Environmental Application of the BaPb0.9Sb0.1O3 Perovskite: Guaiacol Electrodegradation

Detalhes bibliográficos
Autor(a) principal: Rodrigues,A.
Data de Publicação: 2014
Outros Autores: Pereira,J., Ciríaco,L., Lopes,A., Pacheco,M. J.
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=S0872-19042014000300005
Resumo: The perovskite BaPb0.9Sb0.1O3 was prepared through the ceramic route and, after being chemical, structural and electrochemically characterized, it was used in the electrochemical oxidation of guaiacol, using Na2SO4 as electrolyte, at current densities of 5 and 10 mA cm-2 and initial guaiacol concentrations of 50, 100 and 200 mg L-1 . The guaiacol degradation was followed by UV-Visible absorbance measurements, Chemical Oxygen Demand (COD) tests and Dissolved Organic Carbon (DOC) analysis. The combustion efficiency was also determined. Results have shown COD removals between 40 and 85 % and DOC removals from 34 to 66 % after 120 h assays. The absolute COD and DOC removals increase with guaiacol initial concentration and applied current density. The mineralization tendency, measured as the combustion efficiency, was maximum for the applied current density of 10 mA cm-2 and a guaiacol initial concentration of 200 mg L-1.
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spelling Environmental Application of the BaPb0.9Sb0.1O3 Perovskite: Guaiacol ElectrodegradationElectrochemical degradationGuaiacolPerovskiteBaPb0.9Sb0.1O3The perovskite BaPb0.9Sb0.1O3 was prepared through the ceramic route and, after being chemical, structural and electrochemically characterized, it was used in the electrochemical oxidation of guaiacol, using Na2SO4 as electrolyte, at current densities of 5 and 10 mA cm-2 and initial guaiacol concentrations of 50, 100 and 200 mg L-1 . The guaiacol degradation was followed by UV-Visible absorbance measurements, Chemical Oxygen Demand (COD) tests and Dissolved Organic Carbon (DOC) analysis. The combustion efficiency was also determined. Results have shown COD removals between 40 and 85 % and DOC removals from 34 to 66 % after 120 h assays. The absolute COD and DOC removals increase with guaiacol initial concentration and applied current density. The mineralization tendency, measured as the combustion efficiency, was maximum for the applied current density of 10 mA cm-2 and a guaiacol initial concentration of 200 mg L-1.Sociedade Portuguesa de Electroquímica2014-05-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042014000300005Portugaliae Electrochimica Acta v.32 n.3 2014reponame: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=S0872-19042014000300005Rodrigues,A.Pereira,J.Ciríaco,L.Lopes,A.Pacheco,M. J.info:eu-repo/semantics/openAccess2024-02-06T17:07:16Zoai:scielo:S0872-19042014000300005Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:20:15.576599Repositório 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 Environmental Application of the BaPb0.9Sb0.1O3 Perovskite: Guaiacol Electrodegradation
title Environmental Application of the BaPb0.9Sb0.1O3 Perovskite: Guaiacol Electrodegradation
spellingShingle Environmental Application of the BaPb0.9Sb0.1O3 Perovskite: Guaiacol Electrodegradation
Rodrigues,A.
Electrochemical degradation
Guaiacol
Perovskite
BaPb0.9Sb0.1O3
title_short Environmental Application of the BaPb0.9Sb0.1O3 Perovskite: Guaiacol Electrodegradation
title_full Environmental Application of the BaPb0.9Sb0.1O3 Perovskite: Guaiacol Electrodegradation
title_fullStr Environmental Application of the BaPb0.9Sb0.1O3 Perovskite: Guaiacol Electrodegradation
title_full_unstemmed Environmental Application of the BaPb0.9Sb0.1O3 Perovskite: Guaiacol Electrodegradation
title_sort Environmental Application of the BaPb0.9Sb0.1O3 Perovskite: Guaiacol Electrodegradation
author Rodrigues,A.
author_facet Rodrigues,A.
Pereira,J.
Ciríaco,L.
Lopes,A.
Pacheco,M. J.
author_role author
author2 Pereira,J.
Ciríaco,L.
Lopes,A.
Pacheco,M. J.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Rodrigues,A.
Pereira,J.
Ciríaco,L.
Lopes,A.
Pacheco,M. J.
dc.subject.por.fl_str_mv Electrochemical degradation
Guaiacol
Perovskite
BaPb0.9Sb0.1O3
topic Electrochemical degradation
Guaiacol
Perovskite
BaPb0.9Sb0.1O3
description The perovskite BaPb0.9Sb0.1O3 was prepared through the ceramic route and, after being chemical, structural and electrochemically characterized, it was used in the electrochemical oxidation of guaiacol, using Na2SO4 as electrolyte, at current densities of 5 and 10 mA cm-2 and initial guaiacol concentrations of 50, 100 and 200 mg L-1 . The guaiacol degradation was followed by UV-Visible absorbance measurements, Chemical Oxygen Demand (COD) tests and Dissolved Organic Carbon (DOC) analysis. The combustion efficiency was also determined. Results have shown COD removals between 40 and 85 % and DOC removals from 34 to 66 % after 120 h assays. The absolute COD and DOC removals increase with guaiacol initial concentration and applied current density. The mineralization tendency, measured as the combustion efficiency, was maximum for the applied current density of 10 mA cm-2 and a guaiacol initial concentration of 200 mg L-1.
publishDate 2014
dc.date.none.fl_str_mv 2014-05-01
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dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042014000300005
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dc.language.iso.fl_str_mv eng
language eng
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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.32 n.3 2014
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
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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
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