Abstract:The development of nuclear energy produces a large amount of uranium-containing wastewater, which endangers the ecological environment and human health. In this paper, a citric acid grafted ramie fiber adsorbent was prepared by esterification for uranium removal from aqueous solution. The effects of initial concentration, solution pH value, contact time and temperature on uranium uptake of the adsorbent were studied. The results show that the maximum adsorption capacity is 397 mg-U/g at the initial uranium concentration of 20 mg/L, pH=6 and the adsorbent loading of 0.02 g/L. Moreover, the uranium adsorption process conforms to Langmuir model and pseudo-second-order?kinetic model, respectively. In addition, the adsorbent has obvious inhibitory effect on E. coli and shows good antibacterial properties.