Phase diagrams for the aqueous solutions of butyric acid with cyclohexane at different temperatures: Experimental and correlated data

Ghanadzadeh, H.; Ghanadzadeh, A.; Asgharzadeh, S.; Dastmoozeh, N.

doi:10.1016/j.tca.2011.05.017

Cited by 17 publications

(3 citation statements)

References 35 publications

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“…Extraction is generally considered as a feasible way of separating butyric acid from aqueous solutions due to its less energy consumption . Liquid–liquid equilibrium (LLE) data are useful in extraction processes because they can provide effective information for the optimization or excogitation of separation. − During the past time, heavy alcohols or alkanes were adopted as extraction agents in the separation of butyric acid from aqueous solutions, and the LLE data were measured and reported in literature. − However, considering the fact that there is usually a certain amount of n -butanol and butanal in the oxidized mixture, the extraction process of butyric acid from aqueous solutions includes the multicomponent liquid–liquid equilibrium (water, butyric acid, butanal, n -butanol, and so on). Moreover, the ternary LLE data can be used as the necessary basic data in investigating multicomponent liquid–liquid equilibrium, and there are generally two possible ternary systems (water + butyric acid + butanal, water + butyric acid + n -butanol) in the extraction process of butyric acid from the oxidized mixture.…”

Section: Introductionmentioning

confidence: 99%

Liquid–Liquid Equilibrium Data of Water + Butyric Acid + {Butanal or n-Butanol} Ternary Systems at 293.15, 308.15, and 323.15 K

Zhao

et al. 2017

J. Chem. Eng. Data

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Liquid–liquid equilibrium (LLE) data of water + butyric acid + {butanal or n-butanol} ternary systems were determined at T = 293.15, 308.15, and 323.15 K and p = 0.1 MPa. The ternary systems investigated display Type I behavior of LLE. Nonrandom two-liquid (NRTL) and universal quasichemical (UNIQUAC) activity coefficient models were applied here to fit the experimental results, and the root-mean-square deviations (RMSD) between experimental data and calculated ones were considered in the calculation. The results indicated that the LLE data were well-fitted with both models, in which the RMSD were less than 0.0124. Moreover, solute and diluent compositions in each equilibrium phase were used to calculate the distribution coefficient (D) and the selectivity (S).

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Section: Introductionmentioning

confidence: 99%

Liquid–Liquid Equilibrium Data of Water + Butyric Acid + {Butanal or n-Butanol} Ternary Systems at 293.15, 308.15, and 323.15 K

Zhao

et al. 2017

J. Chem. Eng. Data

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“…All measurements were taken at least three times, and the averages of the results are reported. All of the methods and experiments used in this study are similar in our previous publications. − Figure shows the main parts of the LLE process.…”

Section: Methodsmentioning

confidence: 99%

Experimental Data of Citric Acid Extraction from Aqueous Solution with 1-Decanol by Using Liquid–Liquid Equilibrium

et al. 2018

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In this study, experimental tie-line data for the ternary system containing water, citric acid, and 1-decanol were measured at various temperatures (298.2, 308.2, 318.2, and 328.2 K) and atmospheric pressure (101.3 ± 0.4 kPa). The reliability and consistency of the liquid−liquid equilibrium experimental data were evaluated by the Othmer−Tobias and Hand equations. The distribution coefficients and separation factor of this system for solvent capability were calculated. The maximum of separation factor for 1-decanol as solvent was obtained as 4.25 at 298.2 K and decreases with increasing temperature and citric acid concentration. Finally, by using the genetic algorithm method, interaction parameters of the NRTL thermodynamic model were measured for these experimental data. The values of the parameters of this model were evaluated with the root-mean-square deviation (rmsd) method. The average rmsd value between the experimental and calculated mass fraction was 0.1984% for the NRTL model. The rmsd values demonstrate that the NRTL model is suitable for description of phase behavior and can be applied to this system.

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“…Up to now, important LLE data have been reported on the LLE measurements and the extraction of BA from aqueous solutions [12][13][14][15][16][17][18]. As far as the authors are aware, hydrocarbons [14][15][16], heavy alcohols [17][18][19], esters [20][21][22][23][24][25] aliphatic amines [26,27] and ketones [28] have been mainly used in the recovery of the acid from water. In the past, tie-line data for the ternary system consisting of water, BA, and an aromatic hydrocarbon (toluene) have been reported by Leung and Badakhshan [14] at various temperatures.…”

Section: Introductionmentioning

confidence: 99%

(Liquid+liquid) equilibria of aqueous solutions of butyric acid with n-heptane and toluene at T=(298.2, 308.2, and 318.2)K

Ghanadzadeh

Gilani

Janbaz

2013

The Journal of Chemical Thermodynamics

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Phase diagrams for the aqueous solutions of butyric acid with cyclohexane at different temperatures: Experimental and correlated data

Cited by 17 publications

References 35 publications

Liquid–Liquid Equilibrium Data of Water + Butyric Acid + {Butanal or n-Butanol} Ternary Systems at 293.15, 308.15, and 323.15 K

Liquid–Liquid Equilibrium Data of Water + Butyric Acid + {Butanal or n-Butanol} Ternary Systems at 293.15, 308.15, and 323.15 K

Experimental Data of Citric Acid Extraction from Aqueous Solution with 1-Decanol by Using Liquid–Liquid Equilibrium

(Liquid+liquid) equilibria of aqueous solutions of butyric acid with n-heptane and toluene at T=(298.2, 308.2, and 318.2)K

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