Conference Abstract
| 
10 Nov 2021
Conference Abstract |
| 10 Nov 2021
Deciphering porosity clogging at barrier interfaces in deep geological repositories for radioactive waste
Mara I. Lönartz
CORRESPONDING AUTHOR
Institute of Energy and Climate Research: Nuclear Waste Management and Reactor Safety (IEK-6), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
All authors are part of the Reactive Transport Modelling group.
Jenna Poonoosamy
Institute of Energy and Climate Research: Nuclear Waste Management and Reactor Safety (IEK-6), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
All authors are part of the Reactive Transport Modelling group.
Yuankai Yang
Institute of Energy and Climate Research: Nuclear Waste Management and Reactor Safety (IEK-6), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
All authors are part of the Reactive Transport Modelling group.
Naila Ait-Mouheb
Institute of Energy and Climate Research: Nuclear Waste Management and Reactor Safety (IEK-6), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
All authors are part of the Reactive Transport Modelling group.
Guido Deissmann
Institute of Energy and Climate Research: Nuclear Waste Management and Reactor Safety (IEK-6), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
All authors are part of the Reactive Transport Modelling group.
Dirk Bosbach
Institute of Energy and Climate Research: Nuclear Waste Management and Reactor Safety (IEK-6), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
All authors are part of the Reactive Transport Modelling group.
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The presentation will introduce the objectives of international nuclear material safeguards for the final disposal of spent nuclear fuel, highlight the current status of developments and discussions in terms of approaches and technologies for safeguarding spent fuel encapsulation and geological repository facilities, and give an outlook on implementing safeguards for final disposal in Germany.
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The present contribution provides an overview on the collaborative project iCROSS and reports selected results. The impact of considering complex coupled processes in repository subsystems for the assessment of the integrity of a given (generic) repository arrangement will be discussed. The interdisciplinary team combines experimental work in the lab, in the underground rock laboratory and environmental simulations in order to achieve process understanding across variable scales.
Cited articles
Chagneau, A., Claret, F., Enzmann, F., Kersten, M., Heck, S., Madé, B.,
and Schäfer, T.: Mineral precipitation-induced porosity reduction and its
effect on transport parameters in diffusion-controlled porous
media, Geochem. T., 16, 1–13, https://doi.org/10.1186/s12932-015-0027-z, 2015.
Deng, H., Tournassat, C., Molins, S., Claret, F., and Steefel, C. I.: A pore-scale investigation of mineral precipitation driven diffusivity change at the column-scale, Water Resour. Res., 57, 1–16, https://doi.org/10.1029/2020WR028483, 2021.
Poonoosamy, J., Westerwalbesloh, C., Deissmann, G., Mahrous, M., Curti, E., Churakov, S. V., Klinkenberg, M., Kohlheyer, D., Lieres, E., Bosbach, D., and Prasianakis, N. I.: A microfluidic experiment and pore scale modelling diagnostics for assessing mineral precipitation and dissolution in confined spaces, Chem. Geol., 528, 119264, https://doi.org/10.1016/j.chemgeo.2019.07.039, 2019.
Poonoosamy, J., Soulaine, C., Burmeister, A., Deissmann, G., Bosbach, D., and Roman, S.: Microfluidic flow-through reactor and 3D Raman imaging for in situ assessment of mineral reactivity in porous and fractured porous media, Lab Chip, 20, 2562–2571, https://doi.org/10.1039/d0lc00360c, 2020.
