Separation of rhenium(VII), molybdenum(VI), and vanadium(V) from hydrochloric acid solution by solvent extraction with TBP

2017 ◽  
Vol 20 (4) ◽  
pp. 224-230 ◽  
Author(s):  
Hoai Thanh Truong ◽  
Man Seung Lee
Keyword(s):  
Solvent Extraction ◽  
Hydrochloric Acid ◽  
Acid Solution ◽  
Hydrochloric Acid Solution

Solvent extraction of iron(III) from hydrochloric acid solution by sulphoxides and their mixtures

1977 ◽  
Vol 30 (10) ◽  
pp. 2297
Author(s):  
BB Misra ◽  
SR Mohanty
Keyword(s):  
Solvent Extraction ◽  
Hydrochloric Acid ◽  
Acid Solution ◽  
Acid Concentration ◽  
Hydrochloric Acid Solution ◽  
Tributyl Phosphate ◽  
Metal Ion ◽  
Extractant Concentration ◽  
The Individual

The extraction of iron(III) from hydrochloric acid solution by the series of sulphoxides (R2SO) from dipentyl to didecyl sulphoxide in 1,1,2-trichloroethane has been studied. At a given strength of the extractant, extraction increases initially with increase in the acid concentration to a maximum at 8 M and decreases thereafter. Increase in H+ at constant Cl- strength or increase in Cl- at a given H+ increases the extraction. Under otherwise identical conditions, extraction increases with increase in the extractant concentration. The extracted species would appear to be HFeCl4,2R2SO. A mixture of two sulphoxides or of a sulphoxide and tributyl phosphate extracts the metal ion more than the sum of extractions due to the individual components.

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