Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1016/j.apgeochem.2009.04.001 |
| Title (Primary) | Modeling reactive transport in non-ideal aqueous-solid solution system |
| Author | Shao, H.B.
; Dmytrieva, S.V.; Kolditz, O.
; Kulik, D.A.; Pfingsten, W.; Kosakowski, G. |
| Source Titel | Applied Geochemistry |
| Year | 2009 |
| Department | ENVINF |
| Volume | 24 |
| Issue | 7 |
| Page From | 1287 |
| Page To | 1300 |
| Language | englisch |
| Abstract | The numerical simulation of reactive mass transport processes in complex geochemical environments is an important tool for the performance assessment of future waste repositories. A new combination of the multi-component mass transport code GeoSys/RockFlow and the Gibbs Energy Minimization (GEM) equilibrium solver GEM-Selektor is used to calculate the accurate equilibrium of multiple non-ideal solid solutions which are important for the immobilization of radionuclides such as Ra. The coupled code is verified by a widely used benchmark of dissolution-precipitation in a calcite-dolomite system. A more complex application shown in this paper is the transport of Ra in the near-field of a nuclear waste repository. Depending on the initial inventories of Sr, Ba and sulfate, non-ideal sulfate and carbonate solid solutions can fix mobile Ra cations. Due to the complex geochemical interactions, the reactive transport simulations can describe the migration of Ra in a much more realistic way than using the traditional linear K-D approach only. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=622 |
| Shao, H.B., Dmytrieva, S.V., Kolditz, O., Kulik, D.A., Pfingsten, W., Kosakowski, G. (2009): Modeling reactive transport in non-ideal aqueous-solid solution system Appl. Geochem. 24 (7), 1287 - 1300 10.1016/j.apgeochem.2009.04.001 |
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