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Importance of weak interactions in the formulation of organic phases for efficient L/L extraction of metals

Damien Bourgeois 1 Asmae El Maangar Sandrine Dourdain 
1 LHyS - Systèmes HYbrides pour la Séparation
ICSM - UMR 5257 - Institut de Chimie Séparative de Marcoule
Abstract : Recent experimental studies demonstrate the need to take into account weak interactions in the understanding of solvent extraction processes. This well-established industrial technology now beneficiates of a supramolecular approach, complementary to the traditional analysis based on coordination chemistry. In this article, we focus on the integration of a colloidal approach in the analysis of solvent extraction systems: organic phases employed are complex fluids, in which extracting molecules self-assemble into reverse aggregates. We detail the available analytical tools employed towards characterization of these organic phases, and emphasize the recent results in aggregation driven extraction. All experimental data is discussed in light of theoretical approaches which propose adequate thermodynamic models and shed light on the importance of entropy on the phenomena. Diluent effects or synergism have been successfully rationalized, efficient new formulations based on a physico-chemical analysis have been proposed, and the door is now open for further development at industrial scale.
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https://hal.umontpellier.fr/hal-03698291
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Soumis le : vendredi 17 juin 2022 - 19:02:42
Dernière modification le : vendredi 5 août 2022 - 10:56:44

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Damien Bourgeois, Asmae El Maangar, Sandrine Dourdain. Importance of weak interactions in the formulation of organic phases for efficient L/L extraction of metals. Current Opinion in Colloid & Interface Science, 2020, 46, pp.36-51. ⟨10.1016/j.cocis.2020.03.004⟩. ⟨hal-03698291⟩

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