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Studies toward the Use of Ionic Liquids and Supercritical CO2 for the Recovery and Separation of Praseodymium from Waste Streams

Journal Article · · Catalysts
 [1];  [2];  [2];  [2]
  1. Idaho State Univ., Pocatello, ID (United States)
  2. Idaho National Lab. (INL), Idaho Falls, ID (United States)
+ Show Author Affiliations
Waste streams from the incineration of metal-containing materials like such as computer processor boards and batteries may contain critical rare earth elements like praseodymium. Data on the solubility of Pr compounds and on their distribution coefficients in supercritical CO2/ionic liquid two-phase systems are important to determine if an ionic liquid/supercritical CO2 two-phase approach is feasible toward the recovery of a particular metal. This work provides data on the solubility of various praseodymium compounds in butyl-methyl-pyrrolidinium bis(trifluoromethylsulfonyl)imide (BMPyTf2N) ionic liquid and on the distribution coefficients of these praseodymium compounds in the supercritical CO2 phase of the two-phase BMPyTf2N ionic liquid/supercritical CO2 system, with and without a tributyl phosphate additive.
Research Organization:
Idaho National Laboratory (INL), Idaho Falls, ID (United States)
Sponsoring Organization:
USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Nuclear Energy (NE)
Grant/Contract Number:
AC07-05ID14517
OSTI ID:
1896743
Report Number(s):
INL/JOU-22-66127-Rev000
Journal Information:
Catalysts, Journal Name: Catalysts Journal Issue: 3 Vol. 12; ISSN 2073-4344
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English

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Figures / Tables (7)

Figure 1(p. 6)figure Figure 1
Figure 2(p. 7)figure Figure 2
Table 1(p. 7)table Table 1
Table 2(p. 8)table Table 2
Table 3(p. 8)table Table 3
Table 4(p. 9)table Table 4
Table 5(p. 10)table Table 5

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
electrochemical reduction
ionic liquid
praseodymium recovery
rare earth metals
solubility
supercritical C02
two-phase system