Liquid–Liquid Equilibria for the System Water + 4-Methylpentan-2-one + Acetic Acid at Several Temperatures

Saien, Javad; Daliri, Shabnam; Norouzi, Mahdi

doi:10.1021/je3006166

Cited by 7 publications

(8 citation statements)

References 21 publications

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“…For example Saien and Daliri [46] who have used a cumene-isobutyric acid-water and Saien et al [47] who have used (4-methylpentan-2-one)-acetic acid-water have found that the distribution coefficients increased as temperature increased by 3.02%/°C and 1.84%/°C respectively, which are comparable to the results obtained in this study. Table 4 3.…”

Section: Distribution Coefficientssupporting

confidence: 88%

Removal of estrone (E1), 17β-estradiol (E2), and 17α-ethinylestradiol (EE2) from wastewater by liquid–liquid extraction

Fredj

Nobbs

Tizaoui

et al. 2015

Chemical Engineering Journal

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With the recent wide spread concerns of the environmental and public health effects of endocrine disrupting chemicals (EDCs), it is becoming important to develop new techniques to remove these substances from wastewater. EDCs find their way to the environment mainly via effluents from WWTPs. They are often cited as moderately hydrophobic, hence they have tendency to distribute to organic solvents and can then be removed using liquid-liquid extraction (LLE) techniques. However, despite being a mature chemical engineering unit operation, LLE has not been studied for the removal of EDCs in water. This study investigated the removal of three EDCs of concerns including estrone (E1), 17β-estradiol (E2), and 17α-ethinylestradiol (EE2) using decamethylcyclopentasiloxane (D5) as an extraction solvent in three water matrix types (Milli-Q, tap water, and a secondary treated wastewater). The study showed that all three EDCs were distributed to D5 but at varying distribution coefficients: K E1 = 2.66, K E2 = 0.61 and K EE2 = 1.67 ±5% at pH 6 and 20 o C. Due to the high pKa values of the three EDCs, pH had no significant effect on K EDCs up to about pH 9.5 but higher pHs reduced the distribution ratios up to almost zero at pH 12. Van't Hoff Equation described the effect of temperature on K EDCs and showed that the process was endothermic. The overall estrogenic potency of the three EDCs in mixtures was quantified with an E2 equivalent potency, which was found to distribute well into the solvent at a K E2EQ 2 = 1.43. The study suggests that LLE is an effective method to remove estrogenic potency of wastewater.

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Section: Distribution Coefficientssupporting

confidence: 88%

Removal of estrone (E1), 17β-estradiol (E2), and 17α-ethinylestradiol (EE2) from wastewater by liquid–liquid extraction

Fredj

Nobbs

Tizaoui

et al. 2015

Chemical Engineering Journal

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“…The experimental tie-line data were correlated by using the Aspen Plus (Version 8.4) data regression tool for both the NRTL and the UNIQUAC models. This software employs an objective function, called “Britt-Luecke”, to find model parameters . The obtained NRTL and UNIQUAC coefficients of the equations for binary interaction parameters in this work are listed in Table .…”

Section: Resultsmentioning

confidence: 99%

“…This software employs an objective function, called "Britt-Luecke", to find model parameters. 31 The obtained NRTL and UNIQUAC coefficients of the equations for binary interaction parameters in this work are listed in Table 5.…”

Section: Measurementsmentioning

confidence: 99%

Liquid–Liquid Equilibrium of the Ternary System of Water + Phenol + (Propan-2-yl) Benzene at Several Temperatures

Saien

Asrami

2017

J. Chem. Eng. Data

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Liquid–liquid equilibrium (LLE) data for the ternary chemical system of {water + phenol + (propan-2-yl) benzene (cumene)} were presented at temperatures of 293.2, 298.2, and 308.2 K and under the ambient pressure of 81.5 kPa. Experiments were performed based on the cloud point titration method and refractive index measurements. Results show that the phenol solubility in cumene is significantly higher than in water especially at higher phenol concentrations. The phenol distribution coefficient and separation factor were obtained within 1.490–3.418 and 82.06–300.24, respectively. The capability of cumene, as a solvent to extract phenol from aqueous solutions, particularly for low level phenol concentrations, was revealed. The consistency of tie line data was sufficiently assessed by the Othmer–Tobias and Bachman equations. Meanwhile, the well-known NRTL and UNIQUAC thermodynamic models were employed to reproduce the experimental data and obtaining the binary interaction parameters. The appropriate low value root-mean-square deviations confirm the good agreement between experimental data and the model correlated values.

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“…In case of acetic acid, MIBK has been studied earlier by Saien and TAA by Fahim and Al-Muhtaseb . Their measured data can be used to calculate distribution coefficient and selectivity of the solvent for acetic acid.…”

Section: Resultsmentioning

confidence: 99%

“…In case of acetic acid, MIBK has been studied earlier by Saien 23 and TAA by Fahim and Al-Muhtaseb. 24 Their measured 6).…”

Section: ■ Introductionmentioning

confidence: 99%

Quaternary, Ternary and Binary LLE Measurements for 2-Methoxy-2-methylbutane + Furfural + Acetic Acid + Water at Temperatures between 298 and 341 K

et al. 2016

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Measured quaternary and ternary liquid–liquid equilibrium for 2-methoxy-2-methylbutane (tert-amyl methyl ether, TAME) with furfural, acetic acid, and water are presented in the temperature range between 298 and 341 K. In addition, binary pairs for TAME + water and furfural + water were measured in the range between 298 and 341 K. Results were modeled with UNIQUAC-HOC (Hayden–O’Connell) activity coefficient model and corresponding binary interaction parameters are presented along with measurement data. Solvent suitability for industrial use was assessed for 2-methoxy-2-methylbutane and compared to 2-methoxy-2-methylpropane and other industrial solvents.

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Liquid–Liquid Equilibria for the System Water + 4-Methylpentan-2-one + Acetic Acid at Several Temperatures

Cited by 7 publications

References 21 publications

Removal of estrone (E1), 17β-estradiol (E2), and 17α-ethinylestradiol (EE2) from wastewater by liquid–liquid extraction

Removal of estrone (E1), 17β-estradiol (E2), and 17α-ethinylestradiol (EE2) from wastewater by liquid–liquid extraction

Liquid–Liquid Equilibrium of the Ternary System of Water + Phenol + (Propan-2-yl) Benzene at Several Temperatures

Quaternary, Ternary and Binary LLE Measurements for 2-Methoxy-2-methylbutane + Furfural + Acetic Acid + Water at Temperatures between 298 and 341 K

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