Experimental study and theoretical simulation of fluid phase equilibrium in the subsystems of quinary system NaBr–KBr–MgBr2–SrBr2–H2O at 298 K

Experiments and Prediction of Solid–Liquid Phase Equilibria in the Quinary System NaBr–KBr–MgBr2–SrBr2–H2O and Its Quaternary Subsystem NaBr–MgBr2–SrBr2–H2O at 308.2 K

“…At present, to make better use of the abundant strontium resources, some solid–liquid phase equilibria of salt-water systems containing strontium and bromide have been studied at different temperatures by our research team. For example, the phase equilibria of the quinary system NaBr–KBr–MgBr 2 –SrBr 2 –H 2 O at 298 K were studied . And the related subsystems of the quinary system NaBr–KBr–MgBr 2 –SrBr 2 –H 2 O have also been explored at various temperatures, such as the quaternary systems NaBr–KBr–SrBr 2 –H 2 O, NaBr–MgBr 2 –SrBr 2 –H 2 O, and KBr–MgBr 2 –SrBr 2 –H 2 O from 273 to 348 K and the ternary systems MgBr 2 –SrBr 2 –H 2 O, NaBr–SrBr 2 –H 2 O, and KBr–SrBr 2 –H 2 O from 273 to 308 K. − …”

“…For example, the phase equilibria of the quinary system NaBr−KBr−MgBr 2 −SrBr 2 − H 2 O at 298 K were studied. 10 And the related subsystems of the quinary system NaBr−KBr−MgBr The study of thermodynamic properties of electrolyte solution, such as activity coefficient, osmotic coefficient, and solubility, plays an important role in chemical production and process development and provides some basic data for them such as separation process development and utilization of brine resources in chemical production. The activity coefficient reflects the deviation between the nonideal solution and ideal solution.…”

“…17 −19,4,7 For the thermodynamic properties of systems containing strontium, Wang and Hu 20 [21][22][23][24]11 In the early stage, our research group has carried out the phase equilibrium study of the system NaBr−MgBr 2 −SrBr 2 −H 2 O at multiple temperatures. 10,11,13 However, the temperature condition at 308.2 K is more suitable for the summer temperature of Sichuan Basin, which can provide theoretical guidance for the extraction and separation of brine. Therefore, we carried out the experiment and prediction research of phase equilibria in the quinary system NaBr−KBr−MgBr 2 −SrBr 2 −H 2 O (saturated with KBr) and its quaternary subsystem NaBr−MgBr 2 − SrBr 2 −H 2 O at 308.2 K on the basis of previous research.…”