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To prevent radioactive iodides from releasing into the environment in an accident of a nuclear power plant,silver-impregnated alumina(Ag/Al2O3)was fabricated,and its performance of radioactive iodine adsorption from high-temperature gas was tested.The silver loadings on alumina were obtained by ICP-OES and the texture properties of Ag/Al2O3were characterized by N2adsorption-desorption.The Ag/Al2O3was of reduced specific surface(107.2 m2/g at 650?C).Crystalline phases of Ag/Al2O3were confirmed through XRD characterization.After calcination at 650?C for 2 h,the crystalline phase of Ag/Al2O3changed.The131I-removal efficiency of Ag/Al2O3was tested at 100,250,350,450 and 650?C,with good decontamination factor values for the radioactive iodine.Silver-impregnated alumina can be applied as adsorbents to remove radioactive iodine at high temperatures in nuclear accident.
To prevent radioactive iodides from releasing into the environment in an accident of a nuclear power plant, silver-impregnated alumina (Ag / Al2O3) was fabricated, and its performance of radioactive iodine adsorption from high-temperature gas was tested. Silver loadings on alumina were obtained by ICP-OES and the texture properties of Ag / Al2O3were characterized by N2adsorption-desorption.The Ag / Al2O3was of reduced specific surface (107.2 m2 / g at 650 ° C) .Crystalline phases of Ag / Al2O3were confirmed through XRD characterization. After calcination at 650 ° C for 2 h, the crystalline phase of Ag / Al203changed. The131I-removal efficiency of Ag / Al2O3was tested at 100, 250, 350, 450 and 650 ° C, with good decontamination factor values for the radioactive iodine.Silver-impregnated alumina can be applied as adsorbents to remove radioactive iodine at high temperatures in nuclear accident.