| 蒙脱石吸附模拟核素Sr、Cs的性能研究 |
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| 引用本文： | 杨威,彭同江.蒙脱石吸附模拟核素Sr、Cs的性能研究[J].矿物学报,2010,30(1). |
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| 作者姓名： | 杨威 彭同江 |
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| 作者单位： | 1. 西南科技大学理学院,四川,绵阳,621010;西南科技大学矿物材料及应用研究所,四川,绵阳,621010
2. 西南科技大学矿物材料及应用研究所,四川,绵阳,621010 |
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| 基金项目： | 西南科技大学国防重点学科实验室重点培养项目(07XJGZB04) |
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| 摘 要： | 基于蒙脱石具有良好的阳离子交换性能,采用静态吸附法,对阜新钙基蒙脱石吸附模拟核素Sr、Cs的吸附条件和吸附行为进行了研究。结果表明:蒙脱石样品对Sr2+、Cs+的饱和吸附量分别为0.271mmol/g和0.780mmol/g,在较大的pH值范围(4～11)内具有良好的吸附稳定性;蒙脱石对Sr2+、Cs+的吸附类型以阳离子交换吸附为主,符合Langmuir和Freundlich模型,但与Langmuir吻合更好,相关系数分别达到0.99924和0.99995。本实验研究对于处理低浓度的含Sr、Cs放射性废液具有重要的意义。
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| 关 键 词： | 蒙脱石 阳离子交换 模拟核素Sr、Cs 吸附行为 |
Adsorption Properties of Simulative Radionuclides Sr and Cs by Montmorillonite |
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| YANG Wei,PENG Tong-jiang.Adsorption Properties of Simulative Radionuclides Sr and Cs by Montmorillonite[J].Acta Mineralogica Sinica,2010,30(1). |
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| Authors: | YANG Wei PENG Tong-jiang |
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| Institution: | 1.Science College of Southwest University of Science and Technology/a>;Mianyang 621010/a>;China/a>;2.Institute of Mineral Materials and Application/a>;Southwest University of Science and Technology/a>;China |
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| Abstract: | Based on the good cation exchange property of montmorillonite,the adsorption of simulated radionuclides Sr and Cs was studied by static adsorption method,adsorption behaviors and the effect of experimental conditions.The results show that the saturated adsorption capacity of Ca-montmorillonite sample to the simulated radionuclides Sr and Cs are 0.271mmol/g and 0.708mmol/g respectively,and the suitable pH values range from 4 to 11.Cation exchange is the main type of adsorption.The mechanism of the adsorption... |
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| Keywords: | montmorillonite cation exchange simulated radionuclides Sr and Cs adsorption behavior |
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