Introduction:

The solid material obtained from a basic hydrothermal attack on natural zeolite makes it possible to obtain an adsorbent for the Pb2+ ion (ac).

Objective:

To determine the kinetic-thermodynamic parameters that governs the adsorption of lead (II) ions in an artificial zeolite.

Materials and Methods:

Lead (II) solutions concentrations are determined by Atomic Absorption Spectroscopy. They are used for kinetic and diffusive studies at temperatures of 298 K and 323 K.

Results and Discussion:

The process activation energy is 15.70 kJ/mol. The diffusion coefficients are low. Given the values of free energy, entropy and enthalpy, the process occurs at any temperature.

Conclusions:

The kinetic mechanisms respond to pseudo-first-order adsorption and diffusion prevails in the liquid film.

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