Solvent Extraction and Separation of Vanadium (V) from Multivalent Metal Chloride Solutions by Cyanex 923

2003 ◽  
Vol 21 (4) ◽  
pp. 573-589 ◽  
Author(s):  
P. N. Remya ◽  
J. Saji ◽  
M. L. P. Reddy
Keyword(s):  
Solvent Extraction ◽  
Metal Chloride ◽  
Chloride Solutions ◽  
Extraction And Separation ◽  
Cyanex 923 ◽  
Multivalent Metal

scholarly journals Extraction and separation of U(VI) and Th(IV) from hydrobromic acid media using Cyanex-923 extractant

2010 ◽  
Vol 75 (11) ◽  
pp. 1549-1557 ◽  
Author(s):  
Snehal Ghag ◽  
Suresh Pawar
Keyword(s):  
Solvent Extraction ◽  
Metal Ions ◽  
Organic Phase ◽  
Phosphine Oxide ◽  
Hydrobromic Acid ◽  
Analysis Method ◽  
Acid Media ◽  
Extraction And Separation ◽  
Slope Analysis ◽  
Cyanex 923

A systematic study of the solvent extraction of uranium(VI) and thorium(IV) from hydrobromic acid media was performed using the neutral phosphine oxide extractant Cyanex-923 in toluene. These metal ions were found to be quantitatively extracted with Cyanex-923 in toluene in the acidity range 5x10-5-1x10-4 M and 5x10-5-5x10-3 M, respectively, and they are stripped from the organic phase with 7.0 M HClO4 and 2.0- 4.0 M HCl, respectively. The effect of the equilibrium period, diluents, diverse ions and stripping agent on the extraction of U(VI) and Th(IV) was studied. The stoichiometry of the extracted species of these metal ions was determined based on the slope analysis method. The extraction reactions proceed by solvation and their probable extracted species found in the organic phase were UO2Br2?2Cyanex-923 and ThBr4?2Cyanex-923. Based on these results, a sequential procedure for their separation from each other was developed.

Solvent Extraction of Zinc from Acidic Calcium Chloride Solutions by Cyanex 923

2000 ◽  
Vol 2000 (4) ◽  
pp. 188-189 ◽  
Author(s):  
Susana Martínez ◽  
Francisco José Alguacil
Keyword(s):  
Experimental Data ◽  
Solvent Extraction ◽  
Calcium Chloride ◽  
Phosphine Oxide ◽  
Zinc Chloride ◽  
Chloride Ions ◽  
Extraction Mechanism ◽  
Chloride Solutions ◽  
Slope Analysis ◽  
Cyanex 923

The reaction of zinc chloride with Cyanex 923 (phosphine oxide) in Solvesso 100 has been studied from acidic calcium chloride solutions. The distribution coeffient of zinc is independent of equilibrium pH, thus, suggesting a solvation extraction mechanism. Experimental data indicate that the reaction is exothermic (Δ H° = −55.2 kJmol−1). Slope analysis for the system at various Cyanex 923 concentrations reveals the formation in the loaded organic phases of species which probable 1:2 (Zn: Cyanex 923) stoichiometries. The stoichiometric factor of water in the extraction reaction was found to be 0, 1 or 2, whereas experimental data indicated that two chloride ions are involved for each metal extracted.

Solvent extraction of titanium(IV) from acidic chloride solutions by Cyanex 923

1999 ◽  
Vol 51 (1) ◽  
pp. 9-18 ◽  
Author(s):  
K. Saji John ◽  
J. Saji ◽  
M.L.P. Reddy ◽  
T.R. Ramamohan ◽  
T.P. Rao
Keyword(s):  
Solvent Extraction ◽  
Chloride Solutions ◽  
Acidic Chloride ◽  
Cyanex 923

Recovery and partitioning of Ir(IV) and Ru(III) from chloride solutions by solvent extraction using Cyanex 923/kerosene

2006 ◽  
Vol 82 (1-2) ◽  
pp. 40-47 ◽  
Author(s):  
C.S. Kedari ◽  
M.T. Coll ◽  
A. Fortuny ◽  
E. Goralska ◽  
A.M. Sastre
Keyword(s):  
Solvent Extraction ◽  
Chloride Solutions ◽  
Cyanex 923
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