Naslov
Liquid-Liquid Equilibria in Two Systems Comprising Propionic Acid, Water and Organic Solvent

Autori
Rogošić, Marko ; Dimić, Lana ; Veljačić, Lana

Izvornik
Jubilee Annual 2017-2018 of the Croatian Academy of Engineering (1332-3482) 2018 (2018), 2018; 381-400

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Liquid-liquid equilibria, propionic acid, n-butyl acetate, dimethyl adipate

Sažetak
Liquid-liquid phase equilibria (LLE) in the systems H2O(1) – n-butyl acetate(2) – propionic acid(3) at 35°C and H2O(1) – dimethyl adipate(2) – propionic acid(3) at 25°C was experimentally determined with a combination of turbidimetric titration and refractometry methods. Experimental binodal curves were modeled with Hlavatý equation and tie lines with Othmer-Tobias equation to provide an excellent agreement with the data. UNIFAC LLE model was not found suitable for the prediction of LLE in the systems studied. NRTL and UNIQUAC model parameters were determined as well. The correlation was found fair, but much worse than that obtained by the empirical approach of Hlavatý and Othmer-Tobias.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA