Liquid–Liquid Equilibrium Study of the Water + Acetic Acid + Kerosene Ternary System at 293.2, 298.2, and 308.2 K

Jafari, Farnaz; Saien, Javad

doi:10.1021/acs.jced.1c00474

Cited by 9 publications

(14 citation statements)

References 59 publications

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“…The influence of pulsed electric field, size and surface charge and concentration of nanoparticles, physical properties of the chemical system, and drop size can be involved in a wide-ranging and accurate model for predicting the mass transfer enhancements. Meanwhile, low slope of the equilibrium curve for the used chemical system at 20 °C, ( 0.09) within the acetic acid concentration range confirms that the mass transfer resistance lies in the dispersed phase 41 i.e. according to the Whitman two film theory.…”

Section: Resultsmentioning

confidence: 78%

Mass transfer intensification for carbon quantum dot nanofluid drops under pulsed electric fields

Jafari

Saien

Rashidi³

2022

Sci Rep

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Simultaneous use of carbon quantum dot (CQD) nanofluids and pulsed electric fields exhibits amazing mass transfer intensification in liquid–liquid extraction of circulating drops. Here, the chemical system of kerosene–acetic acid–water with mass transfer resistance in the organic phase was used in which organic nanofluid drops contained CQD or modified CQD-Fe. These products with extremely small sizes of 7.2 and 13.4 nm were synthesized and characterized by DLS, Zeta potential, XRD, EDS and SEM techniques. To find optimum conditions, CQD concentrations within (0.0005–0.003) wt%, electric field frequencies within (50–550) Hz and electric field strengths to 16 V/cm were examined. From hydrodynamic point of view, the flow pattern of drops was in circulating mode, and that terminal velocity of drops correctly followed the Grace model. The substantial effect of pulsed electric field on the CQD and CQD-Fe nanofluids, brought about mass transfer enhancements to 263.5 and 291.6%. This can be attributed to the electro-induced motion of global CQDs with pulsed electric fields. For the aim of modelling, the adapted Kumar and Hartland equation with a developed correlation of the enhancement factor versus involved dimensionless variables were satisfactory to reproduce the mass transfer coefficient data.

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Section: Resultsmentioning

confidence: 78%

Mass transfer intensification for carbon quantum dot nanofluid drops under pulsed electric fields

Jafari

Saien

Rashidi³

2022

Sci Rep

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“…In 2009 and 2014, by analyzing various compositions to find the surrogate for kerosene with the closest physicochemical properties, a mixture of 80 wt % of n -decane and 20 wt % of 1,2,4-trimethylbenzene was selected as the most suitable one. , The value of the activity coefficient of hydrocarbons in kerosene is very close to unity, supporting the fact that this mixture is a pseudo-single component to be considered instead of kerosene for correlating the experimental LLE data . It is worth mentioning that this approach is satisfactory for modeling the experimental data of the salt-free chemical systems at different temperatures …”

Section: Resultsmentioning

confidence: 93%

“…The study of the liquid–liquid equilibrium (LLE) of chemical systems involving a petroleum product has been of interest in many research studies. In our previous study, the capability of kerosene for separating acetic acid from pure aqueous solutions was confirmed by comparing it with alcohol, ether, and ionic liquid solvents. Kerosene has unique features of low toxicity, low cost, availability, and reusability with respect to the significant difference between the boiling point range of kerosene (446.2–542.2 K) and that of acetic acid (391.0 K) …”

Section: Introductionmentioning

confidence: 86%

“…Kerosene has unique features of low toxicity, low cost, availability, and reusability with respect to the significant difference between the boiling point range of kerosene (446.2−542.2 K) and that of acetic acid (391.0 K). 9 The presence of dissolved salts in the aqueous phase can remarkably alter the equilibrium composition. Indeed, due to the salting-out effect, the presence of inorganic salts in the aqueous phase and the subsequent solvation of ions causes a part of water molecules to be unavailable and, in turn, improves the tendency of the solute toward the organic phase.…”

Section: Introductionmentioning

confidence: 99%

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Experimental and Modeling Study for the Salting-Out Extraction of Acetic Acid from Aqueous Solutions with Kerosene

Jafari

Saien

2022

J. Chem. Eng. Data

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The outstanding salting-out effect on the liquid–liquid equilibrium of water + acetic acid + kerosene was studied at a temperature of T = 298.2 K and under the ambient pressure of p = 81.5 kPa. The importance of this study relates to the kerosene availability around the world and that water sources are salty in most cases. The results revealed that the recovery of acetic acid from aqueous solutions was considerably boosted with 0.005 and 0.010 mass fractions of NaCl, Na2SO4, and MgSO4. The separation factors with the maximum enhancements of 81.62, 158.43, and 287.74%, respectively, were achieved with the salts under the used higher concentration. Consistent with the Hofmeister series, the salting-out effect appeared in the order of MgSO4 > Na2SO4 > NaCl. Meanwhile, the validity of the experimental data was confirmed based on the Eisen–Joffe equation. By considering a surrogate mixture for kerosene, composed of 80 wt % n-decane and 20 wt % 1,2,4-trimethylbenzene, the thermodynamic models of NRTL and UNIQUAC were used to correlate the data. Excellent agreements between the experimental and predicted values were found with very low maximum root mean square deviations of 0.0062 and 0.0068 for the models, respectively.

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“…The separation of acetic acid from its aqueous phase is difficult by distillation requires several plates. In such a case, liquid-liquid extraction is the costeffective method to recover acetic acid in its aqueous phases [5], especially the acetic acid concentration below 50% [6]. The dilute form of acetic acid separation requires more attention due to its more aqueous phase content; such separation is more difficult in any of the methods.…”

Section: Introductionmentioning

confidence: 99%

Performance of PES Membrane Contactor on the Separation of Dilute Acetic Acid from Aqueous Forms

Sofiya¹,

Sivaraman²

2022

Int. J. Membrane Sci. Techno.

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The azeotropic characteristics of acetic acid between water make its separation from its aqueous phase essential. Many methods are studied for separating such a mixture. Solvent extraction using membrane contactors can increase the contact surface area. The dilute aqueous acetic acid extraction with the solvents petroleum ether and diisopropyl ether in a Poly Ether Sulfone (PES) hollow fiber membrane contactor was studied. The solvents and membrane extraction abilities are evaluated by exchanging the fluids on the shell and tube sides based on the distribution coefficients and total mass transfer coefficient at various flow rates. The findings show that when the solvent flow is increased, whether on the shell side or the tube side, the concentration of acetic acid increases in its solvent phase. As the shell side Reynolds number increased, it was noticed that the distribution coefficient value also increased. Both solvents' extraction ability was minimal, but diisopropyl ether gave better results when compared with the petroleum ether in terms of distribution coefficient. Three film resistance parameters in the series model have determined the overall mass transfer coefficient. The Reynolds number values showed that the mass transfer occurs in a laminar zone. Changes in the petroleum ether's Reynolds number on the tube side resulted in a maximum mass transfer coefficient of 11.41x10-6 m/s. Data on such hydrodynamics studies on membrane solvent extraction can help recover value-added material studies.

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Liquid–Liquid Equilibrium Study of the Water + Acetic Acid + Kerosene Ternary System at 293.2, 298.2, and 308.2 K

Cited by 9 publications

References 59 publications

Mass transfer intensification for carbon quantum dot nanofluid drops under pulsed electric fields

Mass transfer intensification for carbon quantum dot nanofluid drops under pulsed electric fields

Experimental and Modeling Study for the Salting-Out Extraction of Acetic Acid from Aqueous Solutions with Kerosene

Performance of PES Membrane Contactor on the Separation of Dilute Acetic Acid from Aqueous Forms

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