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Temperature effect on copper(II) ions sorption on zeolite NaX

The temperature impact on the copper(II) ions sorption kinetics on zeolite NaX was investigated. The experiments were conducted in a baffled glass batch reactor of nonstandard configuration (D/dT = 0.57, C/H = 0.10) at minimum impeller speed for complete suspension (NJS) by the straight blade turbine impeller. Several kinetic models were used to test the experimental rate data and to examine the controlling mechanism of the sorption process. The Ritchie model, and Mixed surface reaction and diffusion-controlled sorption kinetic model were used to analyze the obtained experimental kinetic data. The sorption capacity of copper(II) ions increases with the temperature. The kinetic analysis results showed that, with temperature increase, the copper(II) ions sorption rate on zeolite NaX increases too. The reaction investigated is second order reaction, and the process of copper(II) ions sorption on zeolite NaX, according to tau parameter and RMSE values at all conditions investigated, takes place in the kinetic domain.

temperature effect, sorption, copper(II) ions, zeolite NaX

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