Aqueous Two-Phase Systems of Mixture of Triblock Copolymer (EO)13(PO)30(EO)13 (L64) and Sulfate Salts at Different Temperatures

Faria, Diêgo Nunes; Silva, Angélica Siqueira da; Virtuoso, Luciano Sindra; Nascimento, Kelany S.; Nagano, Celso Shiniti; Mesquita, Alessandra Rezende

doi:10.1021/je501094z

Cited by 8 publications

(3 citation statements)

References 20 publications

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“…Differences in electrolyte composition have a direct effect on phase segregation in ATPSs due to changes in the salting-out phenomenon, which act to decrease the number of water molecules near the polymer surface, favoring phase segregation. − …”

Section: Results and Discussionmentioning

confidence: 99%

Thermodynamic Investigation of the Aqueous Two-Phase Systems Formed by PEG 400 + Water + Either Sodium Carbonate or Potassium Carbonate at Different Temperatures: Experimental and Correlational Approaches

et al. 2019

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Systems composed of poly(ethylene)glycol (PEG 400) + water + either potassium carbonate or sodium carbonate were studied at 283.15, 298.15, and 313.15 K. The effects of temperature and the electrolyte on phase segregation were evaluated. The phase segregation process was endothermic and entropically driven. The efficacy of the cations in inducing phase formation with PEG 400 followed the order K2CO3 < Na2CO3. The binodal curves were successfully described using the empirical equation suggested by Merchuk and modified to include the effect of temperature. Tie-line compositions were correlated using the Othmer–Tobias, Bancroft, and Hand equations. The experimental tie-line data for PEG 400 + K2CO3 + water and PEG 400 + Na2CO3 + water were also correlated using the nonrandom two liquid model. The use of this thermodynamic model resulted in reliable data for the system while reducing the number of experiments needed. All of the correlations indicated satisfactory fits between the calculated and experimental data.

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Section: Results and Discussionmentioning

confidence: 99%

Thermodynamic Investigation of the Aqueous Two-Phase Systems Formed by PEG 400 + Water + Either Sodium Carbonate or Potassium Carbonate at Different Temperatures: Experimental and Correlational Approaches

et al. 2019

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“…The aqueous two-phase system (ATPS) is a new type of separation and enrichment technology governed by the mixing of two components in a water-based solution. It has shown great superiority to separation, purification, and recovery of metals, , antibiotics, dyes, and proteins. , The developed systems include two-polymer ATPS, polymer–salt ATPS, , ionic liquid–salt ATPS, , and micromolecule organic solvent–salt ATPS. , The ATPS containing polymer has high viscosity in the polymer phase. It is unfavorable for mass transfer and phase separation in the separation process.…”

Section: Introductionmentioning

confidence: 99%

“…It has shown great superiority to separation, purification, and recovery of metals, 1,2 antibiotics, 3 dyes, 4 and proteins. 5,6 The developed systems include two-polymer ATPS, 7 polymer−salt ATPS, 8,9 ionic liquid−salt ATPS, 10,11 and micromolecule organic solvent−salt ATPS. 12,13 The ATPS containing polymer has high viscosity in the polymer phase.…”

Section: Introductionmentioning

confidence: 99%

Novel Aqueous Two-Phase System Consisting of 1,4-Bis(2-hydroxypropyl)-piperazine, Na₂SO₄, and H₂O: Temperature-Dependent Equilibrium Data and Physical Properties

et al. 2017

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In this work, we have developed a novel aqueous twophase system (ATPS) composed of 1,4-bis(2-hydroxypropyl)piperazine (HPP), Na 2 SO 4 , and H 2 O, which can determine the liquid−liquid equilibrium and phase diagrams at the temperatures of 303.15−323.15 K. Simultaneously, the physical properties such as density, viscosity, refractive index, and surface tension have been determined for the top phases and bottom ones of the ATPS. The results indicate that temperature has no significant effect upon the biphasic region, implying a small enthalpy contribution during phase separation. However, the changes in temperature result in a decrease of tie line slope, because H 2 O molecules are transferred from the bottom phase to the top phase. In determining the physical properties of the system, viscosity and refraction index increase with the system components increasing, during the phase of both HPP and Na 2 SO 4 , while density and surface tension fall with the increase of system components in the top phase and decrease in the bottom one. ATPS would be a new method for removing the heat-stable salts (HSS) containing sulfuric acid root of absorbent for flue gas desulfurization, which is as HPP.

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Effect of Salt Mixtures on Aqueous Two-Phase System Composed of PEG 35000: Experiment and Correlation

Khavidaki,

Asadi,

Salabat

2024

J Solution Chem

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Aqueous Two-Phase Systems of Mixture of Triblock Copolymer (EO)₁₃(PO)₃₀(EO)₁₃ (L64) and Sulfate Salts at Different Temperatures

Cited by 8 publications

References 20 publications

Thermodynamic Investigation of the Aqueous Two-Phase Systems Formed by PEG 400 + Water + Either Sodium Carbonate or Potassium Carbonate at Different Temperatures: Experimental and Correlational Approaches

Thermodynamic Investigation of the Aqueous Two-Phase Systems Formed by PEG 400 + Water + Either Sodium Carbonate or Potassium Carbonate at Different Temperatures: Experimental and Correlational Approaches

Novel Aqueous Two-Phase System Consisting of 1,4-Bis(2-hydroxypropyl)-piperazine, Na₂SO₄, and H₂O: Temperature-Dependent Equilibrium Data and Physical Properties

Effect of Salt Mixtures on Aqueous Two-Phase System Composed of PEG 35000: Experiment and Correlation

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Aqueous Two-Phase Systems of Mixture of Triblock Copolymer (EO)13(PO)30(EO)13 (L64) and Sulfate Salts at Different Temperatures

Cited by 8 publications

References 20 publications

Thermodynamic Investigation of the Aqueous Two-Phase Systems Formed by PEG 400 + Water + Either Sodium Carbonate or Potassium Carbonate at Different Temperatures: Experimental and Correlational Approaches

Thermodynamic Investigation of the Aqueous Two-Phase Systems Formed by PEG 400 + Water + Either Sodium Carbonate or Potassium Carbonate at Different Temperatures: Experimental and Correlational Approaches

Novel Aqueous Two-Phase System Consisting of 1,4-Bis(2-hydroxypropyl)-piperazine, Na2SO4, and H2O: Temperature-Dependent Equilibrium Data and Physical Properties

Effect of Salt Mixtures on Aqueous Two-Phase System Composed of PEG 35000: Experiment and Correlation

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Aqueous Two-Phase Systems of Mixture of Triblock Copolymer (EO)₁₃(PO)₃₀(EO)₁₃ (L64) and Sulfate Salts at Different Temperatures

Novel Aqueous Two-Phase System Consisting of 1,4-Bis(2-hydroxypropyl)-piperazine, Na₂SO₄, and H₂O: Temperature-Dependent Equilibrium Data and Physical Properties