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Potential separation of zirconium and some lanthanides of the nuclear and industrial interest from zircon mineral using cation exchanger resin.
- Source :
- Journal of Dispersion Science & Technology; 2022, Vol. 43 Issue 11, p1642-1651, 10p, 1 Diagram, 7 Charts, 8 Graphs
- Publication Year :
- 2022
-
Abstract
- The present study is conducted for developing separation of some elements of nuclear interest from zirconium-concentrate explored from Egyptian zircon mineral, using certain cationic exchangers. The main results revealed that Amberlite IR-120 is more efficient than Chelex-100 for separating La and Zr in 0.01 mol. L<superscript>−1</superscript> (various acid, carbonate) from single or binary solution with separation factor (SF) of ∼2.1 × 10<superscript>3</superscript> (HCl) > 239 (HNO<subscript>3</subscript>) >56 (K<subscript>2</subscript>CO<subscript>3</subscript>) > 17.5 (HClO<subscript>4</subscript>). Separation of La and Zr was largely influenced by acid concentration, equilibration period, and temperature. Thermodynamically, values of Δ G o , Δ H o and Δ S o indicated that retention of the metal ions is disordered and endothermic nature. In a column application, Zr is separately eluted without La; with recoveries reached to 98% for Zr and 50% to 67% for La. The larger negativity of free energy of hydration of Zr (−6950 KJ/mol) that of La (−3418 KJ/mol) confirm that Zr exists as a non-sorptive species; meanwhile La forms adsorptive species onto the column bed resin. As a result, this study can be extended in the future to help exploration of the strategic elements (e.g., Zr, Hf, lanthanides) from their minerals in Egypt. Moreover, developed procedure by Amberlite IR-120 resin can be considered as highly efficient and promising for separation and purification of tri-valence lanthanides (e.g., La<superscript>3+</superscript>) and/or actinides (e.g., Am<superscript>3+</superscript>) from tetra-valence metal ions such as Zr<superscript>4+</superscript> and Hf<superscript>4+</superscript> or their homologous as Ce<superscript>4+</superscript>, Th<superscript>4+</superscript> and Np<superscript>4+</superscript>. [ABSTRACT FROM AUTHOR]
- Subjects :
- ZIRCONIUM
RARE earth metals
ZIRCON
MINERALS
METAL ions
COLUMNS
Subjects
Details
- Language :
- English
- ISSN :
- 01932691
- Volume :
- 43
- Issue :
- 11
- Database :
- Complementary Index
- Journal :
- Journal of Dispersion Science & Technology
- Publication Type :
- Academic Journal
- Accession number :
- 158879484
- Full Text :
- https://doi.org/10.1080/01932691.2021.1878039