Prediction of Densities of Mixed Organic Solutions Containing UO₂(NO₃)₂ and Nitric Acid

Abstract

Our earlier reported work for densities of mixed aqueous solutions was extended for the prediction of density of mixed organic solutions containing tri-n-butyl phosphate, diluent and solvates of the electrolytes- UO₂(NO₃)₂ and HNO₃. Two empirical equations for density of mixed organic solutions have been reported. The first equation predicts density at 298.15 K while the other equation predicts temperature dependency of density in the range of 283.15K to 333.15K. A novel feature of this model is consideration of TBP as a solute, rendering equations valid over the full range of TBP concentrations. Good agreement was observed between the published experimental data and predicted values from model reported in this work.

KEYWORDS:

• density
• temperature dependence
• temperature range 0273–0400K
• organic solutions
• TBP
• n-dodecane
• diluents
• uranium
• nitric acid
• mixture empirical equations
• experimental data
• evaluation