Abstract
The main structure of polystyrene-divinylbenzene (PSD) was synthesized by suspension method, and chlorinated resin (PSD-Cl) obtained by chloromethylation,then an alkylimide was grafted onto the resin skeleton to obtain the new type alkylimides chelating resin (PSD-AI). The chelating resin was characterized by scanning electron microscopy, thermogravimetric analysis, infrared spectroscopy, etc. Batch experiments were conducted and effects of different factors on adsorption of uranium(VI) were studied. Results showed that surface of the novel chelating resin was distributed with a large number of pores which could provide more active sites during the adsorption process. At pH = 5.0, reaction temperature 298 K, adsorbent dosage 50.0 mg, initial concentration of U(VI) solution 100.0 mg/L and reaction time 42 h, maximum adsorption capacity of PSD-AI was 75.6 mg/g.
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