Modelling radionuclide transport in fractured media with a dynamic update of Kd values
Abstract
Radionuclide transport in fractured crystalline rocks is a process of interest in evaluating long term safety of potential disposal systems for radioactive wastes. Given their numerical efficiency and the absence of numerical dispersion, Lagrangian methods (e.g. particle tracking algorithms) are appealing approaches that are often used in safety assessment (SA) analyses. In these approaches, many complex geochemical retention processes are typically lumped into a single parameter: the distribution coefficient (Kd). Usually, the distribution coefficient is assumed to be constant over the time frame of interest. However, this assumption could be critical under long-term geochemical changes as it is demonstrated that the distribution coefficient depends on the background chemical conditions (e.g. pH, Eh, and major chemistry). In this study, we provide a computational framework that combines the efficiency of Lagrangian methods with a sound and explicit description of the geochemical changes of the site and their influence on the radionuclide retention properties.
- Authors:
-
- AMPHOS 21 Consulting S.L., Barcelona (Spain)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Posiva Oy, Eurajoki (Finland)
- Swedish Nuclear Fuel and Waste Management Company, Stockholm (Sweden)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1265916
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Computers and Geosciences
- Additional Journal Information:
- Journal Volume: 86; Journal ID: ISSN 0098-3004
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 58 GEOSCIENCES; radionuclide transport; retention properties; background geochemistry; distribution coefficient
Citation Formats
Trinchero, Paolo, Painter, Scott L., Ebrahimi, Hedieh, Koskinen, Lasse, Molinero, Jorge, and Selroos, Jan -Olof. Modelling radionuclide transport in fractured media with a dynamic update of Kd values. United States: N. p., 2015.
Web. doi:10.1016/j.cageo.2015.10.005.
Trinchero, Paolo, Painter, Scott L., Ebrahimi, Hedieh, Koskinen, Lasse, Molinero, Jorge, & Selroos, Jan -Olof. Modelling radionuclide transport in fractured media with a dynamic update of Kd values. United States. https://doi.org/10.1016/j.cageo.2015.10.005
Trinchero, Paolo, Painter, Scott L., Ebrahimi, Hedieh, Koskinen, Lasse, Molinero, Jorge, and Selroos, Jan -Olof. Tue .
"Modelling radionuclide transport in fractured media with a dynamic update of Kd values". United States. https://doi.org/10.1016/j.cageo.2015.10.005. https://www.osti.gov/servlets/purl/1265916.
@article{osti_1265916,
title = {Modelling radionuclide transport in fractured media with a dynamic update of Kd values},
author = {Trinchero, Paolo and Painter, Scott L. and Ebrahimi, Hedieh and Koskinen, Lasse and Molinero, Jorge and Selroos, Jan -Olof},
abstractNote = {Radionuclide transport in fractured crystalline rocks is a process of interest in evaluating long term safety of potential disposal systems for radioactive wastes. Given their numerical efficiency and the absence of numerical dispersion, Lagrangian methods (e.g. particle tracking algorithms) are appealing approaches that are often used in safety assessment (SA) analyses. In these approaches, many complex geochemical retention processes are typically lumped into a single parameter: the distribution coefficient (Kd). Usually, the distribution coefficient is assumed to be constant over the time frame of interest. However, this assumption could be critical under long-term geochemical changes as it is demonstrated that the distribution coefficient depends on the background chemical conditions (e.g. pH, Eh, and major chemistry). In this study, we provide a computational framework that combines the efficiency of Lagrangian methods with a sound and explicit description of the geochemical changes of the site and their influence on the radionuclide retention properties.},
doi = {10.1016/j.cageo.2015.10.005},
journal = {Computers and Geosciences},
number = ,
volume = 86,
place = {United States},
year = {Tue Oct 13 00:00:00 EDT 2015},
month = {Tue Oct 13 00:00:00 EDT 2015}
}
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Works referencing / citing this record:
Statistical Formulation of Generalized Tracer Retention in Fractured Rock: TRACER RETENTION IN FRACTURED ROCK
journal, November 2017
- Cvetkovic, Vladimir
- Water Resources Research, Vol. 53, Issue 11
Stochastic modeling of flow and conservative transport in three-dimensional discrete fracture networks
journal, January 2019
- Lee, I-Hsien; Ni, Chuen-Fa; Lin, Fang-Pang
- Hydrology and Earth System Sciences, Vol. 23, Issue 1
Stochastic modeling of flow and conservative transport in three-dimensional discrete fracture networks
posted_content, August 2018
- Lee, I-Hsien; Ni, Chuen-Fa; Lin, Fang-Pang
- Hydrology and Earth System Sciences Discussions