Multicomponent diffusion of a suite of tracers (HTO, Cl, Br, I, Na, Sr, Cs) in a single sample of Opalinus Clay

Appelo, C.A.J.; Loon, Luc R. Van; Wersin, Paul

doi:10.1016/j.gca.2009.11.013

Cited by 190 publications

(181 citation statements)

References 69 publications

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“…Modeling of diffusive transport in clay rocks (natural system) is complicated by the existence of heterogeneities at different scales and coupling between diffusive and electro-chemical processes (Revil and Leroy, 2004;Appelo et al, 2010;Bourg et al, 2003;Jougnot et al, 2009). At a local scale, different pore spaces co-exist within a representative elementary volume (REV), or a "point" within the context of continuum mechanics.…”

Section: Improved Model For Large-scale Radionuclide Transport In Clamentioning

confidence: 99%

“…In the literature, two kinds of modeling approaches for diffusive transport in clay materials are available (Revil and Leroy, 2004;Appelo et al, 2010;Bourg et al, 2003;Jougnot et al, 2009). One is based on the explicit consideration of coupling between diffusive and electro-chemical processes.…”

Section: Improved Model For Large-scale Radionuclide Transport In Clamentioning

confidence: 99%

“…Although different degrees of successes have been obtained by using the currently available phenomenological approaches to analyze several site-specific tests (e.g., Appelo et al, 2010;Motellier et al, 2007), some key questions regarding their usefulness are open, considering the semi-empirical feature of the approaches. For example, a systematic evaluation of their effectiveness in capturing effects of pore-scale heterogeneities (the existence of different pore spaces) is not available yet for general natural clay systems.…”

Section: Improved Model For Large-scale Radionuclide Transport In Clamentioning

confidence: 99%

See 2 more Smart Citations

Modeling Coupled Processes in Clay Formations for Radioactive Waste Disposal

Liu¹

2010

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Section: Improved Model For Large-scale Radionuclide Transport In Clamentioning

confidence: 99%

Section: Improved Model For Large-scale Radionuclide Transport In Clamentioning

confidence: 99%

Section: Improved Model For Large-scale Radionuclide Transport In Clamentioning

confidence: 99%

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Modeling Coupled Processes in Clay Formations for Radioactive Waste Disposal

Liu¹

2010

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“…The model calculates diffusional transport of the gases through the Opalinus Clay by explicit finite differences in a radial one-dimension configuration. Each dissolved gas is supposed to access the entire water-filled porosity but it is given its own diffusion coefficient in pure water (Appelo and Wersin 2007;Appelo et al 2010). The effective Fig.…”

Section: Model Descriptionmentioning

confidence: 99%

Natural gas extraction and artificial gas injection experiments in Opalinus Clay, Mont Terri rock laboratory (Switzerland)

Vinsot

Appelo²,

Lundy

et al. 2017

Swiss J Geosci

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Two experiments have been installed at Mont Terri in 2004 and 2009 that allowed gas circulation within a borehole at a pressure between 1 and 2 bar. These experiments made it possible to observe the natural gases that were initially dissolved in pore-water degassing into the borehole and to monitor their content evolution in the borehole over several years. They also allowed for inert (He, Ne) and reactive (H 2 ) gases to be injected into the borehole with the aim either to determine their diffusion properties into the rock pore-water or to evaluate their removal reaction kinetics. The natural gases identified were CO 2 , light alkanes, He, and more importantly N 2 . The natural concentration of four gases in Opalinus Clay porewater was evaluated at the experiment location: N 2 2.2 mmol/L ± 25%, CH 4 0.30 mmol/L ± 25%, C 2 H 6 0.023 mmol/L ± 25%, C 3 H 8 0.012 mmol/L ± 25%.Retention properties of methane, ethane, and propane were estimated. Ne injection tests helped to characterize rock diffusion properties regarding the dissolved inert gases. These experimental results are highly relevant towards evaluating how the fluid composition could possibly evolve in the drifts of a radioactive waste disposal facility.

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“…Treatises on multicomponent diffusion relevant to waste disposal in geologic settings are found in Appelo and Wersin (2007) and Appelo et al (2010).…”

Section: Other Relevant Physicsmentioning

confidence: 99%

Nuclear Energy Advanced Modeling and Simulation (NEAMS) Waste Integrated Performance and Safety Codes (IPSC) : FY10 development and integration.

Criscenti¹,

Sassani²,

Argüello³

et al. 2011

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This report describes the progress in fiscal year 2010 in developing the Waste Integrated Performance and Safety Codes (IPSC) in support of the U.S. Department of Energy (DOE) Office of Nuclear Energy Advanced Modeling and Simulation (NEAMS) Campaign. The goal of the Waste IPSC is to develop an integrated suite of computational modeling and simulation capabilities to quantitatively assess the long-term performance of waste forms in the engineered and geologic environments of a radioactive waste storage or disposal system. The Waste IPSC will provide this simulation capability (1) for a range of disposal concepts, waste form types, engineered repository designs, and geologic settings, (2) for a range of time scales and distances, (3) with appropriate consideration of the inherent uncertainties, and (4) in accordance with robust verification, validation, and software quality requirements.Waste IPSC activities in fiscal year 2010 focused on specifying a challenge problem to demonstrate proof of concept, developing a verification and validation plan, and performing an initial gap analyses to identify candidate codes and tools to support the development and integration of the Waste IPSC. The current Waste IPSC strategy is to acquire and integrate the necessary Waste IPSC capabilities wherever feasible, and develop only those capabilities that cannot be acquired or suitably integrated, verified, or validated. This year-end progress report documents the FY10 status of acquisition, development, and integration of thermal-hydrologicchemical-mechanical (THCM) code capabilities, frameworks, and enabling tools and infrastructure.iv ACKNOWLEDGEMENTS

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Multicomponent diffusion of a suite of tracers (HTO, Cl, Br, I, Na, Sr, Cs) in a single sample of Opalinus Clay

Cited by 190 publications

References 69 publications

Modeling Coupled Processes in Clay Formations for Radioactive Waste Disposal

Modeling Coupled Processes in Clay Formations for Radioactive Waste Disposal

Natural gas extraction and artificial gas injection experiments in Opalinus Clay, Mont Terri rock laboratory (Switzerland)

Nuclear Energy Advanced Modeling and Simulation (NEAMS) Waste Integrated Performance and Safety Codes (IPSC) : FY10 development and integration.

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