Solid-liquid equilibria in concentrated aqueous salt solutions—systems with a common ion

✍ Scribed by Ricardo Vega; Edward W. Funk

• Publisher: Elsevier Science
• Year: 1974
• Tongue: English
• Weight: 942 KB
• Volume: 15
• Category: Article
• ISSN: 0011-9164
• DOI: 10.1016/s0011-9164(00)82084-6

✦ Synopsis

Parameters tire given for the prediction of solid-liquid equilibria in the aqueous system containing Na', K -. MgC &. N03-, Cl-, SO,-from O-50°C. -mole fraction of salt i calculated as though the salt did not dissociate -mole fraction of salt i at saturation in binary system -fraction of tota salt in solution existing as i -mean ionic activity coefficient -activity coefficient of salt i alone in solution (see Eq. 4) -activity coefficient of salt i in multicomponent solution -activity coetficient of water in solution with salt i activity coefficient of \ater in ternary solution of salts i and j -chemical potential ISTROIiUCTlON Solid-liquid equilibrium data for aqueous salt solutions are necessary for the design of crystaihzation processes and equipment for the treatment of sea \vater and metallurgical \astes. There are numerous solid-liquid equilibrium data (I.?) for binary and ternary aqueous salt systems. However. there are few data for the multicomponent systems of industrial interest. The six-component aqueous salt system containing the ions Na'. K', Mg'-. NO;.CI-,andSO;-'- f' d IS o In ustrial interest in the production of commercial salts. This is the basic system considered in the production of Chilean nitrate. Van3 Hoff (3) began the experimental study of the solid-liquid equihbria in this system and numerous \orkers (4, 5, 6) have continued the study. Nevertheless,