In this work, our target is to study the basic dye Crystal
Violet adsorption on pyrophyllite. For this reason, various
experimental parameters were analyzed: amount of adsorbent,
initial concentration while coloring, contact time, pH solution
and temperature. The adsorption capacities were given using
the Langmuir and Freundlich isotherms. While the adsorption
kinetics of the Crystal Violet was studied using the intraparticle
diffusion equations, the pseudo-first order and the pseudosecond
order models.