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Mixed-layered bismuth--oxygen--iodine materials for capture and waste disposal of radioactive iodine

Patent ·
OSTI ID:1167027
;
Materials and methods of synthesizing mixed-layered bismuth oxy-iodine materials, which can be synthesized in the presence of aqueous radioactive iodine species found in caustic solutions (e.g. NaOH or KOH). This technology provides a one-step process for both iodine sequestration and storage from nuclear fuel cycles. It results in materials that will be durable for repository conditions much like those found in Waste Isolation Pilot Plant (WIPP) and estimated for Yucca Mountain (YMP). By controlled reactant concentrations, optimized compositions of these mixed-layered bismuth oxy-iodine inorganic materials are produced that have both a high iodine weight percentage and a low solubility in groundwater environments.
Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC04-94AL85000
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Number(s):
8,926,870
Application Number:
13/752,600
OSTI ID:
1167027
Country of Publication:
United States
Language:
English

References (4)

Some phase relationships between basic bismuth chlorides in aqueous solutions at 25 °C journal December 1987
The crystal structure of Bi4O5I2 and its relation to the structure of Bi4O5Br2 journal January 2002
In-situ Formation of Bismuth-Based Iodine Waste Forms journal January 2007
The crystal structure of α-Bi5O7I journal January 2001

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