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Mécanisme et cinétique de la déchloration réductrice de l’hexachlorobutadiène et de l’hexachloroéthane par action de réactifs à base de fer zéro-valent

Abstract : This work focused on the reductive dechlorination of hexachlorobutadiene (HCBD) and hexachloroethane (HCA). The first part consisted of experimental measurement of solubility data for both compounds (i) at different temperatures and (ii) in the presence of surfactants. Thermodynamic parameters for dissolution have been calculated in order to propose a physical explanation of the minimumsolubility observed between 12 and 45 °C. The second part, based on a preliminary selection of a reactant for its efficiency, aimed to investigate the mechanism of the reductive dechlorination of HCBD and HCA by Pd/Fe microparticles in suspension in polylactid acid. Different experimental conditions have shown that atomic hydrogen is the main reductant of the system. Different kinetic laws were then used for the modeling of the disappearance ofHCBDand HCA, taken separately and in mixture.
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https://tel.archives-ouvertes.fr/tel-01798363
Contributor : Romain Rodrigues <>
Submitted on : Tuesday, May 29, 2018 - 9:33:50 AM
Last modification on : Wednesday, April 1, 2020 - 10:16:17 AM
Long-term archiving on: : Thursday, August 30, 2018 - 12:34:07 PM

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  • HAL Id : tel-01798363, version 2

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Romain Rodrigues. Mécanisme et cinétique de la déchloration réductrice de l’hexachlorobutadiène et de l’hexachloroéthane par action de réactifs à base de fer zéro-valent. Ingénierie de l'environnement. Université Toulouse III - Paul Sabatier, 2017. Français. ⟨tel-01798363v2⟩

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