| 水相环境对239Pu在高庙子膨润土中吸附行为的影响 |
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| 引用本文： | 宿吉龙,庹先国,冷阳春,李平川,岳萍,邓晓颖. 水相环境对239Pu在高庙子膨润土中吸附行为的影响[J]. 核化学与放射化学, 2013, 35(4): 247-251. DOI: 10.7538/hhxyfshx.2013.35.04.0247 |
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| 作者姓名： | 宿吉龙 庹先国 冷阳春 李平川 岳萍 邓晓颖 |
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| 作者单位： | 1.成都理工大学 核技术与自动化工程学院，四川 成都610059；2.成都理工大学 地质灾害防治与地质环境保护国家重点实验室，四川 成都610059；3.西南科技大学 核废物与环境安全国防重点学科实验室，四川 绵阳621010 |
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| 基金项目： | 国家杰出青年科学基金资助项目，四川省青年科技创新研究团资助项目 |
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| 摘 要： | 以高庙子膨润土作为吸附介质，通过静态吸附实验，研究了高庙子膨润土在不同水相环境中对核素239Pu的吸附行为。探讨了接触时间、水相pH值、离子种类以及离子浓度等因素对吸附行为的影响。研究结果表明：高庙子膨润土对钚具有很强的吸附能力，吸附率达到99%以上，且吸附速率较快，4 d即可达到吸附平衡。随着水相pH值增大，膨润土对钚的吸附能力逐渐增强。水相中CO32-、Fe3+和Ca2+对钚吸附有较强抑制作用，并且当离子浓度小于0.02mol/L时，随着浓度的增大，分配系数Kd值逐渐减小；当离子浓度大于0.02mol/L时，分配系数Kd值基本趋于稳定。
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| 关 键 词： | 高庙子膨润土 吸附 239Pu 分配系数Kd |
Influence of Aqueous Environment on the Adsorption of 239Pu on GMZ Bentonite |
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| SU Ji-long , TUO Xian-guo , LENG Yang-chun , LI Ping-chuan , YUE Ping , DENG Xiao-ying. Influence of Aqueous Environment on the Adsorption of 239Pu on GMZ Bentonite[J]. Journal of Nuclear and Radiochemistry, 2013, 35(4): 247-251. DOI: 10.7538/hhxyfshx.2013.35.04.0247 |
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| Authors: | SU Ji-long TUO Xian-guo LENG Yang-chun LI Ping-chuan YUE Ping DENG Xiao-ying |
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| Affiliation: | 1.College of Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu 610059, China; 2.State Key Laboratory of Geohazard Prevention and Geoenvironment Protection,Chengdu University of Technology, Chengdu 610059, China; 3.Nuclear Waste and Environmental Safety Defense Key Disciplines Laboratory, Southwest University of Science and Technology, Mianyang 621010, China |
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| Abstract: | The adsorption of 239Pu on Gaomiaozi(GMZ) bentonite was studied in different ionic environment by the static adsorption experiment. The influence of the contact time, pH, the different kinds of ions and ionic concentration on the adsorption behavior was also studied. The experimental results show the adsorption ability of 239Pu on GMZ bentonite is good, and the adsorption rate is fast, four days it can achieve adsorption equilibrium. The adsorption capacity of bentonite to 239Pu increases with increasing of pH value in water phase. The adsorption of 239Pu on GMZ bentonite is strongly hindered by CO32-, Fe3+ and Ca2+. The Kd value increases with the concentration increasing while ionic concentration less than 0.02 mol/L. The Kd value is not affected by ionic concentration while ionic concentration more than 0.02 mol/L. |
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| Keywords: | GMZ bentonite adsorption behavior 239Pu Kd |
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