ABSTRACT A new N-diethyl imidazole modified PS resins was synthesized in this paper. The composition, structure, and properties of the resulting resins were studied by means of Fourier transform infrared (FTIR) and elemental analysis methods. The results showed that the resins hold the adsorption function group of quaternary ammonium structure. Meanwhile, the adsorption properties of the resulting resins for iodine were investigated. The results showed that the uptake of iodine found to be higher at natural water than at acidic medium; the adsorption capacity increased with the increasing of temperature, but when the temperature is higher than 30°C, adsorption capacity didn’t increase; the adsorption kinetics of the resins can be modeled by pseudo first-order rate equation and pseudo second-order rate equation wonderfully; Both Freundlich equations and Langmuir equations could well interpret the adsorption of resins for iodine.
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