Sorption and Transport Behavior of {sup 137}Cs, {sup 90}Sr, and {sup 99}Tc on Geological Media in Radioactive Waste Repository, South Korea - 16112
- Pohang Universtiy of Science and Technology (Korea, Republic of)
Sorption experiments and a behavior investigation for the radionuclides {sup 137}Cs, {sup 90}Sr, and {sup 99}Tc were conducted using groundwater and solid materials (mud-stone and sandstone) sampled from the Wolsong low- and intermediate-level radioactive waste repository at Gyeongju, Korea. After experiments involving batch sorption, diffusion, and a flow-through column, distribution coefficients (K{sub d}) of the radionuclides were obtained, and sorption properties for each radionuclide were analyzed. Increasing K{sub d} values were observed in the sequence {sup 137}Cs, {sup 90}Sr, and {sup 99}Tc regardless of the geological media tested. For all sorbing radionuclides, K{sub d} values for the mud-stone were observed to be higher than those for sandstone regardless of the groundwater. These higher K{sub d} values are the result of higher levels of total organic carbon in the mud-stone than were present in the sandstone. In addition, the chlorite, kaolinite, and montmorillonite contents in the mud-stone also were higher than in the sandstone. The mineralogical composition of the solid materials was observed to be important in the sorption of sorbing radionuclides. (authors)
- Research Organization:
- WM Symposia, Inc., PO Box 27646, 85285-7646 Tempe, AZ (United States)
- OSTI ID:
- 22838003
- Report Number(s):
- INIS-US--19-WM-16112
- Country of Publication:
- United States
- Language:
- English
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