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Method of separating thorium from plutonium

Patent ·
OSTI ID:865087
 [1];  [1]
  1. Los Alamos, NM
+ Show Author Affiliations

A method of chemically separating plutonium from thorium. Plutonium and thorium to be separated are dissolved in an aqueous feed solution, preferably as the nitrate salts. The feed solution is acidified and sodium nitrite is added to the solution to adjust the valence of the plutonium to the +4 state. A chloride salt, preferably sodium chloride, is then added to the solution to induce formation of an anionic plutonium chloride complex. The anionic plutonium chloride complex and the thorium in solution are then separated by ion exchange on a strong base anion exchange column.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM
DOE Contract Number:
W-7405-ENG-36
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Number(s):
US 4459268
OSTI ID:
865087
Country of Publication:
United States
Language:
English

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Related Subjects

/423/
acidified
added
adjust
anion
anion exchange
anionic
aqueous
aqueous feed
base
chemically
chemically separating
chloride
chloride complex
chloride salt
column
complex
dissolved
exchange
exchange column
feed
feed solution
formation
induce
method
nitrate
nitrate salt
nitrate salts
nitrite
plutonium
preferably
preferably sodium
salt
salts
separated
separating
separating plutonium
sodium
sodium chloride
sodium nitrite
solution
strong
strong base
thorium
valence