Long-Term Behavior of Bituminized Waste: Modelling of Auto-Irradiation and Leaching

Abstract

During interim storage, the main evolution factor of the bituminized wastes is radiolysis under auto-irradiation, while in deep disposal conditions, after radioactive decrease, site resaturation with water, and container corrosion, the main factor of evolution is leaching by water.

This paper presents two models, designed to describe respectively radiolytic gas evacuation, and bituminized waste alteration under leaching.

The first model is based on the integration of simple descriptions of gas production by radiolysis, gas diffusive transport, bubble nucleation and ripening, and bubble transport under buoyancy and viscosity.

The second model is based on simple descriptions of water adsorption and solubilization at the surface, water diffusion into the matrix, water uptake by the most soluble salts, salt grain swelling and alteration of matrix waterproofing, diffusive transport of salts out of the waste.

This is a preview of subscription content, access via your institution.

References

  1. 1.

    I. Sobolev, A. Barinov, M. Ojovan, N. Ojovan, I. Startceva et Z. Golubeva: “Long-term behavior of bituminazed wastes”, proceedings of the International workshop on the safety and performance evaluation of bituminization process for radioactive wastes”, Prague (1999)

    Google Scholar 

  2. 2.

    A. Kagawa, M. Fukumoto et K. Kawamura: “Influence of chemical and radiolytic degradation of bitumen on disposal”, proceedings of the International workshop on the safety and performance evaluation of bituminization process for radioactive wastes”, Prague (1999)

    Google Scholar 

  3. 3.

    T. Yamaguchi, T. Amaya, A. Mukunoki et M. Fujiso: “Leaching test of bituminized wastes under geological conditions”, proceedings of the International workshop on the safety and performance evaluation of bituminization process for radioactive wastes”, Prague (1999)

    Google Scholar 

  4. 4.

    E. Valcke, A. Sneyers et P. Van Iseghem: “The final disposal of bituminised radioactive waste in a deep clay formation: a critical evaluation”, proceedings of the International workshop on the safety and performance evaluation of bituminization process for radioactive wastes”, Prague (1999)

    Google Scholar 

  5. 5.

    K. Brodersen: “Hygroscopic materials in bituminized waste: experiments and modelling”, proceedings of the International workshop on the safety and performance evaluation of bituminization process for radioactive wastes”, Prague (1999)

    Google Scholar 

  6. 6.

    S. Camaro, B. Simondi et P. Vistoli: “Long-Term behavior of bituminized waste”, proceedings of the International workshop on the safety and performance evaluation of bituminization process for radioactive wastes”, Prague (1999)

    Google Scholar 

  7. 7.

    D.C. Phillips, J.W. Hitchon, D.I. Johnson, J.R. Matthews: Journal of Nuclear Materials 125 (1984) p 202–218

    CAS  Article  Google Scholar 

  8. 8.

    I. Walczak, M.F. Libert, J. Lemaire: “Infrared Characterization of Oxidized Bitumen under γ- Rays”, to be publishe

  9. 9.

    M.F. Libert, F. Jacquot, M.A. Romero, B. Besnainou: “In vitro evaluation of microbial effects on bitumen waste form” in “Microbial Degradation Processes in Radioactive Waste Repository and in Nuclear Fuel Storage Areas”, Kluwer Academic Pub, I. Wolfram et al. (Eds), 275–283 (1997)

    Google Scholar 

  10. 10.

    I. Walczak, M.F. Libert, S. Camaro: ”Quantitative and qualitative analysis of hydrosoluble organic matter in bitumen leachates”, Agronomie - Agriculture et Environnement, to be published.

  11. 11.

    J.A. Marqusee, J. Ross: J.Chem.Phys. 79, 373 (1983), and references therein.

    CAS  Article  Google Scholar 

Download references

Author information

Affiliations

Authors

Corresponding author

Correspondence to P. Chaix.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Chaix, P., Camaro, S., Simondi, B. et al. Long-Term Behavior of Bituminized Waste: Modelling of Auto-Irradiation and Leaching. MRS Online Proceedings Library 663, 131 (2000). https://doi.org/10.1557/PROC-663-131

Download citation