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Influence of Operational Conditions on Retardation Parameters Measured by Diffusion Experiment in Compacted Bentonite

Published online by Cambridge University Press:  01 February 2011

Ishii Yasuo ,
Yoshimi Seida ,
Yukio Tachi  and
Hideki Yoshikawa
Ishii Yasuo
Affiliation:
[email protected], Japan Atomic Energy Agency, Geological Isolation Research and Development Directorate, Ibaraki, Japan
Yoshimi Seida
Affiliation:
[email protected], Japan Atomic Energy Agency, Geological Isolation Research and Development Directorate, Ibaraki, Japan
Yukio Tachi
Affiliation:
[email protected], Japan Atomic Energy Agency, Geological Isolation Research and Development Directorate, 4-33, Muramatsu, Tokai, Ibaraki, 319-1194, Japan, 81-29-282-1111, 81-29-282-1111
Hideki Yoshikawa
Affiliation:
[email protected], Japan Atomic Energy Agency, Geological Isolation Research and Development Directorate, 4-33, Muramatsu, Tokai, Ibaraki, 319-1194, Japan, 81-29-282-1111, 81-29-282-1111
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Abstract

Influence of operation factors in diffusion test of compacted bentonite (such as agitation of test solution in the reservoir, feed rate of the test solution and mass transfer resistance in the filter) on the diffusion data was examined by reservoir depletion (RD) test method using Cs+. The influence of these factors on the diffusion data was also analyzed based on the mathematical sorption-diffusion model which considered the feed of test solution and mass transfer resistance in the filter as well. The reservoir depletion data showed some remarkable influences of these operational conditions, especially in the system with low ionic strength. Change in mass transfer resistance at filter-compacted bentonite due to the operational conditions was found to be potential factor which disturb the diffusion data. The influence was reduced in the system with high ionic strength of solution.

Keywords

Csdiffusionwaste management
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1265: Symposium AA – Scientific Basis for Nuclear Waste Management XXXIV , 2010 , 1265-AA06-08
Copyright
Copyright © Materials Research Society 2010

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References

1 Yaroshchuk, A. E. and Loon, L. R. Van, Journal of Contaminant Hydrology, 97, 67 (2008).Google Scholar
2 Tachi, Y., Yotsuji, K., Seida, Y., and Yui, M., in Scientific Basis for Nuclear Waste Management XXXIII, edited by Burakov, B. E. and Aloy, A. S., (Mater. Res. Soc. Symp. Proc. 1193, Warrendale, PA, 2009), pp 545552 Google Scholar