Published June 2012
| Version v1
Journal article
Extraction of europium by sodium oleate/pentanol/heptane/NaCl microemulsion system
- 1. Key Laboratory of Special Functional Aggregated Materials of Education Ministry, School of Chemistry and Chemical Engineering, Shandong University, Jinan (China)
- 2. National Engineering Technology Research Center for Colloidal Materials, Shandong University, Jinan (China)
Description
The extraction of europium to a W/O microemulsion with an anionic surfactant was studied. In the sodium oleate (NaOL)/pentanol/heptane/NaCl system, the influence of aqueous-microemulsion ratio, concentration of NaOL, extraction temperature, concentration of cosurfactant, pH and salting-out agent on the extraction yield were investigated. Europium was probably extracted into the microemulsion phase in the form of Eu(OL)2Cl, and the extraction yield (E%) was above 99% when R = 8. The enthalpy and entropy of Eu(III) extraction were calculated to be -12.18 kJ/mol and -61.41 J/(mol K), respectively. The back-extraction is conducted by hydrochloric acid (0.8 mol/L), which provided better back-extraction yields (95.15%). (author)
Additional details
Publishing Information
- Journal Title
- Journal of Radioanalytical and Nuclear Chemistry
- Journal Volume
- 292
- Journal Issue
- 3
- Journal Page Range
- p. 1093-1098
- ISSN
- 0236-5731
- CODEN
- JRNCDM
INIS
- Country of Publication
- Hungary
- Country of Input or Organization
- Hungary
- INIS RN
- 43051591
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- CHINESE ORGANIZATIONS; EUROPIUM; EXTRACTION; MICROEMULSIONS; SODIUM
- Descriptors DEC
- ALKALI METALS; COLLOIDS; DISPERSIONS; ELEMENTS; EMULSIONS; METALS; NATIONAL ORGANIZATIONS; RARE EARTHS; SEPARATION PROCESSES
Optional Information
- Notes
- 21 refs.