Patent ID: 7994379
Filing Date: 2011-08-09
Classification: C02F,G21F

Abstract:
1. A method for containing radionuclides from a radioactive chloride substance comprising the steps of: a. uniformly mixing a clay mineral with water to create an aqueous clay suspension; b. after the mixing, refining the aqueous clay suspension, resulting in a radionuclide containment composition; c. combining the radionuclide containment composition with the radioactive chloride substance to create an aqueous slurry and allow radionuclide exchange with the radionuclide containment composition; and d. adding a silver-based solution to the aqueous slurry, producing a suspension; and wherein the clay mineral consists of at least about 95% montmorillonite particles, with the remaining percentage consisting silica particles; wherein the montmorillonite particles comprise: wherein the refining is accomplished by filtering the aqueous clay suspension through a sieve to remove residual coarse material , wherein an aperture size of the sieve ranges from 300 μm to<38 μm.