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Sorption Behavior of Radium and Actinium on Soils

Published online by Cambridge University Press:  21 March 2011

Yoshiaki Sakamoto ,
Shinichi Takebe ,
Hiromichi Ogawa ,
Susumu Muraoka ,
Tomoaki Ishii ,
Satoshi Inagawa  and
Yasuyoshi Gunji
Yoshiaki Sakamoto
Affiliation:
Japan Atomic Energy Research Institute, Department of Fuel Cycle Safety, Disposal Safety Laboratory, Tokai-mura, Naka-gun, Ibaraki-ken, 319-1195, Japan Email: sakamoto@sparclt.tokai.jaeri.go.jp
Shinichi Takebe
Affiliation:
Japan Atomic Energy Research Institute, Department of Fuel Cycle Safety, Disposal Safety Laboratory, Tokai-mura, Naka-gun, Ibaraki-ken, 319-1195, Japan
Hiromichi Ogawa
Affiliation:
Japan Atomic Energy Research Institute, Department of Fuel Cycle Safety, Disposal Safety Laboratory, Tokai-mura, Naka-gun, Ibaraki-ken, 319-1195, Japan
Susumu Muraoka
Affiliation:
Japan Atomic Energy Research Institute, Department of Fuel Cycle Safety, Disposal Safety Laboratory, Tokai-mura, Naka-gun, Ibaraki-ken, 319-1195, Japan
Tomoaki Ishii
Affiliation:
Nuclear Fuel Industries, LTD., Technical Development Department, Tokai-mura, Naka-gun, Ibaraki-ken, 319-1196, Japan
Satoshi Inagawa
Affiliation:
Nuclear Fuel Industries, LTD., Technical Development Department, Tokai-mura, Naka-gun, Ibaraki-ken, 319-1196, Japan
Yasuyoshi Gunji
Affiliation:
Nuclear Fuel Industries, LTD., Technical Development Department, Tokai-mura, Naka-gun, Ibaraki-ken, 319-1196, Japan
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Abstract

Distribution coefficients of 226Ra and 227Ac on soils and tuff have been obtained by a batch method. The distribution coefficients of Ra on loam, two kinds of sand and tuff were 28m3/kg, 0.45m3/kg, 0.19m3/kg and 1.9m3/kg, respectively. A linear relationship between the distribution coefficients of Ra on each soil and Cation Exchange Capacity(CEC) of each soil was obtained to suggest cation exchange sorption reaction of Ra2+ on soil surface. Sorption-migration behavior of Ra in sand column has been studied. Most of Ra remained in the column after passing of 5,000 pore volume of the column, showing several times the distribution coefficients of Ra than that by the batch method. The distribution coefficients of 227Ac on the soil samples were in the range from 1m3/kg to 10m3/kg.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 663: Symposium – Scientific Basis for Nuclear Waste management XXIV , 2000 , 1207
Copyright
Copyright © Materials Research Society 2001

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References

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