Solvent Effect and Adsorption Study of Mild Steel Protection from Acid Corrosion Using Eco-friendly Formulations of Annatto Extract

Detalhes bibliográficos
Autor(a) principal: Ituen,Ekemini
Data de Publicação: 2017
Outros Autores: Umoren,I. S.
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=S0872-19042017000100003
Resumo: Annatto extract (dye) was investigated as a cheap and ecologically friendly alternative corrosion inhibitor. The corrosion process was monitored with mild steel coupons in 1.0 M hydrochloric acid at temperatures between 30 °C to 90 °C by weight loss and spectroscopic techniques. The dye effectively inhibited the corrosion of mild steel in the acid at the studied temperatures. Inhibition efficiency obtained was found to vary with temperature and concentration of the dye. Adsorption models were used to predict the nature of the dye-steel surface interaction. Thermodynamic models provided evidence of spontaneous physical and chemical adsorption mechanism with the evolution of heat. Kinetic studies revealed a deepening effect on the activation potential in the presence of the dye. The effect of solvent and synergistic intensifiers on the effectiveness of the dye was also assessed. Heavy metal ion composition in the formulation was determined and was within the limit of environmental and health safety.
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spelling Solvent Effect and Adsorption Study of Mild Steel Protection from Acid Corrosion Using Eco-friendly Formulations of Annatto Extractadsorptionannattocorrosion inhibitor formulationinhibition effectivenessintensifiersolventsAnnatto extract (dye) was investigated as a cheap and ecologically friendly alternative corrosion inhibitor. The corrosion process was monitored with mild steel coupons in 1.0 M hydrochloric acid at temperatures between 30 °C to 90 °C by weight loss and spectroscopic techniques. The dye effectively inhibited the corrosion of mild steel in the acid at the studied temperatures. Inhibition efficiency obtained was found to vary with temperature and concentration of the dye. Adsorption models were used to predict the nature of the dye-steel surface interaction. Thermodynamic models provided evidence of spontaneous physical and chemical adsorption mechanism with the evolution of heat. Kinetic studies revealed a deepening effect on the activation potential in the presence of the dye. The effect of solvent and synergistic intensifiers on the effectiveness of the dye was also assessed. Heavy metal ion composition in the formulation was determined and was within the limit of environmental and health safety.Sociedade Portuguesa de Electroquímica2017-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042017000100003Portugaliae Electrochimica Acta v.35 n.1 2017reponame: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=S0872-19042017000100003Ituen,EkeminiUmoren,I. S.info:eu-repo/semantics/openAccess2024-02-06T17:07:23Zoai:scielo:S0872-19042017000100003Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:20:19.312717Repositório 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 Solvent Effect and Adsorption Study of Mild Steel Protection from Acid Corrosion Using Eco-friendly Formulations of Annatto Extract
title Solvent Effect and Adsorption Study of Mild Steel Protection from Acid Corrosion Using Eco-friendly Formulations of Annatto Extract
spellingShingle Solvent Effect and Adsorption Study of Mild Steel Protection from Acid Corrosion Using Eco-friendly Formulations of Annatto Extract
Ituen,Ekemini
adsorption
annatto
corrosion inhibitor formulation
inhibition effectiveness
intensifier
solvents
title_short Solvent Effect and Adsorption Study of Mild Steel Protection from Acid Corrosion Using Eco-friendly Formulations of Annatto Extract
title_full Solvent Effect and Adsorption Study of Mild Steel Protection from Acid Corrosion Using Eco-friendly Formulations of Annatto Extract
title_fullStr Solvent Effect and Adsorption Study of Mild Steel Protection from Acid Corrosion Using Eco-friendly Formulations of Annatto Extract
title_full_unstemmed Solvent Effect and Adsorption Study of Mild Steel Protection from Acid Corrosion Using Eco-friendly Formulations of Annatto Extract
title_sort Solvent Effect and Adsorption Study of Mild Steel Protection from Acid Corrosion Using Eco-friendly Formulations of Annatto Extract
author Ituen,Ekemini
author_facet Ituen,Ekemini
Umoren,I. S.
author_role author
author2 Umoren,I. S.
author2_role author
dc.contributor.author.fl_str_mv Ituen,Ekemini
Umoren,I. S.
dc.subject.por.fl_str_mv adsorption
annatto
corrosion inhibitor formulation
inhibition effectiveness
intensifier
solvents
topic adsorption
annatto
corrosion inhibitor formulation
inhibition effectiveness
intensifier
solvents
description Annatto extract (dye) was investigated as a cheap and ecologically friendly alternative corrosion inhibitor. The corrosion process was monitored with mild steel coupons in 1.0 M hydrochloric acid at temperatures between 30 °C to 90 °C by weight loss and spectroscopic techniques. The dye effectively inhibited the corrosion of mild steel in the acid at the studied temperatures. Inhibition efficiency obtained was found to vary with temperature and concentration of the dye. Adsorption models were used to predict the nature of the dye-steel surface interaction. Thermodynamic models provided evidence of spontaneous physical and chemical adsorption mechanism with the evolution of heat. Kinetic studies revealed a deepening effect on the activation potential in the presence of the dye. The effect of solvent and synergistic intensifiers on the effectiveness of the dye was also assessed. Heavy metal ion composition in the formulation was determined and was within the limit of environmental and health safety.
publishDate 2017
dc.date.none.fl_str_mv 2017-01-01
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=S0872-19042017000100003
url http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042017000100003
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042017000100003
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.35 n.1 2017
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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