A Comparative Study on Chemical and Electrochemical Degradation of Reactive Blue 4 Dye

Detalhes bibliográficos
Autor(a) principal: Carneiro,Patricia A.
Data de Publicação: 2003
Outros Autores: Fugivara,Cecílio S., Nogueira,Raquel F. P., Boralle,Nivaldo, Zanon,Maria V. B.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042003000100004
Resumo: The degradation of a reactive blue 4 dye in acidic solution has been compared using electrochemical reduction and oxidation at reticulated vitreous carbon electrode (RVC) and Ti/SnO2/SbOx (3%mol)/RuO2 (30%mol) electrodes and photo-Fenton method under UV irradiation. The reduction of RB4 dye at -0.6 V on RVC electrode results in 50% of color removal and up to 64% of TOC removal. The direct oxidation of RB4 dye at +1 V on RVC promotes only the oxidation of amine group and there is no color removal. On SnO2 electrode, 58% TOC was removed and the decolorization is around 100 % after 1 hour of electrolysis at 2.4 V indicating good efficiency. Best performance was obtained by photo-Fenton method that indicates 80% elimination of TOC and 100% of color removal but the method requires oxidant addition and time of rest to remove the generated residues.
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spelling A Comparative Study on Chemical and Electrochemical Degradation of Reactive Blue 4 Dyeanthraquinone dyeselectro-reductionelectro-oxidationPhoto-FentonReactive Blue 4The degradation of a reactive blue 4 dye in acidic solution has been compared using electrochemical reduction and oxidation at reticulated vitreous carbon electrode (RVC) and Ti/SnO2/SbOx (3%mol)/RuO2 (30%mol) electrodes and photo-Fenton method under UV irradiation. The reduction of RB4 dye at -0.6 V on RVC electrode results in 50% of color removal and up to 64% of TOC removal. The direct oxidation of RB4 dye at +1 V on RVC promotes only the oxidation of amine group and there is no color removal. On SnO2 electrode, 58% TOC was removed and the decolorization is around 100 % after 1 hour of electrolysis at 2.4 V indicating good efficiency. Best performance was obtained by photo-Fenton method that indicates 80% elimination of TOC and 100% of color removal but the method requires oxidant addition and time of rest to remove the generated residues.Sociedade Portuguesa de Electroquímica2003-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042003000100004Portugaliae Electrochimica Acta v.21 n.1 2003reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAPenghttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042003000100004Carneiro,Patricia A.Fugivara,Cecílio S.Nogueira,Raquel F. P.Boralle,NivaldoZanon,Maria V. B.info:eu-repo/semantics/openAccess2024-02-06T17:06:40Zoai:scielo:S0872-19042003000100004Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:19:55.701763Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv A Comparative Study on Chemical and Electrochemical Degradation of Reactive Blue 4 Dye
title A Comparative Study on Chemical and Electrochemical Degradation of Reactive Blue 4 Dye
spellingShingle A Comparative Study on Chemical and Electrochemical Degradation of Reactive Blue 4 Dye
Carneiro,Patricia A.
anthraquinone dyes
electro-reduction
electro-oxidation
Photo-Fenton
Reactive Blue 4
title_short A Comparative Study on Chemical and Electrochemical Degradation of Reactive Blue 4 Dye
title_full A Comparative Study on Chemical and Electrochemical Degradation of Reactive Blue 4 Dye
title_fullStr A Comparative Study on Chemical and Electrochemical Degradation of Reactive Blue 4 Dye
title_full_unstemmed A Comparative Study on Chemical and Electrochemical Degradation of Reactive Blue 4 Dye
title_sort A Comparative Study on Chemical and Electrochemical Degradation of Reactive Blue 4 Dye
author Carneiro,Patricia A.
author_facet Carneiro,Patricia A.
Fugivara,Cecílio S.
Nogueira,Raquel F. P.
Boralle,Nivaldo
Zanon,Maria V. B.
author_role author
author2 Fugivara,Cecílio S.
Nogueira,Raquel F. P.
Boralle,Nivaldo
Zanon,Maria V. B.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Carneiro,Patricia A.
Fugivara,Cecílio S.
Nogueira,Raquel F. P.
Boralle,Nivaldo
Zanon,Maria V. B.
dc.subject.por.fl_str_mv anthraquinone dyes
electro-reduction
electro-oxidation
Photo-Fenton
Reactive Blue 4
topic anthraquinone dyes
electro-reduction
electro-oxidation
Photo-Fenton
Reactive Blue 4
description The degradation of a reactive blue 4 dye in acidic solution has been compared using electrochemical reduction and oxidation at reticulated vitreous carbon electrode (RVC) and Ti/SnO2/SbOx (3%mol)/RuO2 (30%mol) electrodes and photo-Fenton method under UV irradiation. The reduction of RB4 dye at -0.6 V on RVC electrode results in 50% of color removal and up to 64% of TOC removal. The direct oxidation of RB4 dye at +1 V on RVC promotes only the oxidation of amine group and there is no color removal. On SnO2 electrode, 58% TOC was removed and the decolorization is around 100 % after 1 hour of electrolysis at 2.4 V indicating good efficiency. Best performance was obtained by photo-Fenton method that indicates 80% elimination of TOC and 100% of color removal but the method requires oxidant addition and time of rest to remove the generated residues.
publishDate 2003
dc.date.none.fl_str_mv 2003-01-01
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042003000100004
url http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042003000100004
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042003000100004
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Portuguesa de Electroquímica
publisher.none.fl_str_mv Sociedade Portuguesa de Electroquímica
dc.source.none.fl_str_mv Portugaliae Electrochimica Acta v.21 n.1 2003
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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