Abstract: The factors influencing adsorption of U(Ⅵ) by Deinococcus radiodurans was studied in order to find out new methods of reducing uranium pollution.The Results showed that pH and adsorption time have significant effect on removal rate of uranium in solution.The removal rate of U(Ⅵ) reached 92.30% with wastewater pH value of 5，adsorption time for 180 minutes，initial concentration of 50 mg/L，and Deinococcus radiodurans dosage of 0.2 g/L.With the increase of U(Ⅵ）,initial concentration of uranium adsorption rate decreased slightly, the adsorption capucity almost proportional to U(Ⅵ) concentration. Research of adsorption mechanism revealed that the adsorption of U(Ⅵ) by Deinococcus radiodurans fixes the Freundlich model and pseudo-second dynamics model.

Key words: Deinococcus radiodurans, Uranium(Ⅵ) , Adsorption