Measurement and Correlation of Liquid–Liquid Equilibrium Data for Ternary Systems of Water + Furfuryl Alcohol + (1-Pentanol and n-Propyl Acetate) at Different Temperatures

Abstract

Liquid–liquid equilibrium (LLE) data for the ternary mixture of water + furfuryl alcohol (FAL) + {1-pentanol and n-propyl acetate} was measured in 101.3 kPa at 303.2, 313.2, and 323.2 K. The separation factor (S) and distribution coefficient (D) appraised the utility of extracting FAL from water. The experimental data were accurately correlated by the nonrandom two-liquid (NRTL) and the universal quasi-chemical (UNIQUAC) models with the root-mean-square deviation (RMSD%) values. The values are less than 0.37%. The relevant binary interaction parameters were calculated. The GUI-MATLAB was used to check the consistency of the calculated binary interaction parameters and liquid–liquid equilibrium data. The σ-profiles can analyze the molecular interaction, which further confirms the accuracy of the experimental results. The excellent performance of 1-pentanol and n-propyl acetate in the extraction of FAL from an aqueous solution was shown.

Liquid–Liquid Equilibrium Study of Ternary Systems of (Water + Furfuryl Alcohol + Solvents) at 303.2, 313.2, and 323.2 K

“…Distribution coefficient of FAL increased with the organic phase mass. (red ■) TCM 303.2 K; (red ●) TCM 313.2 K; (red ▲) TCM 323.2 K; (blue ■) MIPK 303.2 K; (blue ●) MIPK 313.2 K; (blue ▲) MIPK 323.2 K; (purple ◆) methylene chloride 298.2 K; (purple ★) isopropyl ether 298.2 K; and (purple ⬢) n -propyl acetate 303.2 K …”

“…In the work of Dong, similar systems with isopropyl ether, methylene chloride, methyl tert-butyl ether, and 4-methyl-2-pentanol as solvents to separate FAL from water were measured at 298.2 K, while isopropyl ether and methylene show better separation ability because of their larger separation factors. In the work of Han, the extraction effect of n -propyl acetate and 1-pentanol at different temperatures was investigated. The results show that n -propyl acetate has a larger separation factor at 303.2 K and a better separation effect.…”

“…exp cal (10) where k, j, i, M, w exp , and w cal are identical to those of eq 8. The values of RMSD and AAD are present in Table 5, which are less than 0.0094 and 0.0066, respectively.…”

“…7 At present, there have been some studies in the literature on the extraction of liquid− liquid equilibrium (LLE) from FAL with certain solvents. Phatanasri et al 8 explored the LLE of water + FAL + ethyl acetate, methyl isobutyl ketone, 2-furaldehyde, or 1-butanol at 298.2 K. Dong et al 9 investigated the LLE data of water + FAL + methyl tert-butyl ether, isopropyl ether, methylene chloride, or 4-methyl-2-pentanol at 298.2 K. Han et al 10 measured the LLE of water + FAL +1-pentanol or n-propyl acetate. To effectively separate FAL and water through liquid−liquid extraction, more research is needed to screen suitable solvents.…”

Experiment and Correlation of Liquid–Liquid Equilibrium Data for Water + 2-Propanol + 1-Octanol or n-Propyl Acetate at 298.2, 308.2, and 318.2 K under 101.3 kPa

“…Analysis Methods. After the two phases were separated, 0.6 μL of samples was taken out from the upper and lower layers and analyzed by gas chromatography (GC6820, Agilent Technologies) 16 with a thermal conductivity detector and a Porapak N column (3 mm × 3 m). The detector and gasification chamber temperature were set at 518.2 K. The initial column oven temperature was 403.2 K, then raised to 493.2 K at a rate of 25 K•min −1 , and held for 3 min.…”