Development and testing of ion exchangers for treatment of liquid wastes at Oak Ridge National Laboratory

Technical Report · Mon Mar 01 00:00:00 EST 1993

DOI:https://doi.org/10.2172/6447056· OSTI ID:6447056

Collins, J L; Davidson, D J; Chase, C W; Egan, B Z ^[1]; Ensor, D D; Bright, R M; Glasgow, D C ^[2]

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1. Oak Ridge National Lab., TN (United States)
2. 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. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6447056
• Report Number(s): ORNL/TM-12315; ON: DE93013460
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CESIUM
REMOVAL
COBALT COMPLEXES
CHEMICAL REACTIONS
EUROPIUM
FERRICYANIDES
ION EXCHANGE MATERIALS
TESTING
LOW-LEVEL RADIOACTIVE WASTES
RADIOACTIVE WASTE PROCESSING
POTASSIUM COMPOUNDS
SODIUM COMPOUNDS
STRONTIUM
EFFICIENCY
LIQUID WASTES
MICROSPHERES
PH VALUE
PHOSPHATES
SOLUBILITY
SORPTION
TITANIUM OXIDES
ZEOLITES
ZIRCONIUM OXIDES
ALKALI METAL COMPOUNDS
ALKALI METALS
ALKALINE EARTH METALS
CHALCOGENIDES
COMPLEXES
ELEMENTS
INORGANIC ION EXCHANGERS
IRON COMPLEXES
MANAGEMENT
MATERIALS
METALS
MINERALS
OXIDES
OXYGEN COMPOUNDS
PHOSPHORUS COMPOUNDS
PROCESSING
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE MANAGEMENT
RADIOACTIVE WASTES
RARE EARTHS
SILICATE MINERALS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
ZIRCONIUM COMPOUNDS
052001* - Nuclear Fuels- Waste Processing
400105 - Separation Procedures