Evaluation of Eu(III) migration in compacted bentonite

被引：0
|
作者：
Xiangke Wang
Jinzhou Du
Zuyi Tao
Zunhe Li
机构：
[1] Institut für Nukleare Entsorgung,Forschungszentrum Karlsruhe
[2] College of Chemistry and Chemical Engineering Lanzhou University,Radiochemistry Laboratory
[3] Lanzhou University Lanzhou,Laboratory of Radiochemistry, College of Chemistry and Chemical Engineering
[4] Education Office Yinan County,undefined
来源：
Journal of Radioanalytical and Nuclear Chemistry | 2004年 / 260卷
关键词：
Radionuclide; Bentonite; Distribution Coefficient; Radioactive Waste; Water Velocity;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
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.
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页码：69 / 73
页数：4
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