Densified waste form and method for forming
| DWPI Title: Densified waste material for disposal of temperature sensitive waste, comprises absorbed temperature sensitive waste and compacted metallic powder compacted at below vaporization temperature of temperature sensitive waste |
| Abstract: Materials and methods of making densified waste forms for temperature sensitive waste material, such as nuclear waste, formed with low temperature processing using metallic powder that forms the matrix that encapsulates the temperature sensitive waste material. The densified waste form includes a temperature sensitive waste material in a physically densified matrix, the matrix is a compacted metallic powder. The method for forming the densified waste form includes mixing a metallic powder and a temperature sensitive waste material to form a waste form precursor. The waste form precursor is compacted with sufficient pressure to densify the waste precursor and encapsulate the temperature sensitive waste material in a physically densified matrix. |
| Use: Densified waste material is used for sequestering and storage for disposal of temperature sensitive waste from nuclear reactor fuel cycles and nuclear legacy waste in the dense and durable waste material. |
| Advantage: The environmentally-friendly densified waste material has excellent durability, mechanical strength, stability, volatility and mobility, and low waste outgassing and low rates of leaching into groundwater over a large spans of time, and is prepared by simple method. |
| Novelty: A densified waste material (101) comprises a temperature sensitive waste material absorbed onto an adsorbent to form an adsorbed temperature sensitive waste material (105) and physically densified matrix arranged into the adsorbed temperature sensitive waste material. The physically densified matrix is a compacted metallic powder (103) compacted at a temperature below the vaporization temperature of the temperature sensitive waste. |
| Filed: 7/21/2015 |
| Application Number: US14805220A |
| Tech ID: SD 12540.1 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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