Solid-Liquid Equilibria, Excess Molar Volumes, and Deviations in the Molar Refractivity for the Binary Systems of Alamine 304-1 + Decane, Dodecane, or Dodecanol

摘要

Solvent extraction is widely used for the separation of metals from aqueous acid leaching solutions of metal ore. Employing the appropriate solvents and diluents for different metal ores is very important not only for developing appropriate extraction and purification processes but also for recycling the solvent and diluents. Crystallization is an inexpensive recycling process. In this work, therefore, solid—liquid equilibrium (SLE) data for systems containing Alamine 304-1, a commercial amine solvent, were collected at atmospheric pressure. Specifically, the following systems were studied: {Alamine 304-1 + decane}, {Alamine 304-1 + dodecane}, and {Alamine 304-1 + 1-dodecanol}. The experimental data were correlated using the nonrandom-two-liquid (NRTL) model. In addition, the physical properties, excess molar volumes (V~E) and deviations in the molar refractivity (AR) of these binary systems at 298.15 K were reported. The measured V~E and AR data fit the Redlich—Kister equation well.