic reactions. The analysis of the reaction rate, the photon absorption rate and the quantum efficiency are essential to rationally improve the design, configuration and experimental conditions of photocatalytic reactors.
publishDate 2017
dc.date.none.fl_str_mv 2017-10
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/11336/24205
Manassero, Agustina; Satuf, María Lucila; Alfano, Orlando Mario; Photocatalytic reactors with suspended and immobilized TiO 2 : Comparative efficiency evaluation; Elsevier Science Sa; Chemical Engineering Journal; 326; 10-2017; 29-36
1385-8947
CONICET Digital
CONICET
url http://hdl.handle.net/11336/24205
identifier_str_mv Manassero, Agustina; Satuf, María Lucila; Alfano, Orlando Mario; Photocatalytic reactors with suspended and immobilized TiO 2 : Comparative efficiency evaluation; Elsevier Science Sa; Chemical Engineering Journal; 326; 10-2017; 29-36
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/url/http://www.sciencedirect.com/science/article/pii/S1385894717308379
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cej.2017.05.087
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
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 13.070432

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