ion exchange

The sorption of copper ions from a solution of copper(II) sulfate by the native form of natural clinoptilolite under mechanical stirring and under the action of ultrasonic radiation of different power and under different modes of process implementation (continuous and cyclic) was investigated. Based on the obtained results, it was concluded that ultrasonic vibrations significantly intensify the diffusion processes in the studied system.

In detail, this study analysed the kinetics of ammonium ion adsorption under dynamic conditions in the "clinoptilolite -ammonium ion" system. The work includes constructing a mathematical model of this process, which allows us to estimate and predict its essential characteristics. Calculations of mass transfer coefficients revealed their dependence on the intensity of medium mixing. A significant result is that ion exchange occurs in externally diffusion and intradiffusion regions.

The kinetics of adsorption of ammonium ions under dynamic conditions has been studied. A mathematical model of the process was built. The mass transfer coefficient was calculated depending on the intensity of the change of location. It was established that ion exchange occurs in external and internal diffusion regions. The rate constants of ion exchange for the region of external and internal diffusion were calculated.