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论文摘要

绿泥石对U(VI)的吸附特征研究

Study on sorption of chlorite to uranium(VI)

作者:黄俊文(西南科技大学国防科技学院);冷阳春(西南科技大学国防科技学院);宋怡婷(西南科技大学国防科技学院);张虹(西南科技大学国防科技学院);庹先国(四川理工学院化学与环境工程学院)

Author:HUANG Jun-Wen(College of National Defense Science and Technology, Southwest University of Science and Technology);LENG Yang-Chun(College of National Defense Science and Technology, Southwest University of Science and Technology);SONG Yi-Ting(College of National Defense Science and Technology, Southwest University of Science and Technology);ZHANG Hong(College of National Defense Science and Technology, Southwest University of Science and Technology);TUO Xian-guo(College of Chemistry and Environmental Engineering, Sichuan Institute of Technology)

收稿日期:2017-10-30          年卷(期)页码:2019,56(2):313-317

期刊名称:四川大学学报: 自然科学版

Journal Name:Journal of Sichuan University (Natural Science Edition)

关键字:绿泥石; U(VI); 吸附; 动力学

Key words:Chlorite; Uranium(VI); Adsorption; Kinetics

基金项目:国家自然科学基金,其它

中文摘要

以绿泥石为研究对象, 利用静态吸附的方法, 探究了吸附时间、U(VI)初始浓度、固液比、pH值、离子类型等对U (VI)吸附效果的影响,并讨论了U(VI)在绿泥石上的吸附动力学行为. 结果表明:准二级动力学模型可以用来描述U(VI)在绿泥石上的吸附; 绿泥石对U (VI)的吸附20 h即趋于稳定; 最佳吸附固液附比为1∶150; 最佳吸附初始浓度为20 ug?mL-1; 当pH为7时, 吸附效果最好. 过酸或过碱都会影响绿泥石对U(VI)的吸附; 溶液中Ca2+、HCO3-、CO32-、SO42-、Mg2+对U (VI)的吸附有较强的抑制作用.

英文摘要

In this paper, employing the static adsorption methods, we explored the effects of adsorption time, U(VI) initial concentration, solid liquid ratio, pH value, ion type, temperature and other factors on the adsorption of U(VI) by chlorite. The adsorption kinetics of U(VI) in chlorite is discussed. The results show that the quasi-secondary dynamics model can be used to describe the adsorption of uranium on chlorite; The adsorption rate of chlorite on U(VI) is relatively fast, and the adsorption of 20h is stable; The optimal solid-liquid adsorption ratio is 1:150; The optimal initial concentration is 20ug?mL-1; The best adsorption effect can be obtained when pH is 7. The acid or alkaloid will affect the adsorption of chlorite on U(VI); Ca2+, HCO3-, CO32-, SO42-, Mg2+in the solution have inhibitory effect on the adsorption of U(VI).

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