A study of process variables for the photocatalytic degradation of rhodamine B
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/30441 |
Resumo: | The photoactivated degradation reaction of rhodamine B (RB) was studied using P-25 TiO2 (Degussa) as catalyst. Three process variables – temperature, initial pH, and catalyst concentration – were evaluated. Temperature had a slight effect on reaction rate; however, the combined effect of pH and catalyst concentration was greater. pH affected the catalyst particle’s adsorption of RB, altering the reaction rate. The concentration of the catalyst was significant only up to 0,65 g L-1. The effect of temperature was studied at optimum pH and 50ºC was found to be the optimum operational temperature. The effect of the presence of a surfactant (sodium dodecylsulfate, SDS) and ionic contaminants (Cl- and SO4 --) in the reaction system was also studied. The surfactant improved the catalyst’s adsorption of RB by more than 80%, increasing the degradation reaction rate as well. The ionic contaminants reduced the reaction rate. |
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Soares, Edilberto ToscaniLansarin, Marla AzarioMoro, Celso Camilo2011-07-30T06:01:28Z20070104-6632http://hdl.handle.net/10183/30441000583154The photoactivated degradation reaction of rhodamine B (RB) was studied using P-25 TiO2 (Degussa) as catalyst. Three process variables – temperature, initial pH, and catalyst concentration – were evaluated. Temperature had a slight effect on reaction rate; however, the combined effect of pH and catalyst concentration was greater. pH affected the catalyst particle’s adsorption of RB, altering the reaction rate. The concentration of the catalyst was significant only up to 0,65 g L-1. The effect of temperature was studied at optimum pH and 50ºC was found to be the optimum operational temperature. The effect of the presence of a surfactant (sodium dodecylsulfate, SDS) and ionic contaminants (Cl- and SO4 --) in the reaction system was also studied. The surfactant improved the catalyst’s adsorption of RB by more than 80%, increasing the degradation reaction rate as well. The ionic contaminants reduced the reaction rate.application/pdfengBrazilian journal of chemical engineering. São Paulo, SP. vol. 24, no. 1 (Jan./Mar. 2007), p. 29-36FotodegradaçãoRodamina B : DegradaçãoCorantesPhotocatalysisPhotocatalytic degradationDyesRhodamine BTiO2A study of process variables for the photocatalytic degradation of rhodamine Binfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000583154.pdf000583154.pdfTexto completo (inglês)application/pdf152628http://www.lume.ufrgs.br/bitstream/10183/30441/1/000583154.pdf13150777779486e0fe957419b781fe4bMD51TEXT000583154.pdf.txt000583154.pdf.txtExtracted Texttext/plain25614http://www.lume.ufrgs.br/bitstream/10183/30441/2/000583154.pdf.txt829f0d81c3ceed6ced5b6738d59cc048MD52THUMBNAIL000583154.pdf.jpg000583154.pdf.jpgGenerated Thumbnailimage/jpeg1733http://www.lume.ufrgs.br/bitstream/10183/30441/3/000583154.pdf.jpg1e572eef485c212cbcc0753b9485c1a8MD5310183/304412022-04-20 04:51:10.444275oai:www.lume.ufrgs.br:10183/30441Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2022-04-20T07:51:10Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
A study of process variables for the photocatalytic degradation of rhodamine B |
title |
A study of process variables for the photocatalytic degradation of rhodamine B |
spellingShingle |
A study of process variables for the photocatalytic degradation of rhodamine B Soares, Edilberto Toscani Fotodegradação Rodamina B : Degradação Corantes Photocatalysis Photocatalytic degradation Dyes Rhodamine B TiO2 |
title_short |
A study of process variables for the photocatalytic degradation of rhodamine B |
title_full |
A study of process variables for the photocatalytic degradation of rhodamine B |
title_fullStr |
A study of process variables for the photocatalytic degradation of rhodamine B |
title_full_unstemmed |
A study of process variables for the photocatalytic degradation of rhodamine B |
title_sort |
A study of process variables for the photocatalytic degradation of rhodamine B |
author |
Soares, Edilberto Toscani |
author_facet |
Soares, Edilberto Toscani Lansarin, Marla Azario Moro, Celso Camilo |
author_role |
author |
author2 |
Lansarin, Marla Azario Moro, Celso Camilo |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Soares, Edilberto Toscani Lansarin, Marla Azario Moro, Celso Camilo |
dc.subject.por.fl_str_mv |
Fotodegradação Rodamina B : Degradação Corantes |
topic |
Fotodegradação Rodamina B : Degradação Corantes Photocatalysis Photocatalytic degradation Dyes Rhodamine B TiO2 |
dc.subject.eng.fl_str_mv |
Photocatalysis Photocatalytic degradation Dyes Rhodamine B TiO2 |
description |
The photoactivated degradation reaction of rhodamine B (RB) was studied using P-25 TiO2 (Degussa) as catalyst. Three process variables – temperature, initial pH, and catalyst concentration – were evaluated. Temperature had a slight effect on reaction rate; however, the combined effect of pH and catalyst concentration was greater. pH affected the catalyst particle’s adsorption of RB, altering the reaction rate. The concentration of the catalyst was significant only up to 0,65 g L-1. The effect of temperature was studied at optimum pH and 50ºC was found to be the optimum operational temperature. The effect of the presence of a surfactant (sodium dodecylsulfate, SDS) and ionic contaminants (Cl- and SO4 --) in the reaction system was also studied. The surfactant improved the catalyst’s adsorption of RB by more than 80%, increasing the degradation reaction rate as well. The ionic contaminants reduced the reaction rate. |
publishDate |
2007 |
dc.date.issued.fl_str_mv |
2007 |
dc.date.accessioned.fl_str_mv |
2011-07-30T06:01:28Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/other |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/30441 |
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0104-6632 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000583154 |
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http://hdl.handle.net/10183/30441 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Brazilian journal of chemical engineering. São Paulo, SP. vol. 24, no. 1 (Jan./Mar. 2007), p. 29-36 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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