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Title: Recovery of plutonium from solvent wash solutions

A number of potential alternatives to the acid hydrolysis recovery of Pu were investigated. The most promising alternative for short-term use appears to be an anion exchange process that would eliminate the long boiling times and the multiple-pass concentration steps needed with the solvent extraction process because it separates the Pu from the dibutyl phosphate (DBP) while at the same time concentrating the Pu. However, restart of the Primary Recovery Column (PRC) to process this solution would require significant administrative effort. The original boiling recovery by acid hydrolysis followed by solvent extraction is probably the most expedient way to process the Pu-DBP-carbonate solution currently stored in tank 13.5 even with its long processing times and dilute product concentration. Anion exchange of a heat stabilized acidified solution is a more efficient process, but requires restart of the PRC. Extended-boiling acid hydrolysis or anion exchange of a heat stabilized acidified solution provide two well developed alternatives for recovery of the Pu from the tank 13.5 carbonate. Further work defining additional recovery processes is not planned at this time.
Authors:
Publication Date:
OSTI Identifier:
7008304
Report Number(s):
WSRC-RP-92-461
ON: DE93002254
DOE Contract Number:
AC09-89SR18035
Resource Type:
Technical Report
Research Org:
Westinghouse Savannah River Co., Aiken, SC (United States)
Sponsoring Org:
DOE; USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; PLUTONIUM; MATERIALS RECOVERY; SEPARATION PROCESSES; ANIONS; BOILING; DBP; FEASIBILITY STUDIES; HYDROLYSIS; ION EXCHANGE; SAVANNAH RIVER PLANT; SODIUM CARBONATES; SOLUTIONS; SOLVENT EXTRACTION; ACTINIDES; ALKALI METAL COMPOUNDS; BUTYL PHOSPHATES; CARBON COMPOUNDS; CARBONATES; CHARGED PARTICLES; CHEMICAL REACTIONS; DECOMPOSITION; DISPERSIONS; ELEMENTS; ESTERS; EXTRACTION; IONS; LYSIS; MANAGEMENT; METALS; MIXTURES; NATIONAL ORGANIZATIONS; ORGANIC COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; OXYGEN COMPOUNDS; PHASE TRANSFORMATIONS; PHOSPHORIC ACID ESTERS; PROCESSING; SODIUM COMPOUNDS; SOLVOLYSIS; TRANSURANIUM ELEMENTS; US AEC; US DOE; US ERDA; US ORGANIZATIONS; WASTE MANAGEMENT; WASTE PROCESSING 050800* -- Nuclear Fuels-- Spent Fuels Reprocessing