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Influence of a fractured medium on pyrite oxidation reaction

yvan Crenner 1 Jocelyne Erhel 1 
1 FLUMINANCE - Fluid Flow Analysis, Description and Control from Image Sequences
IRMAR - Institut de Recherche Mathématique de Rennes, IRSTEA - Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture, Inria Rennes – Bretagne Atlantique
Abstract : Fractures must be carefully considered for the geological disposal of radioactive wastes. They critically enhance diffusivity, speed up solute transport, extend mixing fronts, and in turn, modify the physicochemical conditions of reactivity in the Excavation Damaged Zone (EDZ) of the galleries. On the other hand, the pyrite oxidation could be considered like the main reaction due to the diffusion of the oxygen through the gallery. Moreover, we assume that this reaction is complete in these geological conditions. First, we propose a numerical explicit reactive transport model in a fractured medium for an overall reaction. Afterwards, we present simulations outputs of the pyrite-oxygen reaction in EDZ zone.
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Submitted on : Thursday, November 23, 2017 - 1:54:20 PM
Last modification on : Friday, May 20, 2022 - 9:04:52 AM


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  • HAL Id : hal-01646245, version 1


yvan Crenner, Jocelyne Erhel. Influence of a fractured medium on pyrite oxidation reaction. MAMERN 2017 - International Conference on Approximation Methods and Numerical Modelling in Environment and Natural Resources, May 2017, Oujda, Morocco. ⟨hal-01646245⟩



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