Electrochemical Study of a Simulated Spent Pickling Solution

[EN] The electrochemical behaviour of the main components of the rinsing pickling solutions of the hot dip galvanizing industry, Zn(2+) and Fe(2+) in HCl, was studied by cyclic voltammetry. The effect of different variables (such as the scan rate, the inversion potential, the addition of zinc, stirr...

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Autores: García Gabaldón, Montserrat|||0000-0003-4254-6733, Ortega Navarro, Emma María|||0000-0001-6902-018X, Pérez-Herranz, Valentín|||0000-0002-4010-0888, Carrillo Abad, Jordi
Tipo de recurso: artículo
Fecha de publicación:2011
País:España
Institución:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:riunet.upv.es:10251/63617
Acceso en línea:https://riunet.upv.es/handle/10251/63617
Access Level:acceso abierto
Palabra clave:Pickling baths
zinc
iron
electrochemical deposition
cyclic voltammetry
hot dip galvanizing
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spelling Electrochemical Study of a Simulated Spent Pickling SolutionGarcía Gabaldón, Montserrat|||0000-0003-4254-6733Ortega Navarro, Emma María|||0000-0001-6902-018XPérez-Herranz, Valentín|||0000-0002-4010-0888Carrillo Abad, JordiPickling bathszincironelectrochemical depositioncyclic voltammetryhot dip galvanizing[EN] The electrochemical behaviour of the main components of the rinsing pickling solutions of the hot dip galvanizing industry, Zn(2+) and Fe(2+) in HCl, was studied by cyclic voltammetry. The effect of different variables (such as the scan rate, the inversion potential, the addition of zinc, stirring of the solution and the presence of iron) on the current-potential curves was studied. The electrochemical reduction of zinc proceeded by a typical nucleation process. Decreasing the HCl concentration enhanced the zinc UPD process because of the less influence of the hydrogen evolution reaction (HER), and a prepeak corresponding to the zinc UPD process was observed previously to the zinc OPD step. The effect of the scan rate on the OPD peak was studied and showed that the Zn(2+) reduction was an irreversible process which was not only controlled by diffusion but also charge transfer kinetics. The diffusion coefficient of zinc was calculated (1.66. 10(-9) m(2) s(-1)). In view of iron deposition, it was confirmed that the pH is an essentially important factor and at low pH values was virtually impossible to deposit iron. The electrochemical study of mixtures containing both zinc and iron showed that the presence of zinc produced an inhibition of the iron deposition process which was confirmed by the observation of the deposits. The SEM images revealed only the presence of zinc grains. However, if the ratio Fe(II)/Zn(II) was higher, the voltammograms main features were more similar to those obtained for pure iron solutions.Montserrat Garcia Gabaldón wants to express their gratitude to the Universidad Politecnica de Valencia for the economical support in the project reference: PAID-06-08, and to the Generalitat Valenciana for the financing of the project reference: GV/2010/029.Departamento de Ingeniería Química y NuclearEscuela Técnica Superior de Ingeniería IndustrialInstituto Universitario de Seguridad Industrial, Radiofísica y MedioambientalGeneralitat ValencianaUniversitat Politècnica de ValènciaRepositorio Institucional de la Universitat Politècnica de València Riunet20112011-02-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://riunet.upv.es/handle/10251/63617reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengGeneralitat Valenciana https://doi.org/10.13039/501100003359 GV%2F2010%2F029Universitat Politècnica de València https://doi.org/10.13039/501100004233 PAID-06-08open accesshttp://purl.org/coar/access_right/c_abf2Reserva de todos los derechoshttp://rightsstatements.org/vocab/InC/1.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/636172026-06-13T07:49:27Z
dc.title.none.fl_str_mv Electrochemical Study of a Simulated Spent Pickling Solution
title Electrochemical Study of a Simulated Spent Pickling Solution
spellingShingle Electrochemical Study of a Simulated Spent Pickling Solution
García Gabaldón, Montserrat|||0000-0003-4254-6733
Pickling baths
zinc
iron
electrochemical deposition
cyclic voltammetry
hot dip galvanizing
title_short Electrochemical Study of a Simulated Spent Pickling Solution
title_full Electrochemical Study of a Simulated Spent Pickling Solution
title_fullStr Electrochemical Study of a Simulated Spent Pickling Solution
title_full_unstemmed Electrochemical Study of a Simulated Spent Pickling Solution
title_sort Electrochemical Study of a Simulated Spent Pickling Solution
dc.creator.none.fl_str_mv García Gabaldón, Montserrat|||0000-0003-4254-6733
Ortega Navarro, Emma María|||0000-0001-6902-018X
Pérez-Herranz, Valentín|||0000-0002-4010-0888
Carrillo Abad, Jordi
author García Gabaldón, Montserrat|||0000-0003-4254-6733
author_facet García Gabaldón, Montserrat|||0000-0003-4254-6733
Ortega Navarro, Emma María|||0000-0001-6902-018X
Pérez-Herranz, Valentín|||0000-0002-4010-0888
Carrillo Abad, Jordi
author_role author
author2 Ortega Navarro, Emma María|||0000-0001-6902-018X
Pérez-Herranz, Valentín|||0000-0002-4010-0888
Carrillo Abad, Jordi
author2_role author
author
author
dc.contributor.none.fl_str_mv Departamento de Ingeniería Química y Nuclear
Escuela Técnica Superior de Ingeniería Industrial
Instituto Universitario de Seguridad Industrial, Radiofísica y Medioambiental
Generalitat Valenciana
Universitat Politècnica de València
Repositorio Institucional de la Universitat Politècnica de València Riunet
dc.subject.none.fl_str_mv Pickling baths
zinc
iron
electrochemical deposition
cyclic voltammetry
hot dip galvanizing
topic Pickling baths
zinc
iron
electrochemical deposition
cyclic voltammetry
hot dip galvanizing
description [EN] The electrochemical behaviour of the main components of the rinsing pickling solutions of the hot dip galvanizing industry, Zn(2+) and Fe(2+) in HCl, was studied by cyclic voltammetry. The effect of different variables (such as the scan rate, the inversion potential, the addition of zinc, stirring of the solution and the presence of iron) on the current-potential curves was studied. The electrochemical reduction of zinc proceeded by a typical nucleation process. Decreasing the HCl concentration enhanced the zinc UPD process because of the less influence of the hydrogen evolution reaction (HER), and a prepeak corresponding to the zinc UPD process was observed previously to the zinc OPD step. The effect of the scan rate on the OPD peak was studied and showed that the Zn(2+) reduction was an irreversible process which was not only controlled by diffusion but also charge transfer kinetics. The diffusion coefficient of zinc was calculated (1.66. 10(-9) m(2) s(-1)). In view of iron deposition, it was confirmed that the pH is an essentially important factor and at low pH values was virtually impossible to deposit iron. The electrochemical study of mixtures containing both zinc and iron showed that the presence of zinc produced an inhibition of the iron deposition process which was confirmed by the observation of the deposits. The SEM images revealed only the presence of zinc grains. However, if the ratio Fe(II)/Zn(II) was higher, the voltammograms main features were more similar to those obtained for pure iron solutions.
publishDate 2011
dc.date.none.fl_str_mv 2011
2011-02-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://riunet.upv.es/handle/10251/63617
url https://riunet.upv.es/handle/10251/63617
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Generalitat Valenciana https://doi.org/10.13039/501100003359 GV%2F2010%2F029
Universitat Politècnica de València https://doi.org/10.13039/501100004233 PAID-06-08
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reserva de todos los derechos
http://rightsstatements.org/vocab/InC/1.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reserva de todos los derechos
http://rightsstatements.org/vocab/InC/1.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
instname:Universitat Politècnica de València (UPV)
instname_str Universitat Politècnica de València (UPV)
reponame_str RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
collection RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
repository.name.fl_str_mv
repository.mail.fl_str_mv
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