Experimental study and modeling of citric acid solubility in alcohol mixtures

Galvão, Alessandro Cazonatto; Robazza, Weber da Silva; Arce, Pedro F.; Capello, Cristiane; Hagemann, Dilian H.

doi:10.1016/j.jfoodeng.2018.05.032

Cited by 14 publications

(5 citation statements)

References 27 publications

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“…Based on the solid–liquid phase equilibrium theory, the NRTL model is widely used to predict nonideal solution properties. − The NRTL model was developed by Renon and Prausnitz, which can be expressed as follows …”

Section: Resultsmentioning

confidence: 99%

Solubility Measurement, Correlation, and Thermodynamic Analysis of N-Acetyl-l-leucine in 12 Pure Organic Solvents from 283.15 to 323.15 K

Guo

Wang

et al. 2020

J. Chem. Eng. Data

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The solubility of N-acetyl-l-leucine in 12 mono organic solvents (methanol, ethanol, n-propanol, 2-propanol, 1-butanol, isobutanol, 2-butanol, methyl acetate, ethyl acetate, propyl acetate, acetone, and acetonitrile) was determined by the gravimetric method over the temperatures ranging from 283.15 to 323.15 K at 0.1 MPa. The solubility of N-acetyl-l-leucine in each experimental solvent increases with increasing temperature. Moreover, the solubility is an order of magnitude higher in alcohol solvents than in other solvents, which is mainly attributed to the hydrogen bond formation. In addition, the experimental solubility data are correlated by three models, including the modified Apelblat equation, λh equation, and the nonrandom two-liquid (NRTL) model. All of the average relative deviation % values are less than 3.72%, which indicates that the three models have satisfactory correlations. Furthermore, the mixing thermodynamic properties of N-acetyl-l-leucine in 12 mono solvents including Δmix G 0, Δmix H 0, and Δmix S 0 are calculated based on the NRTL model, indicating that the mixing process was spontaneous.

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Section: Resultsmentioning

confidence: 99%

Solubility Measurement, Correlation, and Thermodynamic Analysis of N-Acetyl-l-leucine in 12 Pure Organic Solvents from 283.15 to 323.15 K

Guo

Wang

et al. 2020

J. Chem. Eng. Data

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show abstract

“…The NRTL model is commonly applied to predict nonideal solution properties. − The model is expressed as follows where where x 2 refers to the mole solubility fraction of solvent. α 12 stands for the nonrandomness of the system.…”

Section: Resultsmentioning

confidence: 99%

Solubility Measurement and Correlation of Probenecid in 12 Pure Organic Solvents and Thermodynamic Properties of Mixing of Solutions

et al. 2019

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The solubility data of probenecid in 12 different organic solvents including methanol, methyl acetate, ethanol, ethyl acetate, n-propanol, n-butanol, butyl acetate, n-pentanol, isopropanol, isobutanol, acetone, and methyl tert-butyl ether was measured using the gravimetric method over the temperatures range from 283.15 to 323.15 K at 0.1 MPa. The acetone had much higher solubility to probenecid than to other solvents. Three models, including the modified Apelblat equation, the van’t Hoff model, and the nonrandom two-liquid (NRTL) model, were applied to correlate the measured solubility data. The correlation results were evaluated by the average relative deviation (ARD). All of the ARD values were less than 4.522%, which indicated that the three models have a satisfactory correlation. The thermodynamic properties of mixing of probenecid in 12 pure organic solvents including the enthalpy of mixing, Gibbs energy of mixing, and entropy of mixing were calculated by the NRTL model using the correlation results.

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“…The thermodynamic approach applied to model solid–liquid equilibrium was published previously, and a further discussion about the semiempirical models employed in this work and their equations are available in the literature. , In accordance with the thermodynamic formalism, the solubility of a solid in a liquid is influenced by the activity coefficient of the solid solubilized γ s and its ideal solubility. The calculations of ideal solubility depend on the fusion enthalpy Δ fus H s and the fusion temperature T m s of the solid.…”

Section: Modelingmentioning

confidence: 99%

Phase Equilibrium Involving Xylose, Water, and Ethylene Glycol or 1,2-Propylene Glycol at Different Temperatures

et al. 2019

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Xylose is an important molecule that can be used in the production of chemicals such as ethylene glycol and 1,2-propylene glycol. Experimental and theoretical information are fundamental for the development of conversion and separation processes. For the supply of solubility data, this work sought to study solid−liquid equilibrium of xylose in binary liquid solutions formed by water/ethylene glycol and water/1,2-propylene glycol in the temperature range between 293.15 and 323.15 K, covering the entire molar composition range of the binary solution. The Jouyban−Acree and NRTL models were applied in the correlation of experimental data, and the UNIFAC and ASOG models were applied in the prediction of experimental data. Xylose showed solubility in the pure components following the order water > ethylene glycol > 1,2-propylene glycol. Intermediate values of solubility are related to intermediate concentrations of the binary liquid mixture. The mathematical models were successfully applied, and new parameters of UNIFAC and ASOG are presented.

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Experimental study and modeling of citric acid solubility in alcohol mixtures

Cited by 14 publications

References 27 publications

Solubility Measurement, Correlation, and Thermodynamic Analysis of N-Acetyl-l-leucine in 12 Pure Organic Solvents from 283.15 to 323.15 K

Solubility Measurement, Correlation, and Thermodynamic Analysis of N-Acetyl-l-leucine in 12 Pure Organic Solvents from 283.15 to 323.15 K

Solubility Measurement and Correlation of Probenecid in 12 Pure Organic Solvents and Thermodynamic Properties of Mixing of Solutions

Phase Equilibrium Involving Xylose, Water, and Ethylene Glycol or 1,2-Propylene Glycol at Different Temperatures

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