The kinetics of sorption of basic dyes from aqueous solution by sphagnum moss peat

[[abstract]]The kinetics of sorption of three basic dyes, namely, Chrysoidine (B02), Astrazon Blue (BB3) and Astrazone Blue (BB69) onto sphagnum moss peat have been investigated. The study focuses on the application of three sorption kinetic models for predicting the uptake of basic dyes. The sorption behaviour is found to be second order, based on the assumption of a pseudo-second order mechanism. The rate constant of sorption, the equilibrium capacity and initial sorption rate with the effect of various peat doses and initial dye concentrations have also been predicted. On a etudie les cinetiques de sorption de trois teintures de base, a savoir Chrysoidine (BO,), Astrazon Blue (BB3) et Astrazone Blue (BB69) sur une mousse de sphaigne. L’etude porte sur l’application de trois modeles cinetiques de sorption pour la prediction de la consomation des teintures de base. On a trouve que le comportement de sorption etait du second ordre, en s’appuyant sur I’hypothese d’un mecanisme de pseudo-second ordre. On a egalement predit la constante de vitesse de sorption, la capacite d’equilibre et la vitesse de sorption initiale avec I’effet des diverses doses de tourbe et des concentrations de teintures initiales