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Categorization of Cement Hydrates by Radionuclide Sorption Mechanism

Published online by Cambridge University Press:  21 March 2011

K. Noshita ,
T. Nishi ,
T. Yoshida ,
H. Fujihara ,
N. Saito  and
S. Tanaka
K. Noshita
Affiliation:
Hitachi Ltd., 7-2-1 Omika, Hitachi, Ibaraki 319-1221, Japan
T. Nishi
Affiliation:
Hitachi Ltd., 7-2-1 Omika, Hitachi, Ibaraki 319-1221, Japan
T. Yoshida
Affiliation:
Hitachi Ltd., 7-2-1 Omika, Hitachi, Ibaraki 319-1221, Japan
H. Fujihara
Affiliation:
Tokyo Electric Company, 1-3 Uchisaiwai, Chiyoda, Tokyo 100-0011, Japan
N. Saito
Affiliation:
Tokyo Electric Company, 1-3 Uchisaiwai, Chiyoda, Tokyo 100-0011, Japan
S. Tanaka
Affiliation:
Tokyo University, 7-3-1 Hongo, Bunkyo, Tokyo, 113-0033, Japan
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Abstract

A categorization of cement components was attempted from the viewpoints of their chemical constituents and sorption behaviors. In this study, we assumed that the cement components are categorized into four groups, calcium silicate compounds, hydroxides, calcium aluminate compounds, and others. The sorption behaviors were compared among the four groups by batch sorption experiments carried out for 12 kinds of cement components using the radionuclides cesium, iodine, inorganic carbon, and nickel as different chemical species. The characteristic sorption trends were obtained in each group. We found that the sorption mechanism is closely related to the chemical constituents and surface species. Categorization of these cement of components will contribute to the understanding of sorption mechanisms.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 663: Symposium – Scientific Basis for Nuclear Waste management XXIV , 2000 , 115
Copyright
Copyright © Materials Research Society 2001

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References

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