M
Michael Descostes
Researcher at Areva
Publications - 83
Citations - 1765
Michael Descostes is an academic researcher from Areva. The author has contributed to research in topics: Uranium & Chemistry. The author has an hindex of 18, co-authored 67 publications receiving 1237 citations. Previous affiliations of Michael Descostes include Areva NC.
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Pyrite dissolution in acidic media
TL;DR: In this paper, a multistep mechanism based on known aqueous redox chemistry of sulfur species was proposed to account for the deficit in the acidity of pyrite.
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Mobile uranium(IV)-bearing colloids in a mining-impacted wetland.
Yuheng Wang,Manon Frutschi,Elena I. Suvorova,Vannapha Phrommavanh,Michael Descostes,Alfatih A. A. Osman,Gerhard Geipel,Rizlan Bernier-Latmani +7 more
TL;DR: The analyses show the presence of U(IV) in soil as a non-crystalline species bound to amorphous Al-P-Fe-Si aggregates, and in porewater, as a distinct species associated with Fe and organic matter colloids.
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Adsorption of Uranium over NH2-Functionalized Ordered Silica in Aqueous Solutions.
Jérémie Huynh,Ruben Palacio,Fariba Safizadeh,Grégory Lefèvre,Michael Descostes,Lilian Eloy,Nadia Guignard,Julie Rousseau,Sébastien Royer,Sébastien Royer,Emmanuel Tertre,Isabelle Batonneau-Gener +11 more
TL;DR: The aim of this work was to obtain an in-depth understanding of the U(VI) adsorption mechanism over amino-functionalized mesoporous silica SBA-15 and highlights its high efficiency in aqueous media for U( VI) removal and preconcentration.
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Adsorption of radium and barium on goethite and ferrihydrite: A kinetic and surface complexation modelling study
Mustafa Sajih,Nicholas D. Bryan,Nicholas D. Bryan,Francis R. Livens,David J. Vaughan,Michael Descostes,Vannapha Phrommavanh,Jérémy Nos,Katherine Morris +8 more
TL;DR: Radium and barium uptake onto ferrihydrite and goethite have been studied in the concentration range 1nM to 5mM and from pH 4 to 10, to develop a model to predict radium behavior in legacy uranium mining wastes as discussed by the authors.
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Corrosion of iron archaeological artefacts in soil: Estimation of the average corrosion rates involving analytical techniques and thermodynamic calculations
TL;DR: In this paper, the average corrosion rate of low carbon steel after long burial periods was analyzed using two steps: the first one is based on the thickness measurement of the corrosion products, which after density correction and sample age consideration, provides a corrosion rate.