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Nanoporous Al2O3 as a “Getter” for Volatile Radionuclides into Nanostructued Glass-Ceramic Waste Forms

Sandia National Laboratories

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Publications:

PDF Document PublicationMarket Sheet (738 KB)


Technology Marketing Summary

The first phase of this project is capture and encapsulation which is achieved by using nanoporous alumina to confine gaseous iodine, for example, from fission or waste processing. The captured iodine is then reacted with silver or copper to form precipitates inside the nanopores of the material (the fixation). The material is then mixed with glass-forming constituents which are then heated to seal and encapsulate the waste forms.

Description

These radionuclides are entrapped in a glass/crystalline matrix which does not require the use of silver to immobilize iodine. This process not only keeps operation costs lower, it reduces the potential hazards to the environment. By encapsulating volatile radionuclides such as iodone, the structure provides an increased resistance to breakdown and controlling the harmful effects of similar radionuclides.

Benefits
  • Encapsulation of volatile radionuclides for safer disposal and cleanup
  • Protection of soil and water supplies
  • Reduced cost and hazards due to elimination of silver immobilizing iodine
  • Reduce risk of materials with long half-lives
  • High resistance to chemical and mechanical degradation
Applications and Industries
  • Environmental cleanup of volatile materials
  • Nuclear fuel reprocessing
  • Government/commercial nuclear facilities
  • Chemical separation/concentration
  • Water treatment
  • Other chemical industries
  • Radioactive/non-radioactive waste management
More Information

Multiple patents pending.

Patents and Patent Applications
ID Number
Title and Abstract
Primary Lab
Date
Patent 8,334,421
Patent
8,334,421
Method of making nanostructured glass-ceramic waste forms
A method of rendering hazardous materials less dangerous comprising trapping the hazardous material in nanopores of a nanoporous composite material, reacting the trapped hazardous material to render it less volatile/soluble, sealing the trapped hazardous material, and vitrifying the nanoporous material containing the less volatile/soluble hazardous material.
Sandia National Laboratories 12/18/2012
Issued
Patent 8,772,566
Patent
8,772,566
Method of making nanostructured glass-ceramic waste forms
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.
Sandia National Laboratories 07/08/2014
Issued
Technology Status
Technology IDDevelopment StageAvailabilityPublishedLast Updated
SD #10672 and SD #11220Development - Sandia has shown that this technology has been successfully tested in its near final form under relevant, expected conditions. Available - Various license and partnering options are available. Please contact the Intellectual Property department to discuss.04/09/201010/31/2016

Contact SNL About This Technology

To: Technology Inquiries<ip@sandia.gov>