The adsorption of phosphamidon on the surface of styrene supported zirconium (IV) tungstophosphate: a thermodynamic study

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 degrees C. As a result some thermodynamic parameters like Freundlich constants, thermodynamic equilibrium constant (K-0), standard free energy changes (Delta G(0)), standard enthalpy change (Delta H-0) and standard entropy changes (Delta S-0) have been evaluated. (C) 2000 Elsevier Science B.V. All rights reserved.