Use of Ultrasound in the Determination of Isobaric LLV, SLV, and SLLV Equilibrium Data. Application to the Determination of the Water + Na2SO4 or K2SO4 + 2-Methylpropan-2-ol Systems at 101.3 kPa and Boiling Conditions

The extended UNIQUAC activity coefficient model for electrolyte solutions was used for simulating the water + shortchain alcohol (1-propanol, 2-propanol, and tert-butanol) + salt (NaCl, KCl, NH 4 Cl, Na 2 SO 4 , and K 2 SO 4 ) systems in a wide temperature range (0−100 °C). Experimental data were used for determining the interaction parameters (water + alcohol and alcohol + ion) and the volume and surface area parameters. Parameters for water + ion interactions were taken from previous publications. Equilibrium calculations including SLLV, SLL, SLV, LLV, LV, SV, and SL were performed with the model. The results are largely in agreement with those obtained experimentally. Model parameters previously published for these systems were revised based on new data.

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Extended UNIQUAC Thermodynamic Modeling of Aqueous Two-Phase Systems, Water + Salt + Short-Chain Alcohol

Gomis

Fosbøl

Thomsen

2022

Ind. Eng. Chem. Res.

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Use of Ultrasound in the Determination of Isobaric LLV, SLV, and SLLV Equilibrium Data. Application to the Determination of the Water + Na₂SO₄ or K₂SO₄ + 2-Methylpropan-2-ol Systems at 101.3 kPa and Boiling Conditions

Abstract: The use of ultrasound in the LLVE determination has been studied. The ultrasound effect on LLVE and SLLVE reach is explained A comparison between with and without ultrasound is shown.Two examples of SLLVE experimental data systems are given.

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Extended UNIQUAC Thermodynamic Modeling of Aqueous Two-Phase Systems, Water + Salt + Short-Chain Alcohol

Extended UNIQUAC Thermodynamic Modeling of Aqueous Two-Phase Systems, Water + Salt + Short-Chain Alcohol

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