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毛细管法研究pH值对Eu(Ⅲ)在压实皂土中的扩散和吸附影响

章毛连1,2,王祥科2,陈磊3   

  1. (1. 安徽科技学院 理学院, 安徽省 凤阳 233100; 2. 中国科学院等离子体物理研究所, 合肥 230031; 3. 山东理工大学化学系, 山东省 淄博 255045)
  • 收稿日期:2004-11-22 修回日期:1900-01-01 出版日期:2005-09-26 发布日期:2005-09-26
  • 通讯作者: 章毛连

Effect of pH Value on the Diffusion and Sorption of Eu(Ⅲ) in Compacted Bentonite Studied by Capillary Method

ZHANG Mao-lian1,2,WANG Xiang-ke2, ,CHEN Lei3   

  1. (1. College of Science, Anhui University of Science and Technology, Fengyang 233100, Anhui Province, China; 2. Institute of Plasma Physics, Chinese Academy of Science, Hefei 230031, China; 3. Department of Chemistry, Shandong University of Technology, Zibo 255045, Shandong Province, China)
  • Received:2004-11-22 Revised:1900-01-01 Online:2005-09-26 Published:2005-09-26
  • Contact: ZHANG Mao-lian

摘要: 利用毛细管法研究pH值对Eu(Ⅲ)在压实皂土中的吸附和扩散影响. 结果表明, Eu(Ⅲ)在压实皂土中的扩散随pH值升高而减小, 吸附量随pH值升高而增加. 皂土密度对放射性核素的吸附和迁移起重要作用. 实验结果与Fick定律理论计算值一致.

关键词: 毛细管法, 皂土, Eu(Ⅲ), 扩散, 吸附

Abstract: Effects of pH value on the sorption and diffusion of Eu(Ⅲ) in compacted benton ite were studied with the capillary method. The results suggest that diffusion of Eu(Ⅲ) in compacted bentonite decreases with increasing pH value. The sorption of Eu(Ⅲ) increases with increasing pH value. The intensity of the compacted bentonite, i.e., the interlaminary space of compacted bentonite, significantly contributes to the diffusion and sorption of radionuclides in compacted bentonite. The results fit the Ficks second law very well.

Key words: capillary method, bentonite, Eu(Ⅲ), diffusion, sorption

中图分类号: 

  • O614.33+8