Abstract
Adsorption thermodynamics has been studied on the beads of hybrid inorganic ion exchanger: styrene supported zirconium (IV) tungstophosphate for a pesticide phosphamidon at 30, 45 and 60°C. As a result some thermodynamic parameters like Freundlich constants, thermodynamic equilibrium constant (
K
0), standard free energy changes (Δ
G
0), standard enthalpy change (Δ
H
0) and standard entropy changes (Δ
S
0) have been evaluated.