Abstract
A new type chelating resin grafted alkylimide was synthesized to investigate uranium(VI) adsorption properties. The chelating resin was characterized by scanning electron microscopy, infrared spectroscopy and mercury intrusion porosimetry. Results showed that the chelating resin was a macroporous resin with the average pore size of 172.8 nm. The maximum adsorption amount could reach 64.9 mg/g when the dosage was 60 mg, the initial U(VI) concentration was 100 mg/L, the pH was 5.0 and the balance time was 48 h. The adsorption process was accorded with pseudo-first-order kinetic model and Freundlich isotherm model, and adsorption process was a spontaneous endothermic reaction.
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