Solvent Extraction Separation of La³⁺ and Ba²⁺ using Imidazolium Ionic Liquids and TODGA Extractant

Journal Article · Wed Jun 27 00:00:00 EDT 2012 · Separation Science and Technology

OSTI ID:1079262

Bell, Jason R. ^[1]; Dai, Sheng ^[1]; Luo, Huimin ^[1]

---

1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

We investigated solvent extractions of La³⁺ and Ba²⁺ by N,N,N ,N -tetra(n-octyl)diglycolamide (TODGA) from aqueous solutions in twelve imidazolium-based ionic liquids (ILs), 1-alkyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide / bis(perfluoroethylsulfonyl)imide ([Cnmim][NTf2]/[BETI], n = 2,3, 4, 6, 8, 10). We also found that the corresponding extraction efficiencies were dependent on concentration of TODGA used, the acidity of aqueous phase, alkyl chain length on IL cation, and IL anion as well.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Nuclear Energy (NE)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1079262
• Journal Information: Separation Science and Technology, Vol. 47, Issue 14-15; ISSN 1520-5754
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Solvent extraction
Ionic liquids
TODGA
La3+ / Ba 2+