Binodal curves and tie line data of the water–propionic acid–iso-butyl acetate at T=(298.2, 308.2, 318.2, and 328.2)K

Ghanadzadeh, H.; Ghanadzadeh, A.; Moein, M.; Shekarsaraee, Sina; Jamshidi, Y.

doi:10.1016/j.tca.2012.04.020

Cited by 10 publications

(9 citation statements)

References 41 publications

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“…Furthermore, the size of the immiscible region changes slightly by increasing temperature from 298.15 to 318.15 K. In other words, the effect of temperature on LLE data for the mixtures is small at the studied temperatures. The results were compared with (water + propanoic acid + 2-methylpropyl ethanoate) ternary system in Figure to verify our data. A similar trend was observed for the system and they are in good agreement.…”

Section: Resultsmentioning

confidence: 70%

“…Propanoic acid is one of the most used organic acids in industry, and its recovery from dilute solutions is very important in the chemical fermentation industry. In order to specify solvents for providing operative extraction, many studies have been performed. − …”

Section: Introductionmentioning

confidence: 99%

“…As continuation of our study on the recovery of propanoic acid from dilute solutions by LLE technique, in this paper 3-methylbutyl acetate (isoamyl acetate) and propan-2-yl acetate were used as good solvents for this purpose, and the results were compared with the literature values for 2-methylpropyl ethanoate . Propanoic acid is self-associated through hydrogen bonding due to hydrophilic group (−COOH). , This group leads to the disruption of the water structure and the formation of a new H-bond in the dilute solutions of propanoic acid. , It seems that the used solvent to extract acid from water should be able to overcome this complex interaction.…”

Section: Introductionmentioning

confidence: 99%

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Phase Equilibrium Study of the Aqueous Solution of Propanoic Acid with Acetates at Different Temperatures

2021

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Ternary phase behavior of water + propanoic acid + 3-methylbutyl acetate and water + propanoic acid + propan-2-yl acetate ternary mixtures including solubility and tie-line data was defined at (298.15 to 318.15) K under the pressure of 83.4 ± 1 kPa. The compositions of tie-line and bimodal curves were obtained by refractive index measurements. The phase diagrams show the type-1 behavior of liquid−liquid equilibrium (LLE). The capability of the solvents for the extraction of propanoic acid from aqueous solutions was determined by distribution coefficients and separation factors. The reliability of the experimental tie-line data was ascertained by Othmer−Tobias and Hand correlation equations. The tie-line data were correlated with nonrandom two-liquid (NRTL) and universal quasi-chemical (UNIQUAC) models. The binary interaction parameters of the models were reported. Excellent agreement was observed between the experimental data and the correlated values.

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Section: Resultsmentioning

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Phase Equilibrium Study of the Aqueous Solution of Propanoic Acid with Acetates at Different Temperatures

2021

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“…The rapid growing required LLE data for the separation of carboxylic acids from water has been highlighted in earlier studies. − Many organic solvents with different functional groups have been tested as extractants for efficient separation operations. − Among the carboxylic acids, valeric acid (VA) and caproic acid (CA) are important chemicals (Figure a) because of their wide industrial applications . These carboxylic acids are mostly applied in the synthesis of esters and lubricants.…”

Section: Introductionmentioning

confidence: 99%

Comparative Evaluation of the Liquid–Liquid Equilibria of the Extraction of Valeric or Caproic Acids from Water by Esters

Gilani

Nasiri-Touli

2020

J. Chem. Eng. Data

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Liquid–liquid equilibrium (LLE) values were determined for the six ternary mixtures composed of water, valeric acid or caproic acid, and esters (cyclohexyl acetate, benzyl acetate, and benzyl benzoate) at 298.2 K and 101.3 kPa. All of the studied mixtures displayed type-2 LLE behavior. The Hand equation was applied in this study to ascertain the reliability of the measured tie line data. The NRTL and UNIQUAC models were used to regress the measured tie line values, and the binary interaction parameters were determined. As a result, influence of the structural characteristics of the esters used in this work on the biphasic region is small. Extraction capacity of the used solvents was achieved using the evaluation of distribution constant (distribution coefficient) and selectivity (separation factor) data. In general, the esters used in this study have relatively high selectivities and appeared to be proper solvents for the extraction of these acids from water.

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“…Recently, there are a few references that reported the LLE for the ternary systems contained isobutyl acetate, such as isobutyl acetate + water + propionic acid, 5 isobutyl acetate + water + methacrylamide, 6 and isobutyl acetate + water + acetic acid. 7 Also, the LLE phase behavior for the system isopropyl acetate + ethanol + water 8 was studied for the separation of thioglycolic acid.…”

Section: Introductionmentioning

confidence: 99%

Measurement and Correlation of Phase Equilibria for Isobutyl Acetate + {Ethanol or Methanol} + Water at 303.15 and 323.15 K

Chen

Gao

et al. 2017

J. Chem. Eng. Data

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The phase equilibrium data for the ternary systems isobutyl acetate + {ethanol or methanol} + water were determined at temperatures of 303.15 and 323.15 K, and pressure of 101.3 kPa. Both Hand and Bachman methods were used to evaluate the validity of the experimental data in the present work. In addition, the nonrandom two-liquid (NRTL) and universal quasichemical (UNIQUAC) models were applied to fit the experimental tie-line data, and the binary interaction parameters of the thermodynamic models were fitted. The root-mean-square devation values obtained for the NRTL and UNIQUAC activity coefficient models are less than 0.0081, which indicates that the correlated results agree with the experimental data. Moreover, the distribution coefficients and selectivities were determined and discussed.

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Binodal curves and tie line data of the water–propionic acid–iso-butyl acetate at T=(298.2, 308.2, 318.2, and 328.2)K

Cited by 10 publications

References 41 publications

Phase Equilibrium Study of the Aqueous Solution of Propanoic Acid with Acetates at Different Temperatures

Phase Equilibrium Study of the Aqueous Solution of Propanoic Acid with Acetates at Different Temperatures

Comparative Evaluation of the Liquid–Liquid Equilibria of the Extraction of Valeric or Caproic Acids from Water by Esters

Measurement and Correlation of Phase Equilibria for Isobutyl Acetate + {Ethanol or Methanol} + Water at 303.15 and 323.15 K

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