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<strong>Arab</strong> <strong>Journal</strong> Of <strong>Nuclear</strong> Science And <strong>Applications</strong>, 46(2),(1-16) 2013<br />
Conclusions<br />
Poly acrylic acid / 2-hydroxyethyle methacrylate ( p-AAc/ HEMA) was prepared using direct<br />
gamma irradiation technique, characterized using DSC, ESR, IR, <strong>and</strong> SEM measurements <strong>and</strong> tested<br />
as an ion exchange material for the removal <strong>of</strong> europium, neodymium, strontium, cadmium, zinc, <strong>and</strong><br />
cobalt ions from nitrate solutions. The uptake <strong>of</strong> these ions increases with increasing the pH value <strong>and</strong><br />
decreases with increasing the metal ion concentration. Sorption kinetics modeling was investigated by<br />
studying some kinetic models, pseudo-first-order, pseudo-second-order kinetic model this reinforcing<br />
the applicability <strong>of</strong> this model <strong>and</strong> intra-particle diffusion model is applicable for the adsorption<br />
process <strong>and</strong> the adsorption is controlled by intra-particle diffusion,.<br />
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