Abstract: Hydroxyapatite is synthesized by hydrothermal method to remove the uranium from wastewater, and the influence factors in this experiment are discussed. The test results show that the removal efficiency of uranium using HAP reaches up to 95%. The major factors that affect removal efficiency include pH value, temperature, the dosage of HAP and the reaction time. The removal efficiency increases with the reaction time and the dosage of HAP increasing. It is advantageous to the adsorption of uranium by acid or neutral medium. It costs about 60 minutes to meet the adsorption equilibrium.

Key words: Hydroxyapatite, Uranium-bearing Wastewater, Adsorption