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

Journal Article · · Catalysts
 [1]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [2]
  1. Idaho State Univ., Pocatello, ID (United States)
  2. Idaho National Lab. (INL), Idaho Falls, ID (United States)
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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 Office of Nuclear Energy (NE); USDOE Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
AC07-05ID14517
OSTI ID:
1896743
Report Number(s):
INL/JOU-22-66127-Rev000; TRN: US2310716
Journal Information:
Catalysts, Vol. 12, Issue 3; ISSN 2073-4344
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English

References (21)

Electrochemistry in Room-Temperature Ionic Liquids: Potential Windows at Mercury Electrodes journal April 2009
Electrodeposition of rare earth metals Y, Gd, Yb in ionic liquids journal December 2009
Solubility of room-temperature ionic liquid in supercritical CO2 with and without organic compounds journal January 2003
Praseodymium nitrate and neodymium nitrate complexation with organophosphorus reagents in supercritical carbon dioxide solvent journal November 2004
An Electrochemical and Spectroscopic Study of Nd(III) and Pr(III) Coordination in the 1-Butyl-1-methylpyrrolidinium Bis(trifluoromethylsulfonyl)imide Ionic Liquid Containing Chloride Ion journal May 2014
Electrodeposition of a Rare‐Earth Iron Alloy from an Ionic‐Liquid Electrolyte journal April 2019
Electrodeposition of lanthanides from ionic liquids and deep eutectic solvents journal December 2020
A Comparison among Viscosity, Density, Conductivity, and Electrochemical Windows of N - n -Butyl- N -methylpyrrolidinium and Triethyl- n -pentylphosphonium Bis(fluorosulfonyl imide) Ionic Liquids and Their Analogues Containing Bis(trifluoromethylsulfonyl) Imide Anion journal September 2017
Supercritical CO 2 /Ionic Liquid Systems: What Can We Extract from Infrared and Raman Spectra? journal July 2009
Applications of ionic liquids in the chemical industry journal January 2008
Water Interplays during Dysprosium Electrodeposition in Pyrrolidinium Ionic Liquid: Deconvoluting the Pros and Cons for Rare Earth Metallization journal October 2021
Reduction of Light Rare Earths and a Proposed Process for Nd Electrorecovery Based on Ionic Liquids journal August 2018
Electrochemical and Spectroscopic Study of Ce(III) Coordination in the 1-Butyl-3-methylpyrrolidinium Bis(trifluoromethylsulfonyl)imide Ionic Liquid Containing Chloride Ion journal October 2012
Green processing using ionic liquids and CO2 journal May 1999
Electrochemical Behavior of Samarium Species in an Amide-Type Ionic Liquid at Different Temperatures journal January 2019
Water-Facilitated Electrodeposition of Neodymium in a Phosphonium-Based Ionic Liquid journal January 2019
Electrodeposition of metals from supercritical fluids journal September 2009
Electroplating Dysprosium from IL-Based Solutions: A Promising Electrochemical Step to Produce Stronger High Performance Nd(Dy)-Fe-B Sintered Magnets journal January 2015
Extraction of rare earth ions by tri-n-butylphosphate/phosphonium ionic liquids and the feasibility of recovery by direct electrodeposition journal June 2014
Investigating the electrochemical windows of ionic liquids journal January 2013
Electrochemical, thermodynamic, and physical properties of tetradecyltrihexylphosphonium ([P6,6, 6,14]+) and methyl-propyl piperidinium containing ionic liquids and their propylene carbonate solutions journal April 2022

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