The adsorption of two dyes, namely, cationic red XGRL and cationic brilliant blue RL onto natural attapulgite were studied, and adsorption mechanism was focused on from the view point of kinetics. Kinetic analysis showed that the adsorption processes of two cationic dyes on natural attapulgite obey the pseudo second-order model. The adsorption capacity of dyes was raised with temperature, but the equilibrium adsorption capacity of cationic brilliant blue RL was more than cationic red X-GRL. The activation energies of adsorption had also been ev...
