Last modified: 2018-07-19
Abstract
The aim of this work was to compare two sorbent, before and after modification by magnetite particles for removal of cationic dye methylene blue from aqueous solution. The magnetic composite was characterized by XRD and ATG. The influence of contact time, initial concentration of dye, and the effect of temperature were studied. The amounts of MB adsorbed at equilibrium for the different concentrations were respectively 10.33, 11.93mg/g by KDD3Fe3O4, was less than by KDD3 purified clay with 26.73 36.46 mg/g, according to deposition of magnetite particles on surface of KDD3 purified clay. Kinetics, thermodynamic studies and adsorption isotherm models were affected to evaluate experimental data. The results exhibit that the adsorption of MB is well described by the second order model. Furthermore, the thermodynamic study revealed that the adsorption is spontaneous and exothermic.