Coupled flow and transport modelling of a large-scale in situ migration experiment with 14C-labelled natural organic matter colloids in Boom Clay
Twenty-five years ago, a unique long-term and large-scale in situ experiment with 14C-labelled natural organic matter (NOM) was set up at the HADES underground research facility in Mol (Belgium) to study its migration behaviour. Natural organic matter plays an important role in the mobility of vario...
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| मुख्य लेखकों: | , , , , |
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| स्वरूप: | Online |
| भाषा: | अंग्रेज़ी |
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Geological Society of London
2024
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| ऑनलाइन पहुंच: | https://directory.doabooks.org/handle/20.500.12854/139688 |
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| _version_ | 1869519935278940160 |
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| author | Govaerts, Joan Maes, Norbert Durce, Delphine Aertsens, Marc Brassinnes, Stéphane |
| author_browse | Aertsens, Marc Brassinnes, Stéphane Durce, Delphine Govaerts, Joan Maes, Norbert |
| author_facet | Govaerts, Joan Maes, Norbert Durce, Delphine Aertsens, Marc Brassinnes, Stéphane |
| author_sort | Govaerts, Joan |
| collection | Directory of Open Access Books |
| description | Twenty-five years ago, a unique long-term and large-scale in situ experiment with 14C-labelled natural organic matter (NOM) was set up at the HADES underground research facility in Mol (Belgium) to study its migration behaviour. Natural organic matter plays an important role in the mobility of various safety-relevant radionuclides, which is critical in the context of Safety & Performance Assessment (SA/PA) calculations for a possible nuclear waste repository. The objective of this work is to enlarge the confidence in current NOM transport models by validating them with the in situ experiment, which is still continued to this day. Stepwise adding more complexity to the model resulted in a 10-parameter model with which excellent fits to the data are obtained. The model considers two different fractions that are transported by advection and diffusion and can be subject to both irreversible and reversible immobilization processes. The associated fitted parameter values compare well with values determined on small-scale migration experiments. This builds confidence in the NOM transport model, which in turn contributes to the confidence in the outcome of the radionuclide migration calculations performed in the context of SA/PA. These results again highlight the incredible value of such long-running experiments at underground research facilities like HADES. |
| format | Online |
| id | doab-20.500.12854ir-139688 |
| institution | Directory of Open Access Books |
| language | eng |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| publisher | Geological Society of London |
| publisherStr | Geological Society of London |
| record_format | ojs |
| spelling | doab-20.500.12854ir-1396882024-07-08T11:06:22Z Coupled flow and transport modelling of a large-scale in situ migration experiment with 14C-labelled natural organic matter colloids in Boom Clay Govaerts, Joan Maes, Norbert Durce, Delphine Aertsens, Marc Brassinnes, Stéphane Economic geology Environmental geology Radioactive waste thema EDItEUR::R Earth Sciences, Geography, Environment, Planning thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TQ Environmental science, engineering and technology Twenty-five years ago, a unique long-term and large-scale in situ experiment with 14C-labelled natural organic matter (NOM) was set up at the HADES underground research facility in Mol (Belgium) to study its migration behaviour. Natural organic matter plays an important role in the mobility of various safety-relevant radionuclides, which is critical in the context of Safety & Performance Assessment (SA/PA) calculations for a possible nuclear waste repository. The objective of this work is to enlarge the confidence in current NOM transport models by validating them with the in situ experiment, which is still continued to this day. Stepwise adding more complexity to the model resulted in a 10-parameter model with which excellent fits to the data are obtained. The model considers two different fractions that are transported by advection and diffusion and can be subject to both irreversible and reversible immobilization processes. The associated fitted parameter values compare well with values determined on small-scale migration experiments. This builds confidence in the NOM transport model, which in turn contributes to the confidence in the outcome of the radionuclide migration calculations performed in the context of SA/PA. These results again highlight the incredible value of such long-running experiments at underground research facilities like HADES. Published 2024-07-08T11:06:19Z 2024-07-08T11:06:19Z 2023-02-20 chapter 9781786205933 https://directory.doabooks.org/handle/20.500.12854/139688 eng Geological Society Special Publications application/pdf Attribution 4.0 International https://www.lyellcollection.org/doi/full/10.1144/SP536-2022-22 Geological Society of London Geological Disposal of Radioactive Waste in Deep Clay Formations: 40 Years of RD&D in the Belgian URL HADES https://doi.org/10.1144/SP536-2022-22 https://doi.org/10.1144/SP536-2022-22 0742c201-37ab-44ae-8f4e-a768089f313c fa1cba04-9782-4da9-985d-e8f3cc9d75d2 9781786205933 536 145-158 Bath, UK open access |
| spellingShingle | Economic geology Environmental geology Radioactive waste thema EDItEUR::R Earth Sciences, Geography, Environment, Planning thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TQ Environmental science, engineering and technology Govaerts, Joan Maes, Norbert Durce, Delphine Aertsens, Marc Brassinnes, Stéphane Coupled flow and transport modelling of a large-scale in situ migration experiment with 14C-labelled natural organic matter colloids in Boom Clay |
| title | Coupled flow and transport modelling of a large-scale in situ migration experiment with 14C-labelled natural organic matter colloids in Boom Clay |
| title_full | Coupled flow and transport modelling of a large-scale in situ migration experiment with 14C-labelled natural organic matter colloids in Boom Clay |
| title_fullStr | Coupled flow and transport modelling of a large-scale in situ migration experiment with 14C-labelled natural organic matter colloids in Boom Clay |
| title_full_unstemmed | Coupled flow and transport modelling of a large-scale in situ migration experiment with 14C-labelled natural organic matter colloids in Boom Clay |
| title_short | Coupled flow and transport modelling of a large-scale in situ migration experiment with 14C-labelled natural organic matter colloids in Boom Clay |
| title_sort | coupled flow and transport modelling of a large scale in situ migration experiment with 14c labelled natural organic matter colloids in boom clay |
| topic | Economic geology Environmental geology Radioactive waste thema EDItEUR::R Earth Sciences, Geography, Environment, Planning thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TQ Environmental science, engineering and technology |
| topic_facet | Economic geology Environmental geology Radioactive waste thema EDItEUR::R Earth Sciences, Geography, Environment, Planning thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TQ Environmental science, engineering and technology |
| url | https://directory.doabooks.org/handle/20.500.12854/139688 |
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