Method for vitrification of used sorbents with high-active radicals inbuilt in their structure by sol-gel method

摘要

the object of the application is the way zeszkliwiania spent sorbent with imbedded surrogate isotope caesium-137 as example, the applicability of methods zol - gel in the treatment of highly active pierwiastku00f3in hl in the form of silica glasses. the way is that the solution tetraetoksysilanu (teos) added ascorbic acid.after an hour of mixing to sample the sorbent with imbedded caesium and mixed with another hour.then, the metal nitrate to remove heat from the glass transition, preferably sodium nitrate and mixed with 60 minutes at the same temperature.the mass of the vaporized in the evaporator under reduced pressure for an hour, and then dried for 24 h at a temperature 140u00b0c. subsequently, the sample is subjected to heat treatment in 900u00b0c.the final product at a temperature 900u00b0c is permanently embedded in silica glass with on its structure the sorbent wysyconym caesium.in the direct synthesis was applied for permanent incorporation sorbent wysyconego radionuclide in silica glass structure using a surrogate of cs137 as element modelfor elements hl.