▎ 摘　　要

The composite adsorbent graphene oxide-chitosan (GO-CTS) was prepared by Hummers method and characterized by FTIR and SEM. The products were used to study the adsorption of uranium from aqueous solution. The adsorption properties were estimated from the solution pH, adsorbent dosage, contact time and initial uranium concentration. The results show that for the uranium solution with an initial concentration of 10 mg/L, the optimum adsorption conditions of GO and GO-CTS are: pH 4 similar to 7 and 5, dosage 1.0 g/L and 1.0 g/L, adsorption balance time <1 min and 70 min, and the maximum uranium removal rate 99.5% and 97.5%, respectively. The equilibrium adsorption data of GO and GO-CTS corresponds to the Freundlich isotherms model, which indicates that the adsorption process is a multi-molecular physical adsorption. The maximum adsorption capacities of GO and GO-CTS are 78.13 mg/g and 114.94 mg/g, respectively.