Abstract
Chitosan benzoyl thiourea derivative has been synthesized and used successfully for the removal of the hazardous 60Co and 152+154Eu radionuclides from aqueous solutions. Different parameters were applied for studying the adsorbitivity of these radionuclides, including change in pH, time, ion concentration, and equilibrium concentration. Freundlich and Langmuir isotherms were applied successfully to fit the experimental data. Two more isotherm models, Lagergren and Morris–Webber, have been applied. All the parameters and the constants calculated for the kinetic isotherms and models are evaluated and listed. A mechanism for the complex formation of Co +2 with the chitosan derivative has been suggested.
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