Evaluation of Eu(III) migration in compacted bentonite
| Autor: | Zuyi Tao, Jinzhou Du, Xiangke Wang, Zunhe Li |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Materials science
Health Toxicology and Mutagenesis Public Health Environmental and Occupational Health Analytical chemistry chemistry.chemical_element Mineralogy Water velocity Dispersion coefficient Pollution Analytical Chemistry Partition coefficient Pore water pressure Nuclear Energy and Engineering chemistry Bentonite Radiology Nuclear Medicine and imaging Europium Spectroscopy |
| Zdroj: | Journal of Radioanalytical and Nuclear Chemistry. 260:69-73 |
| ISSN: | 0236-5731 |
| DOI: | 10.1023/b:jrnc.0000027063.55710.8a |
| Popis: | The distribution coefficient of Eu(III) derived from batch experiments is used to predict the migration of Eu(III) in compacted bentonite with time. The effect of the dispersion coefficient and the pore water velocity on the migration of Eu(III) are also taken into account. It was found that the dispersion coefficient does not influence the migration, while the variation of the distribution coefficient and the water velocity affected the behavior of Eu(III) in compacted bentonite. Most of the europium is retained in the first several meters. So, 30 m of backfill bentonite may be sufficient to prevent the release of Eu(III) to the environment. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|