Development and testing of inorganic sorbents made by the internal gelation process for radionuclide and heavy metal separations
- Oak Ridge National Lab., TN (United States). Chemical Technology Div.
The objectives of this task are to develop, prepare, and test microspheres and granular forms of inorganic ion exchangers to remove radionuclides and heavy metals from waste streams occurring at various sites. Several inorganic materials, such as hexacyanoferrates, titanates, phosphates, and oxides have high selectivities and efficiencies for separating and removing radionuclides such as uranium, technetium, cesium, and strontium, and metals such as cobalt, silver, zinc, and zirconium from aqueous waste streams. However, these sorbents frequently exist only as powders and consequently are not readily adaptable to continuous processing such as column chromatography. Making these inorganic ion exchangers as microspheres or granular forms improves the flow dynamics for column operations and expands their practical applications. Microspheres of several materials have been prepared at ORNL, and the effectiveness of zirconium monohydrogen phosphate and hydrous titanium oxide microspheres for removing radionuclides from hot cell waste solutions has been demonstrated.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 201694
- Report Number(s):
- CONF-960158-4; ON: DE96005660; TRN: 96:008342
- Resource Relation:
- Conference: Efficient separations and processing crosscutting program 1996 technical meeting, Gaithersburg, MD (United States), 16-19 Jan 1996; Other Information: PBD: 29 Nov 1995
- Country of Publication:
- United States
- Language:
- English
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