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Reduction of potential ennoblement of stainless steel in natural seawater by an ecofriendly biopolymer
University Brest, France; Université Saint Joseph, France.
University Brest, France.
Université Saint Joseph, France.
University Brest, France.
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2020 (English)In: Journal of Environmental Chemical Engineering, ISSN 2160-6544, E-ISSN 2213-3437, Vol. 8, no 1, article id 103609Article in journal (Refereed) Published
Abstract [en]

The effect of biofilm formation on passive stainless steel in seawater environments is of primary importance since it leads to potential ennoblement of surfaces and subsequently to localized corrosion such as pitting and crevice corrosion. This study aims at developing an ecofriendly alginate biopolymer containing both non-toxic calcium and a limited amount of biocidal zinc ions which inhibits this effect. For this purpose, calcium alginate containing less than 1 % of zinc ions localized in the vicinity of the steel surface in natural and renewed seawater is demonstrated to reduce significantly the ennoblement process of steel. After 1 month of immersion, a mass loss of only 4 % of the active material is observed authorizing thereby long-term protection of steel in real environment. 

Place, publisher, year, edition, pages
Elsevier Ltd , 2020. Vol. 8, no 1, article id 103609
Keywords [en]
Alginate, Antimicrobial, Biofilm, Biopolymer, Ennoblement, Steel, Biofilms, Biomolecules, Biopolymers, Calcium, Crevice corrosion, Environmental protection, Localized corrosion, Seawater corrosion, Steel corrosion, Zinc, Active material, Biofilm formation, Calcium alginate, Potential ennoblement, Real environments, Seawater environment, Stainless steel
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-43472DOI: 10.1016/j.jece.2019.103609Scopus ID: 2-s2.0-85077745668OAI: oai:DiVA.org:ri-43472DiVA, id: diva2:1390079
Note

Funding details: Ministère de l'Education Nationale, de l'Enseignement Superieur et de la Recherche, MESR; Funding details: 2015-2020 MATECOM; Funding details: European Commission, EU; Funding details: European Regional Development Fund, FEDER; Funding details: Saint Joseph University, USJ; Funding text 1: This work is supported by the European Union through the European Regional Development Fund (ERDF), the Ministry of Higher Education and Research , the Région Bretagne, Biogenouest , the Conseil général du Finistère and Brest Métropole Océane , through the CPER Project 2015-2020 MATECOM. This work was supported by the Francophone University Agency and the research council of the Saint Joseph University . Appendix A

Available from: 2020-01-31 Created: 2020-01-31 Last updated: 2020-01-31Bibliographically approved

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