EQUILIBRIUM OF THE SYSTEM LANTHANUM NITRATE-PRASEODYMIUM NITRATE-NITRIC ACID-WATER-TRIBUTYL PHOSPHATE
- Ames Laboratory at Iowa State University, Ames, Iowa, United States
A study of the extraction characteristics of the three systems lanthanum nitrate--nitric acid--water--tributyl phosphate, praseodymium nitrate--nitric acid--water--tributyl phosphate, and lanthanum nitrate--praseodymium nitrate nitric acid -water--tributyl phosphate was conducted. The separation factors between praseodymium and lanthanum for the system lanthanum nitrate--praseodymium nitrate-nitric acid--water--tributyl phosphate were shown to be a function of the total nitrate concentration of an equilibrium phase and practically independent of solute composition. A method of predicting the concentrations of lanthanum nitrate, praseodymium nitrate, and nitric acid in an equilibrium phase of the system lanthanum nitrate--praseodymium nitrate--nitric acid--water--tributyl phosphate was presented. A comparison of the extraction characteristics of the system rare-earth nitrate--nitric acid--water--tributyl phosphate for the nitrates of lanthanum, praseodymium, neodymium, and samarium was made. (auth)
- Research Organization:
- Ames Lab., Ames, Iowa (United States)
- Sponsoring Organization:
- US Atomic Energy Commission
- DOE Contract Number:
- W-7405-ENG-82
- NSA Number:
- NSA-16-000087
- OSTI ID:
- 4834109
- Report Number(s):
- IS-335
- Country of Publication:
- United States
- Language:
- English
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