The study of phase behavior of aqueous 1-propanol/2-propanol/2-butanol/2-methyl-2-propanol systems in the presence of disodium tartrate or disodium succinate at T=298.15K

Liquid–Liquid Equilibrium Data of the Ternary Systems Containing 1-Propanol/2-Propanol + Dipotassium Tartrate/Potassium Sodium Tartrate + Water at T = 298.15 K

“…According to the SD values reported in Table , it can be concluded that the performance of eq in fitting the tie-line data is very good. Again it can be seen that eq with only two parameters has a good performance in representing tie-lines for alcohol + salt + water systems considered in this work and other similar systems studied before. ,, …”

“…The binodal data for the 1-propanol/2-propanol + dipotassium tartrate + water and 1-propanol + potassium sodium tartrate + water systems were obtained as listed in Table . Detection of turbidity for 2-propanol + potassium sodium tartrate +water system was impossible; therefore, using the tie-line data the binodal curve has been determined as we have done for 2-propanol + disodium succinate + water system previously . Moreover, the tie-line data for these investigated systems are reported in Table .…”

“…It was found that the Setschenow-type equation with only two parameters usually has a good performance in the correlation of tie-line data for polymer + salt + water , and alcohol + salt + water ,, systems. Therefore, in this work, we decided to use the Setschenow-type equation to correlate the tie-line data of these investigated systems.…”

“…The procedure for determination of the tie-lines has also been described previously . The vessels containing appropriate amounts of alcohol, salt, and water were placed in the thermostat (JULABO model MB, Germany) at T = 298.15 K at least 48 h to separate into two clear phases.…”

“…For recycling of the used salts, Greve et al presented a method using ATPS’s containing salts and a suitable aliphatic alcohol . In recent years, following Greve et al, liquid–liquid equilibria (LLE) of some aliphatic alcohol + salt + water systems have been studied. − Tartrate salts are biodegradable and nontoxic and could be discharged into biological wastewater treatment plants, but some types of these salts are valuable and they can be recycled. For instance, potassium sodium tartrate has been commonly used in protein crystallization, − medicine, electronics, and industry …”