KINETIC AND ISOTHERM ADSORPTION STUDIES OF COBALT (II) ON MESOPOROUS ALUMINOSILICATE MATERIALS AND MESOPOROUS CARBON OF MCM-41 TYPE

Abstract

The main objective of this work is to study the use of silica and alumina materials and coals mesoporous for the adsorption of cobalt ions from a synthetic industrial effluent. Three types of mesoporous materials MCM-41, Al-MCM-41 (10), Al-MCM-41 (20) and one carbon CMK-3M were synthesized. The characterization is carried out by X-ray diffraction and nitrogen adsorption-desorption (BET). Efficiency of prepared adsorbents was tested toward the adsorption of cobalt (II) ions. Modeling of the adsorption kinetics of cobalt by the four materials in an aqueous medium under optimal operating conditions is pseudo first order. The adsorption isotherm on the four materials shows that the Langmuir model is favorable only with CMK-3M coal. On the other hand, the model of Freundlich is favorable with the four matrices studied with values of adjustment coefficient close to unity