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Improvement of the electrochemical behaviour of Zn-electroplated steel using regenerated Cr(III) passivation baths

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Improvement of the electrochemical behaviour of Zn-electroplated steel using regenerated Cr(III) passivation baths

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dc.contributor.author García Antón, José es_ES
dc.contributor.author Fernández Domene, Ramón Manuel es_ES
dc.contributor.author Sánchez Tovar, Rita es_ES
dc.contributor.author Escrivá Cerdán, Clara es_ES
dc.contributor.author Leiva García, Rafael es_ES
dc.contributor.author García, Verónica es_ES
dc.contributor.author Urtiaga, Ane es_ES
dc.date.accessioned 2015-05-07T10:24:20Z
dc.date.available 2015-05-07T10:24:20Z
dc.date.issued 2014-05-24
dc.identifier.issn 0009-2509
dc.identifier.uri http://hdl.handle.net/10251/49858
dc.description.abstract [EN] Conversion coatings based on trivalent chromium are more sensitive to the presence of zinc and iron impurities than the chromate formulations. This fact contributes to a decrease in the quality of passivation and to the generation of a significant amount of hazardous liquid waste. Recently, a new eco-innovative process based on Emulsion Pertraction Technology (EPT) is being implemented at industrial scale for selectively removing Zn and Fe from spent passivation baths in order to enhance the lifetime of the Cr (III) baths. In this study, the effect of Zn and Fe removal on the electrochemical behaviour of Zn-electroplated steel samples was evaluated by means of polarisation curves and electrochemical impedance spectroscopy measurements at open circuit potential conditions in 3.5 g/L NaCl solutions. The main objective was to assess the benefits brought by EPT using electrochemical methods. Cr (III) passivation baths regenerated using the EPT process have been compared to the bath used in a local industry as well as to fresh and spent baths. According to the results, the samples passivated in the EPT regenerated bath showed a significant improvement in their electrochemical behaviour compared to the samples passivated in the spent baths. This study concluded the suitability of EPT for regenerating Cr (III) passivation baths. es_ES
dc.description.sponsorship The authors would like to express their gratitude to the Project TIGI (FP7, European Commission, Grant agreement 218390) and to Dr. Asuncion Jaime for her translation assistance.
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation.ispartof Chemical Engineering Science es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Trivalent chromium es_ES
dc.subject Passivation baths es_ES
dc.subject Emulsion Pertraction Technology es_ES
dc.subject Zn-electroplated steel es_ES
dc.subject.classification INGENIERIA QUIMICA es_ES
dc.title Improvement of the electrochemical behaviour of Zn-electroplated steel using regenerated Cr(III) passivation baths es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.ces.2014.03.005
dc.relation.projectID info:eu-repo/grantAgreement/EC/FP7/218390/EU/Towards an innovative galvanic industry/ es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Química y Nuclear - Departament d'Enginyeria Química i Nuclear es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto de Seguridad Industrial, Radiofísica y Medioambiental - Institut de Seguretat Industrial, Radiofísica i Mediambiental es_ES
dc.description.bibliographicCitation García Antón, J.; Fernández Domene, RM.; Sánchez Tovar, R.; Escrivá Cerdán, C.; Leiva García, R.; García, V.; Urtiaga, A. (2014). Improvement of the electrochemical behaviour of Zn-electroplated steel using regenerated Cr(III) passivation baths. Chemical Engineering Science. 111:402-409. https://doi.org/10.1016/j.ces.2014.03.005 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1016/j.ces.2014.03.005 es_ES
dc.description.upvformatpinicio 402 es_ES
dc.description.upvformatpfin 409 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 111 es_ES
dc.relation.senia 278752
dc.contributor.funder European Commission


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