SOLVENT EXTRACTION OF PHOSPHORIC ACID WITH LONG CHAIN TERTIARY AMINES

1986 ◽  
Vol 4 (5) ◽  
pp. 883-905 ◽  
Author(s):  
Stenström Stig ◽  
Wingefors Stig ◽  
Aly Gharib
Keyword(s):  
Solvent Extraction ◽  
Phosphoric Acid ◽  
Tertiary Amines ◽  
Long Chain

scholarly journals The Effect of Sulphuric Acid Concentration on Solvent Extraction of ReO4 - by the Long-Chain Aliphatic Tertiary Amines and Alcohols

2010 ◽  
Vol 5 (1) ◽  
pp. 95-97
Author(s):  
Aleksander G. Kasikov ◽  
Anna M. Petrova
Keyword(s):  
Solvent Extraction ◽  
Anion Exchange ◽  
Sulphuric Acid ◽  
Acid Concentration ◽  
Extraction Process ◽  
Tertiary Amines ◽  
Acidic Solutions ◽  
Wide Range ◽  
Sulphuric Acid Concentration ◽  
Long Chain

The effect of sulphuric acid concentration on solvent extraction of ReO4- by the long-chain aliphatic tertiary amines and alcohols in a wide range of H2SO4 concentrations in initial solutions is discussed. It has been established that the influence of the sulphuric acid concentration on rhenium solvent extraction is largely due to the extraction process mechanism. In the case of the anion-exchange mechanism, ReO4- is best extracted from weakly acidic solutions, whereas when the hydrate-solvate mechanism takes place – from solutions containing 4-7 mole/l H2SO4.

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