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US 8,772,566 B2Granted
Method of making nanostructured glass-ceramic waste forms
AssigneeSandia Corporation
InventorsHuizhen Gao, Yifeng Wang, Mark A. Rodriguez, Denise N. Bencoe
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Abstract
A waste form for and a method of rendering hazardous materials less dangerous is disclosed that includes fixing the hazardous material in nanopores of a nanoporous material, reacting the trapped hazardous material to render it less volatile/soluble, and vitrifying the nanoporous material containing the less volatile/soluble hazardous material.
Claims20
A waste form formed by a method comprising the steps of:
- sorbing a hazardous radioactive material in nanopores of a nanoporous material;
- fixing the sorbed hazardous radioactive material with an alkaline reagent or alkaline silicate to render it less volatile/soluble by converting the sorbed hazardous material into a sorbed, anionic hazardous radioactive material;
- mixing the nanoporous material with a glass-forming component;
- and
- vitrifying the mixed nanoporous material and glass-forming component to form the waste form;
- wherein the waste form comprises nanometer precipitates comprising the hazardous radioactive material;
- and
- wherein the waste form excludes clay.
5 more elements
Dependencies are inferred from the claim text.