Gas-driven radionuclide transport in undisturbed and disturbed Boom Clay

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Gas-driven radionuclide transport in undisturbed and disturbed Boom Clay. / Jacops, Elke; Maes, Tom; Maes, Norbert; Volckaert, Geert; Weetjens, Eef; Sillen, Xavier.

In: Gas Generation and Migration in Deep Geological Radioactive Waste Repositories. Geological Society, London, Special Publications, Vol. 415, 03.2015, p. 9-17.

Research output: Contribution to journalArticlepeer-review

Harvard

Jacops, E, Maes, T, Maes, N, Volckaert, G, Weetjens, E & Sillen, X 2015, 'Gas-driven radionuclide transport in undisturbed and disturbed Boom Clay', Gas Generation and Migration in Deep Geological Radioactive Waste Repositories. Geological Society, London, Special Publications, vol. 415, pp. 9-17. https://doi.org/10.1144/SP415.10

APA

Jacops, E., Maes, T., Maes, N., Volckaert, G., Weetjens, E., & Sillen, X. (2015). Gas-driven radionuclide transport in undisturbed and disturbed Boom Clay. Gas Generation and Migration in Deep Geological Radioactive Waste Repositories. Geological Society, London, Special Publications, 415, 9-17. https://doi.org/10.1144/SP415.10

Vancouver

Jacops E, Maes T, Maes N, Volckaert G, Weetjens E, Sillen X. Gas-driven radionuclide transport in undisturbed and disturbed Boom Clay. Gas Generation and Migration in Deep Geological Radioactive Waste Repositories. Geological Society, London, Special Publications. 2015 Mar;415:9-17. https://doi.org/10.1144/SP415.10

Author

Jacops, Elke ; Maes, Tom ; Maes, Norbert ; Volckaert, Geert ; Weetjens, Eef ; Sillen, Xavier. / Gas-driven radionuclide transport in undisturbed and disturbed Boom Clay. In: Gas Generation and Migration in Deep Geological Radioactive Waste Repositories. Geological Society, London, Special Publications. 2015 ; Vol. 415. pp. 9-17.

Bibtex - Download

@article{10b8d105b3e148a581442b8eddee5ec4,
title = "Gas-driven radionuclide transport in undisturbed and disturbed Boom Clay",
abstract = "In deep geological repositories for the disposal of radioactive waste, gas can be generated by different mechanisms including anaerobic corrosion, radiolysis and microbial degradation. If the gas generation rate is larger than the capacity for the diffusive transport of the dissolved gas, a free gas phase will be formed, eventually leading to gas-breakthrough events. Depending on the timing of gas breakthrough, dissolved radionuclides and contaminants could be driven out of the clay faster than the normally expected diffusive transport. A column experiment was designed in which a water-saturated clay core is placed directly on top of a thin BoomClay core that has been previously saturated with a tracer solution (0.01mol l21NaI). A helium gas pressure is applied and stepwise increased. Upon gas breakthrough, the water on top of the column is expelled and analysed for its iodide content. The measured concentration iodide is linked to the amount of NaI-saturated pore water that was displaced. It can be concluded that the transport of radionuclides and contaminants because of a gas-breakthrough event is possible but appears to be very limited. The volume of water displaced is very low (three orders of magnitude) compared to the volume of gas transported upon breakthrough.",
keywords = "Boom Clay, gas diffusion, gas migration",
author = "Elke Jacops and Tom Maes and Norbert Maes and Geert Volckaert and Eef Weetjens and Xavier Sillen",
note = "Score = 10; International Symposium and workshop on Gas generation and migration: {"}Implications for the performance of geological respositories for radioactive waste disposal{"} ; Conference date: 02-02-2013 Through 05-02-2013",
year = "2015",
month = mar,
doi = "10.1144/SP415.10",
language = "English",
volume = "415",
pages = "9--17",
journal = "Gas Generation and Migration in Deep Geological Radioactive Waste Repositories. Geological Society, London, Special Publications",

}

RIS - Download

TY - JOUR

T1 - Gas-driven radionuclide transport in undisturbed and disturbed Boom Clay

AU - Jacops, Elke

AU - Maes, Tom

AU - Maes, Norbert

AU - Volckaert, Geert

AU - Weetjens, Eef

AU - Sillen, Xavier

N1 - Score = 10

PY - 2015/3

Y1 - 2015/3

N2 - In deep geological repositories for the disposal of radioactive waste, gas can be generated by different mechanisms including anaerobic corrosion, radiolysis and microbial degradation. If the gas generation rate is larger than the capacity for the diffusive transport of the dissolved gas, a free gas phase will be formed, eventually leading to gas-breakthrough events. Depending on the timing of gas breakthrough, dissolved radionuclides and contaminants could be driven out of the clay faster than the normally expected diffusive transport. A column experiment was designed in which a water-saturated clay core is placed directly on top of a thin BoomClay core that has been previously saturated with a tracer solution (0.01mol l21NaI). A helium gas pressure is applied and stepwise increased. Upon gas breakthrough, the water on top of the column is expelled and analysed for its iodide content. The measured concentration iodide is linked to the amount of NaI-saturated pore water that was displaced. It can be concluded that the transport of radionuclides and contaminants because of a gas-breakthrough event is possible but appears to be very limited. The volume of water displaced is very low (three orders of magnitude) compared to the volume of gas transported upon breakthrough.

AB - In deep geological repositories for the disposal of radioactive waste, gas can be generated by different mechanisms including anaerobic corrosion, radiolysis and microbial degradation. If the gas generation rate is larger than the capacity for the diffusive transport of the dissolved gas, a free gas phase will be formed, eventually leading to gas-breakthrough events. Depending on the timing of gas breakthrough, dissolved radionuclides and contaminants could be driven out of the clay faster than the normally expected diffusive transport. A column experiment was designed in which a water-saturated clay core is placed directly on top of a thin BoomClay core that has been previously saturated with a tracer solution (0.01mol l21NaI). A helium gas pressure is applied and stepwise increased. Upon gas breakthrough, the water on top of the column is expelled and analysed for its iodide content. The measured concentration iodide is linked to the amount of NaI-saturated pore water that was displaced. It can be concluded that the transport of radionuclides and contaminants because of a gas-breakthrough event is possible but appears to be very limited. The volume of water displaced is very low (three orders of magnitude) compared to the volume of gas transported upon breakthrough.

KW - Boom Clay

KW - gas diffusion

KW - gas migration

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_139600

UR - http://knowledgecentre.sckcen.be/so2/bibref/12657

U2 - 10.1144/SP415.10

DO - 10.1144/SP415.10

M3 - Article

VL - 415

SP - 9

EP - 17

JO - Gas Generation and Migration in Deep Geological Radioactive Waste Repositories. Geological Society, London, Special Publications

JF - Gas Generation and Migration in Deep Geological Radioactive Waste Repositories. Geological Society, London, Special Publications

T2 - International Symposium and workshop on Gas generation and migration: "Implications for the performance of geological respositories for radioactive waste disposal"

Y2 - 2 February 2013 through 5 February 2013

ER -

ID: 307644