Adsorption decontamination of radioactive waste solvent by activated alumina and bauxites
An adsorption process utilizing activated alumina and activated bauxite adsorbents was evaluated as a function of operating parameters for the removal of low level radioactive contaminants from organic waste solvent generated in the fuel reprocessing facilities and support operations at Savannah River Site. The waste solvent, 30% volume tributyl phosphate in n-paraffin diluent, was degraded due to hydrolysis and radiolysis reactions of tributyl phosphate and n-paraffin diluent, producing fission product binding degradation impurities. The process, which has the potential for removing these activity-binding degradation impurities from the solvent, was operated downflow through glass columns packed with activated alumina and activated bauxite adsorbents. Experimental breakthrough curves were obtained under various operating temperatures and flow rates. The results show that the adsorption capacity of the activated alumina was in the order 10{sup 4} dpm/g and the capacity of the activated bauxite was 10{sup 5} dpm/g. The performance of the adsorption process was evaluated in terms of dynamic parameters (i.e. adsorption capacity, the height and the efficiency of adsorption zone) in such a way as to maximize the adsorption capacity and to minimize the height of the mass transfer or adsorption zone.
- Research Organization:
- Westinghouse Savannah River Co., Aiken, SC (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC09-89SR18035
- OSTI ID:
- 10186149
- Report Number(s):
- WSRC-MS--94-0443; ON: DE95000747
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ADSORPTION
ALUMINIUM OXIDES
BAUXITE
CHEMICAL ACTIVATION
DECONTAMINATION
EXPERIMENTAL DATA
EXTRACTION COLUMNS
LOW-LEVEL RADIOACTIVE WASTES
MATERIALS RECOVERY
ORGANIC SOLVENTS
PERFORMANCE TESTING
PUREX PROCESS
RADIOACTIVE WASTE PROCESSING
SAVANNAH RIVER PLANT
SORPTIVE PROPERTIES
TBP
WASTE PROCESSING