INFLUENCE OF TEMPERATURE ON EQUILIBRIUM AND DYNAMIC EXCHANGE CHARACTERISTICS OF DIFFERENCE-CHARGED IONS ON IONITES

The equilibrium and dynamic properties of the sulphonic-acidic, phosphonic-acid and carboxyl cationites, iminodiacetate, vinylpyridinecarboxyl polyampholytes and vinylpyridine anionite have been investigated for a purpose of searching the ion-exchange systems with maximal influence of the temperature on the physical-chemical characteristics of the ionites and analysis of the possibilities for use of the temperature effects for optimization and increase of the effective procedures on the cleaning and separation of the substance mixtures. It has been discovered that at exchange of the alkali metal ions for ions of the alkali-earth and transient metals the temperature increase increases the selectivity of all the types of the cationites and influences wery weakly on the selectivity of the polyampholytes and sorption of the nickel by an anionite. The role of the temperature in the ion-exchange separation and cleaning process of the alkali metal salt solutions from two-charge ions of the alkali-earth and transient metals has been analysed.Available from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio