Effect of trace elements on carbonate thermodynamic constants - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Procedia Earth and Planetary Science Année : 2017

Effect of trace elements on carbonate thermodynamic constants

(1) , (2) , (1) , (3) , (1)
1
2
3

Résumé

This study is a preliminary work on the description and the modeling of mechanisms potentially causing discrepancies between experimental data and thermodynamic calculation performed on carbonate equilibrium at high temperature. A better understanding of dolomite dissolution/precipitation processes that occur during its equilibration is important for investigations of high-level radioactive waste disposal or Carbon and Capture Storage (CCS). The first results demonstrated the fast dolomite equilibration in solution (within 12 days) and the good agreement between experimental and thermodynamic calculations at 25 °C for dolomite and calcite-dolomite systems whereas discrepancies are observed at higher temperature (80 °C). As shown from cathodoluminescence photomicrographs, one of the expected mechanisms causing those differences is the incorporation of trace elements such as Mg, Mn or Ba found in natural systems.
Fichier principal
Vignette du fichier
WRI-15 2016_DEBURE_Abstract No. 348rev1edit_DEBURE.pdf (419.77 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01333901 , version 1 (20-06-2016)

Identifiants

Citer

Mathieu Debure, German Montes-Hernandez, Catherine Lerouge, Benoit Madé, Christophe Tournassat. Effect of trace elements on carbonate thermodynamic constants. Procedia Earth and Planetary Science, 2017, 17, pp.730-733. ⟨10.1016/j.proeps.2016.12.185⟩. ⟨hal-01333901⟩
249 Consultations
237 Téléchargements

Altmetric

Partager

Gmail Facebook Twitter LinkedIn More