Poly(ethylene glycol)-based aqueous biphasic systems: effect of temperature on phase equilibria and on partitioning of 1,10-phenanthroline-copper(II) sulphate complex.
Solvent extraction is a proven technology for the selective removal and recovery of metal ions from aqueous solutions: the use of aqueous biphase systems can be attractive for many separation processes. These systems have usually been used previously at temperatures around 25 degrees C; however it is possible that better separations may be achieved at other temperatures: phase diagrams have been determined for a polyethylene glycol (AMW 3350)-ammonium sulphate-water system over the temperature range 269-343 K and the effect of temperature on partitioning has been determined for 1,10-phenanthroline-copper(II) sulphate complex.
Fontana
D
D
ENEA CR Casaccia, Innovation Department, INN NUMA CHIM, Rome, Italy. dfontana@axptris.trisaia.enea.it
Ricci
G
G
D010618:Phenanthrolines / Q000737:chemistry*; D011092:Polyethylene Glycols / Q000737:chemistry*; D013696:Temperature; D014867:Water / Q000737:chemistry
D010618:Phenanthrolines; D014867:Water; C014741:bis(1,10-phenanthroline)copper(2+) ion; D011092:Polyethylene Glycols