Suitable Experimentation-Modeling Binomial to Design the Extraction of an Alkanol with Water in Aqueous Ternary Solutions of Ester-Akanol

This work presents an investigation on phase equilibria in partially miscible systems comprised of water, esters, and alkanols. Experimental liquid–liquid (LLE) were determined for ternaries water+H2u–1Cu–1CO2CvH2v+1+CwH2w+1(OH) (u = 3,4; v 2,3; w 1–4) at 298.15 K the four corresponding water+ester binaries, temperature interval T [283–328] K. The results reveal a complex behavior ternary LLE. ester barely dissolves aqueous phase, even presence alkanol (xmax,esterII ≈ 0.15). However, organic contains high quantities water when compositions approach plait point (xmax,waterI 0.75). Data modeling was carried out with multiparametric model, obtaining acceptable correlation maximum deviation sx 0.031 system water(1)+propyl butanoate(2)+propan-1-ol(3). Estimations COSMO-RS UNIFAC differed from experimental values all cases, especially containing propan-1-ol, since both models predict nonreal immiscibility binary water+propan-1-ol. Therefore, simulation extractive process using not adequate.