Investigation of 3H, 99Tc, and 90Sr transport in fractured rock and the effects of fracture-filling/coating material at LILW disposal facility
| Autor: | Sangsoo Han, Won-Seok Kim, Wooyong Um, Jinmo Ahn |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Geological Phenomena
Environmental Engineering Materials science 010504 meteorology & atmospheric sciences Diffusion Fracture (mineralogy) 010501 environmental sciences engineering.material 01 natural sciences complex mixtures Radionuclide transport Article Adsorption Coating Geochemistry and Petrology Vadose zone Republic of Korea Water Movements Environmental Chemistry 0105 earth and related environmental sciences General Environmental Science Water Science and Technology Unsaturated zone Radioisotopes Radionuclide Metallurgy Repository Sorption General Medicine Models Theoretical Refuse Disposal Radioactive Waste engineering Zeolites Fractured rock Groundwater |
| Zdroj: | Environmental Geochemistry and Health |
| ISSN: | 1573-2983 0269-4042 |
| Popis: | Batch adsorption, batch diffusion, and flow-through column experiments were conducted using groundwater and fractured rock collected in unsaturated zone to increase our understanding of sorption and transport behavior of radionuclides. Increasing Kd values were observed in the sequence 90Sr, 99Tc, and 3H regardless of the geological media tested. For all sorbing radionuclides, Kd values for the fracture-filling/coating material were observed to be higher than those for without fracture-filling/coating material regardless of the groundwater. These higher Kd values are the result of zeolite mineral in filling/coating material of fractured rock. The batch diffusion and flow-through column experiments were also conducted using the same fractured rock sample, and the results of diffusion and column experiments showed similar trend of radionuclide sorption and transport to sorption experiment. In this study, sorption Kd of radionuclide was determined and used to increase our understanding of radionuclide retardation through fracture-filling/coating materials. |
| Databáze: | OpenAIRE |
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