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Absorption Study of the Tc(IV) on Rocks and Minerals Under Simulated Geological Conditions

Published online by Cambridge University Press:  15 February 2011

Takayuki Amaya ,
Wataru Kobayashi  and
Kazunori Suzuki
Takayuki Amaya
Affiliation:
JGC Corporation, Oaraimachi, Ibaraki-Pref., 311–13Japan
Wataru Kobayashi
Affiliation:
JGC Corporation, Oaraimachi, Ibaraki-Pref., 311–13Japan
Kazunori Suzuki
Affiliation:
JGC Corporation, Oaraimachi, Ibaraki-Pref., 311–13Japan
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Abstract

The absorption of the technetium on rocks and minerals have been studied by using freshly quarried rocks to provide reducing conditions, without the addition of reductive reagents. The initial 99Tc concentration in this study was about 1x10-8 mol/1 (0.62 Bq/ml). Technetium was not absorbed on tuff or granite under oxidizing conditions, but higher Kd values of Tc were obtained for granite under reducing conditions. The Tc absorbed on granite was not desorbed under reducing condition. This indicates the absorption reaction is irreversible.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 353: Symposium – Scientific Basis for Nuclear Waste Management XVIII , 1994 , 1005
Copyright
Copyright © Materials Research Society 1995

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References

REFERENCES

1. Byegard, J., Albinsson, Y., Skarnemark, G and Skalberg, M., “Field and Laboratory Studies of the Reduction and Sorption of Technetium(VII)”, Radio chimica Acta 58/59, 239–244 (1992).Google Scholar
2. Bruhl, H., Pekdeger, A. & Winkler, A., “Influence Of Micro Environments And Microorganisms On The Transport Properties Of Redox-Sensitive Elements (E.G Technetium)”, Mat. Res. Soc. Symp. Proc. Vol. 212 pp 593–599, 1991 Google Scholar
3. Meyer, R.E.,Arnold, W.D., Case, F.I., “Valence Effects On Solubility And Sorption The Solubility of Tc(IV) Oxides”, NUREG/CR-4309, 1986 Google Scholar
4. Palmer, D.A., Meyer, R.E., “Adsorption Of Technetium On Selected Inorganic Ion-Exchange Materials And On A Range Of Naturally Occurring Minerals Under Oxic Conditions”, J. inorg. Chem. Vol.43, No.11, pp 2979–2984, 1981 Google Scholar
5. Lieser, K.H.. Bauscher, Ch., “Technetium in the Hydrosphere and in the Geosphere”, Radiochimica Acta 42, 205–213 (1987)Google Scholar
6. Kumata, M., Vandergraaf, T.T., “Technetium Behavior Under Deep Geological Conditions”, Radioactive Waste Management and the Nuclear Fuel Cycle, Vol. 17 (2), pp. 107–117, 1993 Google Scholar
7. Vandergraaf, T.T.,Ticknor, K.V., and George, I.M., “Reactions Between Technetium in Solution and Iron-Containing Minerals Under Oxic and Anoxic Conditions”, American Chemical Society, 1984 Google Scholar
8. Eriksen, T.E.. Ndalamba, P., Cui, D., et al, “Solubility of the redox-sensitive radionuclides 99Tc and 237Np under reducing conditions in neutral to alkaline solutions. Effect of carbonate”, SKB Technical Report 93–18, 1993 Google Scholar
9. Guppy, R M, Atkinson, A & Valentine, T M, “Studies Of The Solubility Of Technetium Under A Range Of Redox Conditions”, DOE/RW/89/102Google Scholar
10. Pilkington, N J and Wilkins, J D, “Experimental Measurements Of The Solubility Of Technetium Under Near-Field Conditions”, Ukaea Harwell Laboratory NSS/R120Google Scholar