Measurement and Correlation of LLE Data for the Ternary System Water+Phosphoric Acid+1-Pentanol at 278.2 K and 288.2 K

Shekarsaraee, Sina; Kazemi, Khadijeh

doi:10.33945/sami/ajca.2020.4.5

Cited by 3 publications

(5 citation statements)

References 22 publications

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“…For the studied systems, a local composition model of UNIQUAC was used to fit the experimental tie-line data. The UNIQUAC structural parameters ( r and q ) for the aromatic esters were estimated by the group contribution method. − The correlated tie-line data for these systems are presented in Table . The same data at T = 298.15 K are shown in Figure a–d, which indicates the validity and reliability of the model.…”

Section: Resultsmentioning

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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Section: Resultsmentioning

confidence: 99%

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

2020

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“…Nevertheless, among various solvent types, primary alcohols offer several advantages of low cost, facile applicability, and rapid separation from the setting . Accordingly, alcohols comprising hydrogen-bond donor and −OH acceptor groups are associated with applied liquids due to dipole–dipole interactions and hydrogen bonding. − …”

Section: Introductionmentioning

confidence: 99%

Liquid–Liquid Equilibrium Studies of Water/Phosphoric Acid/Mesityl Oxide Ternary Systems at Different Temperatures

Shekarsaraee

Shamizad

2021

J. Chem. Eng. Data

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Phase equilibria of the ternary system (water + phosphoric acid + mesityl oxide) were investigated, and experimental tie-line data of liquid–liquid equilibrium were obtained at T = (298.2, 308.2, and 318.2) K and atmospheric pressure. The mass fractions of mesityl oxide and phosphoric acid were determined by high-performance liquid chromatography and acid–base titration, respectively. A limitation for the complete investigation of biphasic regions was observed in the (water + phosphoric acid + mesityl oxide) system, which was not detected in previous aqueous ternary systems containing mesityl oxide and other weak acids. The unsaturated carbon–carbon double bond of mesityl oxide is the cause of this limitation. Distribution coefficients (0.05 up to 0.25) and separation factors (1.05 up to 2.58) were determined over the biphasic area and proved the efficiency of mesityl oxide in the studied range. All the evaluated experimental data of the ternary system were correlated using the Hand equation to confirm the reliability of the endpoints. Temperature increments increased the extraction ability of mesityl oxide. The nonrandom two-liquid activity coefficient model was applied to correlate the measured tie-line points. Binary interaction parameters were obtained in each temperature, and temperature dependence of the parameters was investigated. The root-mean-square deviation values (less than 1% in all correlations) proved the quality of modeling, and the interaction parameters were validated. Biphasic regions were predicted using the obtained interaction parameters where experimental data could not be measured.

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“…Mixtures of chloroform with other solvents (toluene or diethyl ether) were also used to separate ethanol from water. 41,48 To select a proper solvent for the separation process using liquid−liquid extraction, 13 parameters could be considered: separation factor (1), distribution coefficient (2), insolubility of solvent in raffinate (3), recoverability (4), density (5), interfacial tension (6), chemical reactivity (7), viscosity (8), vapor pressure (9), freezing point (10) non-toxicity (11), nonflammability (12), and low cost (13). 49 Chloroform and carbon tetrachloride have 10 options out of 13 (1,3,4,5,6,7,8,10,12,13).…”

Section: Introductionmentioning

confidence: 99%

“…41,48 To select a proper solvent for the separation process using liquid−liquid extraction, 13 parameters could be considered: separation factor (1), distribution coefficient (2), insolubility of solvent in raffinate (3), recoverability (4), density (5), interfacial tension (6), chemical reactivity (7), viscosity (8), vapor pressure (9), freezing point (10) non-toxicity (11), nonflammability (12), and low cost (13). 49 Chloroform and carbon tetrachloride have 10 options out of 13 (1,3,4,5,6,7,8,10,12,13). From an economic point of view, chemical stability is one of the factors that can affect economic efficiency and because both the solvents are chemically stable, they could be recovered hundreds of times.…”

Section: Introductionmentioning

confidence: 99%

“…Because liquid–liquid equilibrium (LLE) is one of the most common methods for purification of orthophosphoric acid (OPA) from water, many researchers have improved the LLE data of OPA aqueous solutions using different organic solvents. − Alcohols, − ,, ethers, − ketones, ,,, esters, ,− ,, and hydrocarbons , were investigated as extractants in ternary systems. Solvent mixtures , were also applied for OPA recovery from its aqueous solutions but hydrocarbon derivates have not been used for investigation of LLE behaviors containing OPA.…”

Section: Introductionmentioning

confidence: 99%

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Phase Equilibrium Data of Ternary Mixtures (Water + Orthophosphoric Acid + Chlorinated Methanes)

Shekarsaraee

Hadinejad

2021

J. Chem. Eng. Data

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In the present study, phase equilibrium data of the systems (water + orthophosphoric acid + chlorinated methanes) were measured in the temperature range of 298.2−318.2 K under ambient conditions. Chloroform and carbon tetrachloride were chosen as chlorinated solvents. Both the systems exhibited a type II phase behavior. The presence of hydrogen atoms in chloroform caused differences in phase behavior, partition coefficients, and solubility of the acid in the studied chlorinated methanes. Solid orthophosphoric acid was dissolved six times more in chloroform than in carbon tetrachloride. The thermodynamic modeling was conducted using the NRTL and UNIQUAC equations. Root mean square deviations were calculated to assess the quality of correlations, and the values were lower than 1% for UNIQUAC and 2% for NRTL models. The binary interaction parameters were optimized, and the temperature dependency of the binary parameters was considered. The performance of the studied solvents was evaluated by calculating the distribution coefficients (0.007 to 0.032 for chloroform and 0.004 to 0.008 for tetrachloromethane as solvents) and separation factors (9.81 to 1.25 for CHCl 3 and 5.67 to 1.70 for CCl 4 solvent systems) over the immiscibility region. Temperature increment had obvious effects on the partition coefficients of chloroform ternary mixtures. The obtained partition coefficients at 298.2 K were eventually regressed using the Catalań linear solvation energy relationship (LSER) model. The LSER modeling proposed that polarizability and dipolarity have large negative and positive effects on the distribution coefficient, while acidity and basicity have small and very small positive effects, respectively. LSER modeling of separation factors suggested polarizability as the strongest positive function and basicity as a negative one.

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Measurement and Correlation of LLE Data for the Ternary System Water+Phosphoric Acid+1-Pentanol at 278.2 K and 288.2 K

Cited by 3 publications

References 22 publications

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

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

Liquid–Liquid Equilibrium Studies of Water/Phosphoric Acid/Mesityl Oxide Ternary Systems at Different Temperatures

Phase Equilibrium Data of Ternary Mixtures (Water + Orthophosphoric Acid + Chlorinated Methanes)

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