Influence of Salt on the Solubility and Tie-Line Data for Water + Formic Acid + Methyl Isobutyl Ketone at <i>T</i> = 298.15 K

Wannachod, Thanaporn; Hronec, Milan; Soták, Tomáš; Fulajtárová, Katarína; Pancharoen, Ura; Nootong, Kasidit

doi:10.1021/acs.jced.6b00109

Cited by 10 publications

(10 citation statements)

References 35 publications

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“…The use of biodiesel to meet the global energy demand has several advantages [9]. Biodiesel is a renewable energy fuel produced from vegetable oil and animal fats [10,11]. Characterization of the oils and biodiesels provides a means of identification and quantification of the fatty acid composition of the oil and sources.…”

Section: Introductionmentioning

confidence: 99%

Production, characterization and application of ternary phase diagrams for the purification of biodiesel produced from tropical almond seed oil

Adama¹,

Onochie²,

Gbeinzi³

2021

Nig. J. Tech.

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This study presents the application of ternary phase diagrams to tropical almond biodiesel components separation and purification at two temperatures. The seed oil was extracted mechanically and alkaline transesterified to produce biodiesel. The oil and biodiesel were characterized using standard methods. Tie lines and binodal solubility curve data were determined using modified cloud point titration procedures. Gas chromatographic method was employed in the analysis of the phase compositions. The mixture of biodiesel, methanol and glycerol were investigated at 20 °C, 30 °C and withdrawal times of 2 to 32 minutes at 2 minutes intervals. Distribution coefficient, K and solvent selectivity, S analysis were performed. Results obtained showed that S > 1 indicating the ability of methanol to promote phase separation and purification. K < 1 implying that there was lower quantities of methanol solubilized in the biodiesel phase. The ternary phase diagrams provided the means of predicting the components distribution. Keywords: Production, Characterization, Tropical Almond Biodiesel, Purification, Ternary Phase Diagram

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Section: Introductionmentioning

confidence: 99%

Production, characterization and application of ternary phase diagrams for the purification of biodiesel produced from tropical almond seed oil

Adama¹,

Onochie²,

Gbeinzi³

2021

Nig. J. Tech.

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“…It is worth mentioning that in many studies, experimental LLE data have been correlated using the classic NRTL model, instead of the complicated electrolyte-NRTL model. 45,46 Considering the importance of the nonrandomness parameter (α ij ) in the NRTL model and to achieve the desired goodness of fitting regression, α ij was fitted with the best values of 0.2 and 0.3. 47 The values of the structural parameters r and q required for the UNIQUAC model, which is related to molecular size and shape appointing, have been reported in the literature and are listed in Table 6.…”

Section: Resultsmentioning

confidence: 99%

“…Thus, applying the classical NRTL and UNIQUAC models with the ternary component was satisfactory. It is worth mentioning that in many studies, experimental LLE data have been correlated using the classic NRTL model, instead of the complicated electrolyte-NRTL model. , …”

Section: Resultsmentioning

confidence: 99%

Temperature and Salt Effects on the Liquid–Liquid Equilibrium of the Water + Cyclopentanone + (Propan-2-yl) Benzene System

et al. 2020

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The separation of cyclopentanone from aqueous solutions with recommended (propan-2-yl) benzene (cumene) solvent was investigated at different temperatures of 293.2, 298.2, and 308.2 K and with the effect of NaCl, Na 2 SO 4 , and MgSO 4 salts. In a wide mass fraction range of cyclopentanone, the solute distribution coefficients and separation factors were within (1.554−5.992) and (75.85−1944.97), respectively. The high separation factors corresponded to low solute concentrations and low temperatures. The effect of salts was investigated, and enhancements in the separation factor were achieved up to 24.7, 39.9, and 49.3% with 0.01 mass fraction of, respectively, NaCl, Na 2 SO 4 , and MgSO 4 in an aqueous phase. This order of salt effectiveness is consistent with the Gibbs free energy for the hydration of the constituent ions. The consistency of LLE data for the employed system, with and without salts, was ascertained with corresponding equations. For the modeling of obtained data, the well-known activity coefficient models of NRTL and UNIQUAC were used, and binary interaction parameters were determined. High accuracy of the models was revealed with root-mean-square deviations of less than 0.0053 and 0.0069, respectively.

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“…In addition, the presence of dissolved salt changes the phase equilibrium behavior of a mixture significantly [28][29][30][31]. Recently, Govindarajan and Sabarathinam [32], Mohsen-Nia et al [33], and Santos et al [34] have investigated effects of some inorganic salts such as Na 2 SO 4 , ZnSO 4 , (NH 4 ) 2 SO 4 , NaCl, KCl, KBr, and NaNO 3 on the ternary liquid-liquid equilibria data.…”

Section: Phosphoric Acid Industry -Problems and Solutionsmentioning

confidence: 99%

Purification of Phosphoric Acid by Liquid‐Liquid Equilibrium

Bahrpaima¹

2017

Phosphoric Acid Industry - Problems and Solutions

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Various ternary and quaternary liquid-liquid phase equilibrium data for water þ phosphoric acid þ solvent(s) have been reported. Salting-out, solvent, and temperature effects on the binodal curve and the tie lines have been highlighted and the capability of solvents with different functional groups to extract phosphoric acid from water has been compared. Studying of influence of magnetic, electromagnetic, and ultrasonic fields on the separation factors and distribution coefficients of aqueous phosphoric acid mixtures has been proposed. Moreover, a summary of the optimized binary interaction values, which resulted from non-random two-liquid (NRTL) and universal quasi-chemical (UNIQUAC) thermodynamic models using genetic algorithm (GA), bee algorithm (BA), and simulated annealing (SA), has been presented. Group method of data handling (GMDH) and linear solvation energy relationship (LSER) methods for the correlation of experimental liquid-liquid equilibrium (LLE) data have been used.

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Influence of Salt on the Solubility and Tie-Line Data for Water + Formic Acid + Methyl Isobutyl Ketone at T = 298.15 K

Cited by 10 publications

References 35 publications

Production, characterization and application of ternary phase diagrams for the purification of biodiesel produced from tropical almond seed oil

Production, characterization and application of ternary phase diagrams for the purification of biodiesel produced from tropical almond seed oil

Temperature and Salt Effects on the Liquid–Liquid Equilibrium of the Water + Cyclopentanone + (Propan-2-yl) Benzene System

Purification of Phosphoric Acid by Liquid‐Liquid Equilibrium

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