Radiation field in an annular photocatalytic reactor by the P1 approximation

Heterogeneous photocatalysis with titanium dioxide TiO2 is an advanced oxidation processes that uses ultraviolet radiation to carry out reactions leading to the degradation of polluting agents in water. For the development and scaling up of efficient photocatalytic processes it is important to model...

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Detalhes bibliográficos
Autores: Cuevas, SA, Arancibia-Bulnes, CA, Serrano, B
Tipo de documento: artigo
Estado:Versão publicada
Data de publicação:2007
País:México
Recursos:Universidad Nacional Autónoma de México
Repositório:Sistema de Información de la Facultad de Ciencias, UNAM
OAI Identifier:oai:repositorio.fciencias.unam.mx:11154/2264
Acesso em linha:http://hdl.handle.net/11154/2264
Access Level:Acceso aberto
Palavra-chave:Engineering, Chemical
photocatalysis
photoreactor
P1 approximation
radiative transfer
titanium dioxide
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spelling Radiation field in an annular photocatalytic reactor by the P1 approximationCuevas, SAArancibia-Bulnes, CASerrano, BEngineering, ChemicalphotocatalysisphotoreactorP1 approximationradiative transfertitanium dioxideHeterogeneous photocatalysis with titanium dioxide TiO2 is an advanced oxidation processes that uses ultraviolet radiation to carry out reactions leading to the degradation of polluting agents in water. For the development and scaling up of efficient photocatalytic processes it is important to model the transport of radiation in the reactor volume, because it affects the photo reaction. In the present work we have used the P1 approximation of radiative transfer theory to evaluate radiation distributions inside a specific annular photocatalytic reactor known as Photo CREC-Water II. The reactor consists of two concentric tubes with a TiO2/water suspension flowing axially in the annular space between them, and a lamp at the center of the inner tube. The theoretical results are compared with experimental data from measurements of radiation transmission through several observation windows in the external reactor wall. In general the model describes the observed experimental results well. Due to the nature of the employed approximation a good quantitative agreement is possible only for suspensions with a large optical depth. For small optical depths the agreement is adequate only for the central portion of the reactor length.2011-01-22T10:27:08Z2011-01-22T10:27:08Z2007info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1542-6580http://hdl.handle.net/11154/226410755reponame:Sistema de Información de la Facultad de Ciencias, UNAMinstname:Universidad Nacional Autónoma de Méxicoinstacron:UNAMenInternational Journal of Chemical Reactor Engineeringinfo:eu-repo/semantics/openAccessoai:repositorio.fciencias.unam.mx:11154/22642025-09-17T19:20:55Z
dc.title.none.fl_str_mv Radiation field in an annular photocatalytic reactor by the P1 approximation
title Radiation field in an annular photocatalytic reactor by the P1 approximation
spellingShingle Radiation field in an annular photocatalytic reactor by the P1 approximation
Cuevas, SA
Engineering, Chemical
photocatalysis
photoreactor
P1 approximation
radiative transfer
titanium dioxide
title_short Radiation field in an annular photocatalytic reactor by the P1 approximation
title_full Radiation field in an annular photocatalytic reactor by the P1 approximation
title_fullStr Radiation field in an annular photocatalytic reactor by the P1 approximation
title_full_unstemmed Radiation field in an annular photocatalytic reactor by the P1 approximation
title_sort Radiation field in an annular photocatalytic reactor by the P1 approximation
dc.creator.none.fl_str_mv Cuevas, SA
Arancibia-Bulnes, CA
Serrano, B
author Cuevas, SA
author_facet Cuevas, SA
Arancibia-Bulnes, CA
Serrano, B
author_role author
author2 Arancibia-Bulnes, CA
Serrano, B
author2_role author
author
dc.subject.none.fl_str_mv Engineering, Chemical
photocatalysis
photoreactor
P1 approximation
radiative transfer
titanium dioxide
topic Engineering, Chemical
photocatalysis
photoreactor
P1 approximation
radiative transfer
titanium dioxide
description Heterogeneous photocatalysis with titanium dioxide TiO2 is an advanced oxidation processes that uses ultraviolet radiation to carry out reactions leading to the degradation of polluting agents in water. For the development and scaling up of efficient photocatalytic processes it is important to model the transport of radiation in the reactor volume, because it affects the photo reaction. In the present work we have used the P1 approximation of radiative transfer theory to evaluate radiation distributions inside a specific annular photocatalytic reactor known as Photo CREC-Water II. The reactor consists of two concentric tubes with a TiO2/water suspension flowing axially in the annular space between them, and a lamp at the center of the inner tube. The theoretical results are compared with experimental data from measurements of radiation transmission through several observation windows in the external reactor wall. In general the model describes the observed experimental results well. Due to the nature of the employed approximation a good quantitative agreement is possible only for suspensions with a large optical depth. For small optical depths the agreement is adequate only for the central portion of the reactor length.
publishDate 2007
dc.date.none.fl_str_mv 2007
2011-01-22T10:27:08Z
2011-01-22T10:27:08Z
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
dc.identifier.none.fl_str_mv 1542-6580
http://hdl.handle.net/11154/2264
1075
identifier_str_mv 1542-6580
1075
url http://hdl.handle.net/11154/2264
dc.language.none.fl_str_mv en
language_invalid_str_mv en
dc.relation.none.fl_str_mv International Journal of Chemical Reactor Engineering
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv 5
reponame:Sistema de Información de la Facultad de Ciencias, UNAM
instname:Universidad Nacional Autónoma de México
instacron:UNAM
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instacron_str UNAM
institution UNAM
reponame_str Sistema de Información de la Facultad de Ciencias, UNAM
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