Roumaissa BEN MOUSSA,Amira TABBAN, Rayen BEN MOUSSA2025-02-272025-02-272023-06-23http://dspace.univ-skikda.dz:4000/handle/123456789/4131This work concerns the study of the adsorption of Violet Cristal et Congo Red sur dye on an adsorbent (clay Bentonite). The influences of the initial concentration, mass, and the temperature of the solution of the solution were studied in order to optimize adsorption. The optimal value of the best experimental adsorption for the isotherm it was the Freundlich model. The interaction of these materials with VC are subjected to kinetic modeling the pseudo- second order model was the best for kinetic modeling and for CR kinetic modeling the pseudo- premier orderfrThesis