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Defense by-products production and utilization program: noble metal recovery screening experiments

Technical Report ·
DOI:https://doi.org/10.2172/5967301· OSTI ID:5967301
; ;
Isotopes of the platinum metals (rutheium, rhodium, and palladium) are produced during uranium fuel fission in nuclear reactors. The strategic values of these noble metals warrant considering their recovery from spent fuel should the spent fuel be processed after reactor discharge. A program to evaluate methods for ruthenium, rhodium, and palladium recovery from spent fuel reprocessing liquids was conducted at Pacific Northwest Laboratory (PNL). The purpose of the work reported in this docuent was to evaluate several recovery processes revealed in the patent and technical literature. Beaker-scale screening tests were initiated for three potential recovery processes: precipitation during sugar denitration of nitric acid reprocessing solutions after plutonium-uranium solvent extraction, adsorption using nobe metal selective chelates on active carbon, and reduction forming solid noble metal deposits on an amine-borane reductive resin. Simulated reprocessing plant solutions representing typical nitric acid liquids from defense (PUREX) or commercial fuel reprocessing facilities were formulated and used for evaluation of the three processes. 9 refs., 3 figs., 9 tabs.
Research Organization:
Pacific Northwest Lab., Richland, WA (USA)
DOE Contract Number:
AC06-76RL01830
OSTI ID:
5967301
Report Number(s):
PNL-5758; ON: DE86009042
Country of Publication:
United States
Language:
English

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Related Subjects

050800* -- Nuclear Fuels-- Spent Fuels Reprocessing
052001 -- Nuclear Fuels-- Waste Processing
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
CARBOHYDRATES
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
DENITRATION
DISACCHARIDES
ELEMENTS
ENERGY SOURCES
FUELS
HIGH-LEVEL RADIOACTIVE WASTES
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MANAGEMENT
MATERIALS
MATERIALS RECOVERY
METALS
NITRIC ACID
NUCLEAR FUELS
OLIGOSACCHARIDES
ORGANIC COMPOUNDS
PALLADIUM
PLATINUM METALS
PROCESSING
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE PROCESSING
RADIOACTIVE WASTES
REACTOR MATERIALS
RECOVERY
REPROCESSING
RHODIUM
RUTHENIUM
SACCHARIDES
SACCHAROSE
SEPARATION PROCESSES
SPENT FUELS
TRANSITION ELEMENTS
WASTE MANAGEMENT
WASTE PROCESSING
WASTES