Abstract
The present study deals with the potential application of the two adsorbents Dowex M4195 (M4195) and Lewatit MonoPlus TP220 (TP220) for the removal of vanadium(V) from the model and real aqueous solutions. The kinetic and equilibrium studies as well as the effects of pH, ion exchanger dose, contact time and initial concentration were studied using the batch method. Both the Langmuir and Freundlich adsorption isotherms and the pseudo-first order, pseudo-second order, intraparticle diffusion kinetic models were used to describe the adsorption process. The maximum adsorption capacity obtained from the Langmuir isotherm was found to be 248 mg/g and 209 mg/g for TP220 and M4195, respectively. The kinetics followed the pseudo second order reaction. Desorption, reusability of ion exchangers and vanadium(V) removal in the continuous system (column studies) were determined.
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