Extract of purple ipê as corrosion inhibitor for steels in acidic medium

Detalhes bibliográficos
Autor(a) principal: Santos, Douglas Camargo dos
Data de Publicação: 2019
Outros Autores: Cardoso, Sheila Pressentin
Tipo de documento: Artigo
Idioma: por
Título da fonte: Research, Society and Development
Texto Completo: https://rsdjournal.org/index.php/rsd/article/view/777
Resumo: Considering the constant requirement to improve, expand and consolidate efficient methods to protect metallic parts from corrosive processes, this research had the objective of evaluating the efficiency of the aqueous extract of purple ipê peels as potential corrosion inhibitor for carbon steel (P110) and stainless steel (22% Cr duplex), using hydrochloric acid as a corrosive medium. The inhibition efficiency of the extract was obtained from the corrosion rates of the steels identified by gravimetric tests. For carbon steel, the extract presented inhibition efficiency of 89.26%, using a concentration of 2.5 g/L of the extract, while for stainless steel the inhibition efficiency was 74.94%, for a concentration of 3.0 g/L extract. Adsorption isotherms were plotted with Frumkin's, showing the best fit for the two steels, the DG adsorption values of -19.56 K.J.mol-1 and -15.92 K.J.mol-1 for carbon and stainless steel, indicating a spontaneous process of physical adsorption.
id UNIFEI_056ef99b1314558bbc3f8c7c3a4292a5
oai_identifier_str oai:ojs.pkp.sfu.ca:article/777
network_acronym_str UNIFEI
network_name_str Research, Society and Development
repository_id_str
spelling Extract of purple ipê as corrosion inhibitor for steels in acidic mediumExtracto del ipê-púrpura como inhibidor de corrosión para aceros en medio ácidoExtrato do ipê-roxo como inibidor de corrosão para aços em meio ácidoCorrosion inhibitorpurple ipêcarbon steelstainless steel.Inhibidor de corrosiónIPE-púrpuraacero carbonoacero inoxidable.Inibidor de corrosãoipê-roxoaço carbonoaço inoxidável.Considering the constant requirement to improve, expand and consolidate efficient methods to protect metallic parts from corrosive processes, this research had the objective of evaluating the efficiency of the aqueous extract of purple ipê peels as potential corrosion inhibitor for carbon steel (P110) and stainless steel (22% Cr duplex), using hydrochloric acid as a corrosive medium. The inhibition efficiency of the extract was obtained from the corrosion rates of the steels identified by gravimetric tests. For carbon steel, the extract presented inhibition efficiency of 89.26%, using a concentration of 2.5 g/L of the extract, while for stainless steel the inhibition efficiency was 74.94%, for a concentration of 3.0 g/L extract. Adsorption isotherms were plotted with Frumkin's, showing the best fit for the two steels, the DG adsorption values of -19.56 K.J.mol-1 and -15.92 K.J.mol-1 for carbon and stainless steel, indicating a spontaneous process of physical adsorption.La investigación tuvo como objetivo evaluar la eficiencia del extracto acuoso de cáscaras del ipê-púrpura como potencial inhibidor de corrosión para el acero carbono (P110) y considerando la constante exigencia de perfeccionar, ampliar y consolidar métodos eficientes para proteger piezas metálicas de procesos corrosivos, acero inoxidable (dúplex 22% Cr), teniendo el ácido clorhídrico como medio corrosivo. La eficiencia de inhibición del extracto fue obtenida a partir de las tasas de corrosión de los aceros identificados por ensayos gravimétricos. Para el acero carbono el extracto presentó eficiencia de inhibición del 89,26%, con uso de una concentración de 2,5 g / L del extracto, mientras que para el acero inoxidable la eficiencia de inhibición fue de 74,94%, para una concentración del extracto de 3,0 g / L. Los Isotermas de adsorción fueron trazados con la de Frumkin presentando el mejor ajuste para los dos aceros, siendo calculados los valores de G de adsorción de -19,56 KJmol-1 y -15,92 KJmol-1 para respectivamente, acero al carbono e inoxidable, indicando un proceso espontáneo de adsorción física.Considerando a constante exigência de aprimorar, ampliar e consolidar métodos eficientes para proteger peças metálicas de processos corrosivos, essa pesquisa teve como objetivo avaliar a eficiência do extrato aquoso de cascas do ipê-roxo como potencial inibidor de corrosão para o aço carbono (P110) e aço inoxidável (duplex 22% Cr), tendo o ácido clorídrico como meio corrosivo. A eficiência de inibição do extrato foi obtida a partir das taxas de corrosão dos aços identificadas por ensaios gravimétricos. Para o aço carbono o extrato apresentou eficiência de inibição de 89,26%, com uso de uma concentração de 2,5 g/L do extrato, enquanto para o aço inoxidável a eficiência de inibição foi de 74,94%, para uma concentração do extrato de 3,0 g/L. Isotermas de adsorção foram traçadas com a de Frumkin apresentando o melhor ajuste para os dois aços, sendo calculados os valores de DG de adsorção de -19,56 K.J.mol-1 e -15,92 K.J.mol-1 para, respectivamente, o aço carbono e inoxidável, indicando um processo espontâneo de adsorção física. Research, Society and Development2019-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://rsdjournal.org/index.php/rsd/article/view/77710.33448/rsd-v8i2.777Research, Society and Development; Vol. 8 No. 2; e5082777Research, Society and Development; Vol. 8 Núm. 2; e5082777Research, Society and Development; v. 8 n. 2; e50827772525-3409reponame:Research, Society and Developmentinstname:Universidade Federal de Itajubá (UNIFEI)instacron:UNIFEIporhttps://rsdjournal.org/index.php/rsd/article/view/777/668Copyright (c) 2019 Douglas Camargo Mariano, Sheila Pressentin Cardosoinfo:eu-repo/semantics/openAccessSantos, Douglas Camargo dosCardoso, Sheila Pressentin2020-03-25T16:07:09Zoai:ojs.pkp.sfu.ca:article/777Revistahttps://rsdjournal.org/index.php/rsd/indexPUBhttps://rsdjournal.org/index.php/rsd/oairsd.articles@gmail.com2525-34092525-3409opendoar:2024-01-17T09:26:05.668414Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)false
dc.title.none.fl_str_mv Extract of purple ipê as corrosion inhibitor for steels in acidic medium
Extracto del ipê-púrpura como inhibidor de corrosión para aceros en medio ácido
Extrato do ipê-roxo como inibidor de corrosão para aços em meio ácido
title Extract of purple ipê as corrosion inhibitor for steels in acidic medium
spellingShingle Extract of purple ipê as corrosion inhibitor for steels in acidic medium
Santos, Douglas Camargo dos
Corrosion inhibitor
purple ipê
carbon steel
stainless steel.
Inhibidor de corrosión
IPE-púrpura
acero carbono
acero inoxidable.
Inibidor de corrosão
ipê-roxo
aço carbono
aço inoxidável.
title_short Extract of purple ipê as corrosion inhibitor for steels in acidic medium
title_full Extract of purple ipê as corrosion inhibitor for steels in acidic medium
title_fullStr Extract of purple ipê as corrosion inhibitor for steels in acidic medium
title_full_unstemmed Extract of purple ipê as corrosion inhibitor for steels in acidic medium
title_sort Extract of purple ipê as corrosion inhibitor for steels in acidic medium
author Santos, Douglas Camargo dos
author_facet Santos, Douglas Camargo dos
Cardoso, Sheila Pressentin
author_role author
author2 Cardoso, Sheila Pressentin
author2_role author
dc.contributor.author.fl_str_mv Santos, Douglas Camargo dos
Cardoso, Sheila Pressentin
dc.subject.por.fl_str_mv Corrosion inhibitor
purple ipê
carbon steel
stainless steel.
Inhibidor de corrosión
IPE-púrpura
acero carbono
acero inoxidable.
Inibidor de corrosão
ipê-roxo
aço carbono
aço inoxidável.
topic Corrosion inhibitor
purple ipê
carbon steel
stainless steel.
Inhibidor de corrosión
IPE-púrpura
acero carbono
acero inoxidable.
Inibidor de corrosão
ipê-roxo
aço carbono
aço inoxidável.
description Considering the constant requirement to improve, expand and consolidate efficient methods to protect metallic parts from corrosive processes, this research had the objective of evaluating the efficiency of the aqueous extract of purple ipê peels as potential corrosion inhibitor for carbon steel (P110) and stainless steel (22% Cr duplex), using hydrochloric acid as a corrosive medium. The inhibition efficiency of the extract was obtained from the corrosion rates of the steels identified by gravimetric tests. For carbon steel, the extract presented inhibition efficiency of 89.26%, using a concentration of 2.5 g/L of the extract, while for stainless steel the inhibition efficiency was 74.94%, for a concentration of 3.0 g/L extract. Adsorption isotherms were plotted with Frumkin's, showing the best fit for the two steels, the DG adsorption values of -19.56 K.J.mol-1 and -15.92 K.J.mol-1 for carbon and stainless steel, indicating a spontaneous process of physical adsorption.
publishDate 2019
dc.date.none.fl_str_mv 2019-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://rsdjournal.org/index.php/rsd/article/view/777
10.33448/rsd-v8i2.777
url https://rsdjournal.org/index.php/rsd/article/view/777
identifier_str_mv 10.33448/rsd-v8i2.777
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://rsdjournal.org/index.php/rsd/article/view/777/668
dc.rights.driver.fl_str_mv Copyright (c) 2019 Douglas Camargo Mariano, Sheila Pressentin Cardoso
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2019 Douglas Camargo Mariano, Sheila Pressentin Cardoso
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Research, Society and Development
publisher.none.fl_str_mv Research, Society and Development
dc.source.none.fl_str_mv Research, Society and Development; Vol. 8 No. 2; e5082777
Research, Society and Development; Vol. 8 Núm. 2; e5082777
Research, Society and Development; v. 8 n. 2; e5082777
2525-3409
reponame:Research, Society and Development
instname:Universidade Federal de Itajubá (UNIFEI)
instacron:UNIFEI
instname_str Universidade Federal de Itajubá (UNIFEI)
instacron_str UNIFEI
institution UNIFEI
reponame_str Research, Society and Development
collection Research, Society and Development
repository.name.fl_str_mv Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)
repository.mail.fl_str_mv rsd.articles@gmail.com
_version_ 1797052732954116096

Registros relacionados