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Title: Method for selectively reducing plutonium values by a photochemical process

Abstract

The rate of reduction of Pu(IV) to Pu(III) in nitric acid solution containing a reducing agent is enhanced by exposing the solution to 200-500 nm electromagnetic radiation. Pu values are recovered from an organic extractant solution containing Pu(IV) values and U(VI) values by the method of contacting the extractant solution with an aqueous nitric acid solution in the presence of a reducing agent and exposing the aqueous solution to electromagnetic radiation having a wavelength of 200-500 nm. Under these conditions, Pu values preferentially distribute to the aqueous phase and U values preferentially distribute to the organic phase.

Inventors:
 [1];  [1];  [2]
  1. Oak Ridge, TN
  2. Kingston, TN
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
OSTI Identifier:
863246
Patent Number(s):
4131527
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01G - COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; selectively; reducing; plutonium; values; photochemical; process; rate; reduction; iii; nitric; acid; solution; containing; agent; enhanced; exposing; 200-500; nm; electromagnetic; radiation; recovered; organic; extractant; contacting; aqueous; presence; wavelength; conditions; preferentially; distribute; phase; plutonium values; extractant solution; acid solution; organic phase; solution containing; electromagnetic radiation; nitric acid; aqueous solution; reducing agent; aqueous phase; organic extractant; chemical process; aqueous nitric; selectively reducing; /204/423/976/

Citation Formats

Friedman, Horace A, Toth, Louis M, and Bell, Jimmy T. Method for selectively reducing plutonium values by a photochemical process. United States: N. p., 1978. Web.
Friedman, Horace A, Toth, Louis M, & Bell, Jimmy T. Method for selectively reducing plutonium values by a photochemical process. United States.
Friedman, Horace A, Toth, Louis M, and Bell, Jimmy T. Sun . "Method for selectively reducing plutonium values by a photochemical process". United States. https://www.osti.gov/servlets/purl/863246.
@article{osti_863246,
title = {Method for selectively reducing plutonium values by a photochemical process},
author = {Friedman, Horace A and Toth, Louis M and Bell, Jimmy T},
abstractNote = {The rate of reduction of Pu(IV) to Pu(III) in nitric acid solution containing a reducing agent is enhanced by exposing the solution to 200-500 nm electromagnetic radiation. Pu values are recovered from an organic extractant solution containing Pu(IV) values and U(VI) values by the method of contacting the extractant solution with an aqueous nitric acid solution in the presence of a reducing agent and exposing the aqueous solution to electromagnetic radiation having a wavelength of 200-500 nm. Under these conditions, Pu values preferentially distribute to the aqueous phase and U values preferentially distribute to the organic phase.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1978},
month = {1}
}

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