Radioactive glass composition

TABLE I. Fully Radioactive Waste Glass Composition... 

The leach rates seen here can be compared to those from a similar test on simulated waste glass of the same composition. The leach rates for cesium and strontium from the fully radioactive Rlass were the same as the leach rates of the simulated glass. Although both tests were done on bulk glass samples, they differed in configuration. The fully radioactive samples were disks cm (height) x 3.5 cm (diameter)], and the... 

The release rate was determined for 10 radioisotopes from fully radioactive waste glasses in deionized water for a period of 1.75 years. For cesium and strontium, good agreement exists between the leach rates for simulated and fully radioactive glass of the same composition. 

Table I. Composition of SRP Radioactive Borosilicate Glass Containing Tank 11 Waste ...

The basalt formulation employs Columbia River-type basalt as a source of silica. Extensive deposits of this basalt underlie the Hanford Reservation so that it is readily available as a raw material for large-scale glass-making. The chemical composition of typical Columbia River basalt is shown in Table VI physical properties of this type of basalt have been determined by Krupka (8) and Leibowitz, Williams, and Chasanov (9). We also note that incorporation of radioactive waste material into melted basalt was studied briefly earlier in Czechoslovakia by Saidl and Ralkova (10). 

Composite materials are mechanical dispersions of radioactive solids, for instance ciystalline or vitreous radioactive phases in metal matrix [24], glass-encapsulated Ca-phosphate based ceramics [30] glass-bonded sodalite [31,32] glass-ceramics for plutonium waste immobilization [33] and so on. 

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