Development and testing of ion exchangers for treatment of liquid wastes at Oak Ridge National Laboratory
- Oak Ridge National Lab., TN (United States)
- Tennessee Technological Univ., Cookeville, TN (United States)
This report addresses three areas of waste treatment: (1) treatment of newly generated low-level liquid waste and Melton Valley Storage Tank (MVST) supernate using inorganic ion exchangers; (2) treatment of processing streams at the Radiochemical Engineering Development Center (REDC); and (3) removal of radionuclides from organic solutions. Distribution of various radionuclides between simulated waste solutions and several sorbents was determined in batch tests. Inorganic ion exchangers were prepared in the form of microspheres by an intemal gelation process. Microspheres of hydrous titania, hydrous zirconia, hydrous titania containing embedded sodium cobalt hexacyanoferrate, and the corresponding phosphate forms of these materials were prepared. Several zeolites (PDZ-140, PDZ-300, EE-96, CBV-10A) and inorganic ion exchangers (hydrous titania, hydrous zirconia, polyantimanic acid, sodium cobalt hexacyanoferrate) were tested for the removal of cesium and strontium from the acidic simulated Cleanex raffinate generated at REDC. A resorcinol-based ion-exchange resin and three types of sodium titanate were tested for removal of cesium and strontium from the REDC caustic dissolver solution. Hydrous titania, hydrous zirconia, and their corresponding phosphates were tested for the removal of Eu{sup 3+} from various solutions of di-2-ethylbexyl phosphoric acid (HDEHP) in toluene or dodecane.
- Research Organization:
- Oak Ridge National Lab., TN (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 10156586
- Report Number(s):
- ORNL/TM--12315; ON: DE93013460
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105
CESIUM
CHEMICAL REACTIONS
COBALT COMPLEXES
EFFICIENCY
EUROPIUM
FERRICYANIDES
ION EXCHANGE MATERIALS
LIQUID WASTES
LOW-LEVEL RADIOACTIVE WASTES
MICROSPHERES
PH VALUE
PHOSPHATES
POTASSIUM COMPOUNDS
RADIOACTIVE WASTE PROCESSING
REMOVAL
SEPARATION PROCEDURES
SODIUM COMPOUNDS
SOLUBILITY
SORPTION
STRONTIUM
TESTING
TITANIUM OXIDES
WASTE PROCESSING
ZEOLITES
ZIRCONIUM OXIDES