TY - JOUR ID - 158450 TI - Measurement and Thermodynamic Modeling of LLE Data of Ternary System (Water + Caproic Acid + Undecan-1-ol) at 298.2 K JO - Physical Chemistry Research JA - PCR LA - en SN - 2322-5521 AU - Shekarsaraee, Sina AU - Afraz Looyeh, Aryan AD - Department of Chemistry, University of Guilan, P. O. Box: 41335-19141, Rasht, Iran Y1 - 2022 PY - 2022 VL - 11 IS - 3 SP - 615 EP - 622 KW - Caproic Acid KW - Thermodynamic Modeling KW - Liquid-liquid equilibrium KW - Undecan-1-ol DO - 10.22036/pcr.2022.346604.2118 N2 - In the present study, undecan-1-ol was used as an extractant to remove caproic acid from aqueous phase. Experimental tie-line data of the ternary system (water + caproic acid + undecan-1-ol) were measured at T = 298.2 K and atmospheric pressure. Acid-base and Karl Fisher titrations were applied to determine the mass fractions of the acid and water, respectively. Solvent compositions were computed using mass balance equation. Obtained tie-line data were then correlated by UNQUAC and NRTL thermodynamic models. The values of root mean square deviations (up to 0.4 %) proved that the correlated results of both the models are in great accordance with experimental points. Distribution coefficients of caproic acid (23.2 to 49.4) and separation factors (678 to 904) were calculated over the biphasic region. Both partition factors have high values and confirm high ability of undecan-1-ol for purification of caproic acid. Efficiency of extraction was also calculated for each tie-line and the results were better than 96 %. UR - https://www.physchemres.org/article_158450.html L1 - https://www.physchemres.org/article_158450_27d91c4f0df7003e9e9b9858d0fa25f1.pdf ER -