Przemysl Chemiczny, Vol.87, No.2, 102-104, 2008
Effect of the ion strength modificator on extraction equilibrium of Ni(II) and Co(II) ions with di(2-ethylhexyl)phosphoric acid
Ni(II) and Co(II) ions were extd. from aq. solns. of their sulfates with di(2-ethylhexyl)phosphoric acid extrahent in presence of Na2SO4 as ion strength modificator. Kerosene (Exxsol D 229/230) and PhMe were used as org. solvents. The extn. yields reached 40% and were higher when kerosene was used as a solvent. The addn. of Na2SO4 resulted in a decrease in extn. yield by about 20%. The metal partition coeffs. were higher for kerosene than PhMe.