Skip to main content

Effects of Smectite Illitization on Transport of Actinides Through Engineered Barriers of HLW Repositories

  • Joonhong Ahn (a1), S. Nagasaki (a2), S. Tanaka (a2) and A. Suzuki (a2)

Effect of smectite illitization on mass release rate from the bentonite-filled buffer of the engineered barriers is analyzed based on experimental results of sorption of americium and neptunium onto illite-smectite mixtures, and on mathematical models for smectite illitization by K+ diffusion, water flow through the engineered barriers, waste glass dissolution, and transport of americium and neptunium including solubility sharing with two major americium isotopes and moving boundary effect of the neptunium precipitation region. Numerical results for mass release rates of americium and neptunium as well as time-dependent pore velocity and glass dissolution rate are shown. Illitization effect is negligible with parameter values assumed here.

Hide All
1.Altaner S. P., Geochimica et Cosmochimica Acta 53, 923 (1989).
2.Felmy A. R., Rai D., and Fulton R. W., Radiochim. Acta 50, 193 (1990).
3.Pratopo M. I., Moriyama H., and Higashi K., Radiochim. Acta 51, 27 (1990).
4.Lieser K. H. and Hill R., Radiochim. Acta 56, 141 (1992).
5.Ticknor K. V. and Ruegger B., A Guide to the NEA’s Sorption Data Base, Version 2.0, OECD/NEA(1989)
6.Pratopo M. I., et al., J. Nucl. Technol. 30, 560 (1993).
7.Chambrd P. L., Kang C. H., and Pigford T. H., Trans. Am. Nuc. Soc. 52, 77 (1986).
8.Ohe T., Tsukamoto M., Kinoshita M., and Inoue T., Waste Management 11, 191 (1991)
9.Ahn J., et al., J. Atom. Energy Soc. Japan, to be appeared in 36 (1), (1994).
10.Ahn J. and Suzuki A., Nucl. Technol. 101, 79 (1993).
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

MRS Online Proceedings Library (OPL)
  • ISSN: -
  • EISSN: 1946-4274
  • URL: /core/journals/mrs-online-proceedings-library-archive
Please enter your name
Please enter a valid email address
Who would you like to send this to? *


Full text views

Total number of HTML views: 0
Total number of PDF views: 1 *
Loading metrics...

Abstract views

Total abstract views: 60 *
Loading metrics...

* Views captured on Cambridge Core between September 2016 - 20th November 2017. This data will be updated every 24 hours.