Phase Equilibrium and Thermodynamic Model for the Na⁺//Cl^–-SO₄^2–-HPO₄^2–-H₂O System

Abstract

After the NaClO solution was used to purify acetylene gas, the solution contained significant amounts of NaCl, Na 2 SO 4 , and Na 2 HPO 4 . The phase equilibrium data is the most important basic information for recovering sodium salts. In this study, the solubilities and dry-salt phase diagram for the system