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Title: Method for separating actinides. [Patent application; stripping of Np from organic extractant]

Abstract

An organic solution used for processing spent nuclear reactor fuels is contacted with an aqueous nitric acid solution to strip Np(VI), U(VI), and Pu(IV) from the organic solution into the acid solution. The acid solution is exposed to ultraviolet light, which reduces Np(VI) to Np(V) without reducing U(VI) and Pu(IV). Since the solubility of Np(V) in the organic solution is much lower than that of Np(VI), U(VI), and Pu(IV), a major part of the Np is stripped from the organic solution while leaving most of the U and Pu therein.

Inventors:
;
Issue Date:
OSTI Identifier:
6270573
Assignee:
Dept. of Energy TIC; ERA-06-034358; EDB-81-114913
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; NEPTUNIUM; SOLVENT EXTRACTION; SPENT FUELS; REPROCESSING; AQUEOUS SOLUTIONS; NITRIC ACID; ORGANIC SOLVENTS; PLUTONIUM; SEPARATION PROCESSES; ULTRAVIOLET RADIATION; ACTINIDES; DISPERSIONS; ELECTROMAGNETIC RADIATION; ELEMENTS; ENERGY SOURCES; EXTRACTION; FUELS; HYDROGEN COMPOUNDS; INORGANIC ACIDS; MATERIALS; METALS; MIXTURES; NUCLEAR FUELS; RADIATIONS; REACTOR MATERIALS; SOLUTIONS; SOLVENTS; TRANSURANIUM ELEMENTS; 050800* - Nuclear Fuels- Spent Fuels Reprocessing

Citation Formats

Friedman, H.A., and Toth, L.M. Method for separating actinides. [Patent application; stripping of Np from organic extractant]. United States: N. p., 1980. Web.
Friedman, H.A., & Toth, L.M. Method for separating actinides. [Patent application; stripping of Np from organic extractant]. United States.
Friedman, H.A., and Toth, L.M. Mon . "Method for separating actinides. [Patent application; stripping of Np from organic extractant]". United States.
@article{osti_6270573,
title = {Method for separating actinides. [Patent application; stripping of Np from organic extractant]},
author = {Friedman, H.A. and Toth, L.M.},
abstractNote = {An organic solution used for processing spent nuclear reactor fuels is contacted with an aqueous nitric acid solution to strip Np(VI), U(VI), and Pu(IV) from the organic solution into the acid solution. The acid solution is exposed to ultraviolet light, which reduces Np(VI) to Np(V) without reducing U(VI) and Pu(IV). Since the solubility of Np(V) in the organic solution is much lower than that of Np(VI), U(VI), and Pu(IV), a major part of the Np is stripped from the organic solution while leaving most of the U and Pu therein.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {11}
}