(Liquid+liquid) equilibria of (water+propionic acid+diethyl phthalate) at several temperatures

Çehreli, Süheyla; Özmen, Dilek; Tatlı, Beşir

doi:10.1016/j.jct.2005.02.005

Cited by 26 publications

(8 citation statements)

References 10 publications

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“…The LLE apparatus and experimental procedure were previously described in detail [14,15]. Tie-line data determination was performed in an equilibrium cell equipped with a magnetic stirrer and isothermal fluid jacketed beaker to keep the temperature of the stock solution constant.…”

Section: Apparatus and Proceduresmentioning

confidence: 99%

Phase equilibria of water+1-propanol+solvent (n-amyl acetate, cyclohexanol, and cyclohexyl acetate) at T=298.2K

Özmen

Çehreli

2007

Fluid Phase Equilibria

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Section: Apparatus and Proceduresmentioning

confidence: 99%

Phase equilibria of water+1-propanol+solvent (n-amyl acetate, cyclohexanol, and cyclohexyl acetate) at T=298.2K

Özmen

Çehreli

2007

Fluid Phase Equilibria

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“…Because of the lower energy requirement and costs, liquid–liquid extraction is considered as rather an effective and suitable method for carboxcylic acid recovery. For an efficient recycling of these compounds, many different solvents have been used so far by different researchers. − Ternary liquid–liquid equilibrium (LLE) data of carboxylic acids for aqueous solutions with organic solvents are of great importance in terms of both academic research and industrial applications. LLE data constitute a critical point in the design and improvement of various separation operations or chemical processes.…”

Section: Introductionmentioning

confidence: 99%

Correlation of Experimental Liquid–Liquid Equilibrium Data for Ternary Systems Using NRTL and GMDH-Type Neural Network

Bekri

Özmen

2017

J. Chem. Eng. Data

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In this work, liquid–liquid equilibrium (LLE) data for the ternary systems (water + propionic acid + solvent) were experimentally obtained at atmospheric pressure and 298.2 K. The ternary systems show type-1 behavior of LLE. Cyclopentane, cyclopentanol, 2-octanone, and dibutyl maleate were chosen as solvent and it has been noted that there are no data in the literature on these ternary systems. The consistency of the experimental tie-line data was checked using the Hand and Othmer-Tobias correlation equations. A comparison of the extracting capabilities of the solvent was made with respect to the distribution coefficients and separation factors. The correlation of the experimental tie-line data was confirmed by the NRTL thermodynamic model. A Group Method of Data Handling (GMDH)-type neural network (NN) was also used to correlate the experimental tie-lines. It is shown that the results of the both models cohere with the experimental values.

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“…The purity of the chemicals was also inspected based on the refractive index and density measurements. The measured refractive indices and densities of the chemicals along with their reported data − are given in Table . The esteric compounds, benzyl acetate, benzyl benzoate, dimethyl phthalate, and diethyl phthalate (Figure ), were dried over molecular sieves (Merck, type 4 Å) before use.…”

Section: Methodsmentioning

confidence: 99%

Measurement and Modeling of Liquid–Liquid Equilibria for Water–Phosphoric Acid–Aromatic Esters

2020

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Ternary liquid−liquid equilibrium (LLE) data were measured for the {water + phosphoric acid + aromatic esters (benzyl acetate, benzyl benzoate, dimethyl phthalate, and diethyl phthalate)} systems at T = 298.2 K and P = 101.3 kPa. Moreover, to investigate the effect of temperature on LLE behavior, the LLE measurement was performed for a ternary system of (water + phosphoric acid + benzyl acetate) at three different temperatures (298.2, 308.2, and 318.2) K and the above pressure as well. Among the studied ternary systems, only the phase diagram for the system containing benzyl acetate clearly displays type-1 LLE behavior. The quality of the tie-line data was checked through the Othmer−Tobias correlation equation. The experimental data were correlated using the UNIQUAC model. For all of the systems studied, the separation factors are larger than unity, which means that the chosen aromatic esters might have the potential to extract phosphoric acid from water. As the solubility of the acid in benzyl benzoate is poor and it might be hydrolyzed in water after having been rested for a while, it is not a suitable solvent in the recovery of the acid from water.

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(Liquid+liquid) equilibria of (water+propionic acid+diethyl phthalate) at several temperatures

Cited by 26 publications

References 10 publications

Phase equilibria of water+1-propanol+solvent (n-amyl acetate, cyclohexanol, and cyclohexyl acetate) at T=298.2K

Phase equilibria of water+1-propanol+solvent (n-amyl acetate, cyclohexanol, and cyclohexyl acetate) at T=298.2K

Correlation of Experimental Liquid–Liquid Equilibrium Data for Ternary Systems Using NRTL and GMDH-Type Neural Network

Measurement and Modeling of Liquid–Liquid Equilibria for Water–Phosphoric Acid–Aromatic Esters

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