Publicação
Electrochemical Performance of Phyllanthus Muellerianus on the Corrosion of Concrete Steel-reinforcement in Industrial/Microbial Simulating-environment
| Resumo: | Electrochemical monitoring techniques were employed in this study to assess anticorrosion performance of Phyllanthus muellerianus leaf-extract on concrete steel- reinforcement in 0.5 M H2SO4, used for simulating industrial/microbial environment. For this, steel-reinforced concretes admixed with different concentrations of the natural plant leaf-extract were partially immersed in the acidic test-solution and subjected to electrochemical monitoring of corrosion potential, corrosion current and corrosion rate. Test responses analysed as per ASTM G16-95 R04, showed that the corrosion rate correlated, r = 84.93%, ANOVA p-value = 0.0403, with the leaf-extract concentration admixed in concrete and the ratio of the standard deviation of potential to the standard deviation of current. These identified the 0.3333% Phyllanthus muellerianus (per weight of cement) with optimum effectiveness at inhibiting steel-reinforcement corrosion both by the experimental model, η = 91.66 & pm;2.51%, and by the prediction from the correlation fitting model, η = 85.54 & pm;14.44%. Fittings of both the experimental and the predicted data followed the Flory-Huggins and the Frumkin adsorption isotherms which suggest prevalent mechanism of physical adsorption (physisorption) of the extract on steel-rebar surface. These support the use of Phyllanthus muellerianus as environmentally-friendly admixture for inhibiting concrete steel-reinforcement corrosion in the industrial/microbial service-environment. |
|---|---|
| Autores principais: | Okeniyi,Joshua O. |
| Outros Autores: | Loto,Cleophas A.; Popoola,Abimbola P. I. |
| Assunto: | steel-rebar corrosion in acidic environment environmentally-friendly inhibitor correlation fitting analysis inhibition efficiency adsorption isotherm |
| Ano: | 2014 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Fundação para a Ciência e Tecnologia |
| Idioma: | inglês |
| Origem: | SciELO Portugal |
| _version_ | 1868441711231893504 |
|---|---|
| author | Okeniyi,Joshua O. |
| author2 | Loto,Cleophas A. Popoola,Abimbola P. I. |
| author2_role | author author |
| author_facet | Okeniyi,Joshua O. Loto,Cleophas A. Popoola,Abimbola P. I. |
| author_role | author |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Okeniyi,Joshua O.\"},{\"Person.name\":\"Loto,Cleophas A.\"},{\"Person.name\":\"Popoola,Abimbola P. I.\"}] |
| datacite.creators.creator.creatorName.fl_str_mv | Okeniyi,Joshua O. Loto,Cleophas A. Popoola,Abimbola P. I. |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | steel-rebar corrosion in acidic environment environmentally-friendly inhibitor correlation fitting analysis inhibition efficiency adsorption isotherm |
| datacite.titles.title.fl_str_mv | Electrochemical Performance of Phyllanthus Muellerianus on the Corrosion of Concrete Steel-reinforcement in Industrial/Microbial Simulating-environment |
| dc.creator.none.fl_str_mv | Okeniyi,Joshua O. Loto,Cleophas A. Popoola,Abimbola P. I. |
| dc.format.none.fl_str_mv | text/html |
| dc.identifier.none.fl_str_mv | http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042014000300002 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Sociedade Portuguesa de Electroquímica |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.source.none.fl_str_mv | Portugaliae Electrochimica Acta v.32 n.3 2014 |
| dc.subject.none.fl_str_mv | steel-rebar corrosion in acidic environment environmentally-friendly inhibitor correlation fitting analysis inhibition efficiency adsorption isotherm |
| dc.title.fl_str_mv | Electrochemical Performance of Phyllanthus Muellerianus on the Corrosion of Concrete Steel-reinforcement in Industrial/Microbial Simulating-environment |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | Electrochemical monitoring techniques were employed in this study to assess anticorrosion performance of Phyllanthus muellerianus leaf-extract on concrete steel- reinforcement in 0.5 M H2SO4, used for simulating industrial/microbial environment. For this, steel-reinforced concretes admixed with different concentrations of the natural plant leaf-extract were partially immersed in the acidic test-solution and subjected to electrochemical monitoring of corrosion potential, corrosion current and corrosion rate. Test responses analysed as per ASTM G16-95 R04, showed that the corrosion rate correlated, r = 84.93%, ANOVA p-value = 0.0403, with the leaf-extract concentration admixed in concrete and the ratio of the standard deviation of potential to the standard deviation of current. These identified the 0.3333% Phyllanthus muellerianus (per weight of cement) with optimum effectiveness at inhibiting steel-reinforcement corrosion both by the experimental model, η = 91.66 & pm;2.51%, and by the prediction from the correlation fitting model, η = 85.54 & pm;14.44%. Fittings of both the experimental and the predicted data followed the Flory-Huggins and the Frumkin adsorption isotherms which suggest prevalent mechanism of physical adsorption (physisorption) of the extract on steel-rebar surface. These support the use of Phyllanthus muellerianus as environmentally-friendly admixture for inhibiting concrete steel-reinforcement corrosion in the industrial/microbial service-environment. |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | article |
| id | scielopt_80b3bbb18fdaf8e9ab990dda02cfeebe |
| identifier.url.fl_str_mv | http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042014000300002 |
| instacron_str | SciELO |
| institution | Fundação para a Ciência e Tecnologia |
| instname_str | Fundação para a Ciência e Tecnologia |
| language | eng |
| network_acronym_str | scielopt |
| network_name_str | SciELO Portugal |
| oai_identifier_str | oai:scielo:S0872-19042014000300002 |
| organization_str_mv | urn:organizationAcronym:scielo |
| person_str_mv | Okeniyi,Joshua O. Loto,Cleophas A. Popoola,Abimbola P. I. |
| publishDate | 2014 |
| publisher.none.fl_str_mv | Sociedade Portuguesa de Electroquímica |
| reponame_str | SciELO Portugal |
| repository_id_str | urn:repositoryAcronym:scielopt |
| service_str_mv | urn:repositoryAcronym:scielopt |
| spelling | Electrochemical Performance of Phyllanthus Muellerianus on the Corrosion of Concrete Steel-reinforcement in Industrial/Microbial Simulating-environmentOkeniyi,Joshua O.Loto,Cleophas A.Popoola,Abimbola P. I.steel-rebar corrosion in acidic environmentenvironmentally-friendly inhibitorcorrelation fitting analysisinhibition efficiencyadsorption isothermopen accesshttp://purl.org/coar/access_right/c_abf2http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042014000300002URLhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042014000300002URLHasVersion2014-05-01Electrochemical monitoring techniques were employed in this study to assess anticorrosion performance of Phyllanthus muellerianus leaf-extract on concrete steel- reinforcement in 0.5 M H2SO4, used for simulating industrial/microbial environment. For this, steel-reinforced concretes admixed with different concentrations of the natural plant leaf-extract were partially immersed in the acidic test-solution and subjected to electrochemical monitoring of corrosion potential, corrosion current and corrosion rate. Test responses analysed as per ASTM G16-95 R04, showed that the corrosion rate correlated, r = 84.93%, ANOVA p-value = 0.0403, with the leaf-extract concentration admixed in concrete and the ratio of the standard deviation of potential to the standard deviation of current. These identified the 0.3333% Phyllanthus muellerianus (per weight of cement) with optimum effectiveness at inhibiting steel-reinforcement corrosion both by the experimental model, η = 91.66 & pm;2.51%, and by the prediction from the correlation fitting model, η = 85.54 & pm;14.44%. Fittings of both the experimental and the predicted data followed the Flory-Huggins and the Frumkin adsorption isotherms which suggest prevalent mechanism of physical adsorption (physisorption) of the extract on steel-rebar surface. These support the use of Phyllanthus muellerianus as environmentally-friendly admixture for inhibiting concrete steel-reinforcement corrosion in the industrial/microbial service-environment.Sociedade Portuguesa de ElectroquímicaPortugaliae Electrochimica Acta v.32 n.3 2014text/htmlengjournal articlehttp://purl.org/coar/resource_type/c_6501literature |
| spellingShingle | Electrochemical Performance of Phyllanthus Muellerianus on the Corrosion of Concrete Steel-reinforcement in Industrial/Microbial Simulating-environment Okeniyi,Joshua O. steel-rebar corrosion in acidic environment environmentally-friendly inhibitor correlation fitting analysis inhibition efficiency adsorption isotherm |
| status | SINGLETON |
| subject.fl_str_mv | steel-rebar corrosion in acidic environment environmentally-friendly inhibitor correlation fitting analysis inhibition efficiency adsorption isotherm |
| title | Electrochemical Performance of Phyllanthus Muellerianus on the Corrosion of Concrete Steel-reinforcement in Industrial/Microbial Simulating-environment |
| title_full | Electrochemical Performance of Phyllanthus Muellerianus on the Corrosion of Concrete Steel-reinforcement in Industrial/Microbial Simulating-environment |
| title_fullStr | Electrochemical Performance of Phyllanthus Muellerianus on the Corrosion of Concrete Steel-reinforcement in Industrial/Microbial Simulating-environment |
| title_full_unstemmed | Electrochemical Performance of Phyllanthus Muellerianus on the Corrosion of Concrete Steel-reinforcement in Industrial/Microbial Simulating-environment |
| title_short | Electrochemical Performance of Phyllanthus Muellerianus on the Corrosion of Concrete Steel-reinforcement in Industrial/Microbial Simulating-environment |
| title_sort | Electrochemical Performance of Phyllanthus Muellerianus on the Corrosion of Concrete Steel-reinforcement in Industrial/Microbial Simulating-environment |
| topic | steel-rebar corrosion in acidic environment environmentally-friendly inhibitor correlation fitting analysis inhibition efficiency adsorption isotherm |
| topic_facet | steel-rebar corrosion in acidic environment environmentally-friendly inhibitor correlation fitting analysis inhibition efficiency adsorption isotherm |
| url | http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042014000300002 |
| visible | 1 |