Systhesis And Characterization Of The Chalcogenide Zeolite Analog And Its Capability For Separation Of Sr And Cs

With the development of the nucleus industry, there will be large numbers of nuclear waste. The radioactive water is harm to our living environment, so it is very important for the sustainable developments of our nuclear industry to purify the waste water. The final aim of the waste water treatment and disposal is to imbed the high level radioactive liquid waste (HLLW) in the deep earth after solidifying them glassily, and to imbed the low- /mid-level liquid waste water in the superficial stratum after enclosed them with concrete, for minimizing the potential disserving from these radioactive wastes to the human being and the environment. Inorganic ion exchangers have advantages in the treatment of HLLW, due to their superior resistance to radiation and usually high thermal stability and their good selectivity, so plentiful of researches have been made in this area in the last 4 decades, in which hundreds of and even thousands of inorganic compounds were involved. However, up to the present, several selected better inorganic ion-exchanging materials, like zeolite, AMP and ferrocyanides, and titanosilicates etc., have certain defects, such as poor mechanical intensity, difficult to figuration and possible stronger impacts on ion-exchanging capacity (IEC) by higher acidity and salinity in HLLW , which limited the application of these materials to the treatment of HLLW. So it has always been the hotspot of the domain to find new inorganic ion-exchanging materials with excellent capabilities.The open-framework porous inorganic material with low density and high charges should have high potential in the treatment of the radioactive wastewater. Recently, chalcogenides based on supertetrahedronal clusters have occurred as a new...