物理化学学报 >> 1989, Vol. 5 >> Issue (01): 81-86.doi: 10.3866/PKU.WHXB19890117

研究论文 上一篇    下一篇

离子交换吸附平衡及其动力学兼论海水提铀机理

艾宏韬;陈松;陶祖贻;林子煌   

  1. 郑州粮食学院;国家海洋局三所;兰州大学;北京大学附中
  • 收稿日期:1987-07-27 修回日期:1988-05-16 发布日期:1989-02-15
  • 通讯作者: 艾宏韬

Theory of Kinetics and Equilibrium of Ion Exchange-Adsorption and Mechanism of Extracting Uranium From Sea-Water with Titanic Gel

Ai Hong-Tao;Chen Song;Tao Zu-Yi;Lin Zi-Huang   

  1. Zhengzhou Food Institute; National Bureau of Oceanography; Lanzhou University; The Attached Middle School of Beijing University
  • Received:1987-07-27 Revised:1988-05-16 Published:1989-02-15
  • Contact: Ai Hong-Tao

摘要: 本文通过质量作用定律导出的离子交换吸附等温式, 可概括经验的、半经验的Gapon公式、Sips公式、Langmuir公式和Freundlich公式。采用交换吸附是动力学的控制步骤, 可导出交换动力学公式。该式得到海水提铀实验的验证; 且可解释用于证明“颗粒内扩散或液膜扩散机理”的实验数据; 也可解释“颗粒内扩散和液膜扩散联合控制”的实验数据。此外, 本文还讨论了钛胶海水提铀的机理, 为平衡吸铀量的计算提供了理论和方法。

Abstract: An isothermal equation for ion exchange-adsorption is derived by mass action law. The equation can be used to sum up empirical and semiempirical formnlas of exchangeadsorption, such as Gapon Equation, Sips Formula, Langmuir Equation and Freundlich Formula.
In this paper, by adopting the ion exchange reaction to act as the determining step of the ion exchange adsorption kinetics, an exchange-adsorption kinetics equation is derived. It is verified by the results of a series of experiments in which uranium is extracted form enriched sea-water and natural sea-water with hydrous titanium oxide (titanic gel). This equation can be used to explain not only the results of tests which have been applied to prove fast....