Thermodynamics of magnesium sulfate–polypropylene glycol aqueous two-phase system. Experiment and correlation

1998 ◽  
Vol 152 (1) ◽  
pp. 57-65 ◽  
Author(s):  
Mohammed Taghi Zafarani-Moattar ◽  
Alireza Salabat
Keyword(s):  
Magnesium Sulfate ◽  
Phase System ◽  
Polypropylene Glycol ◽  
Two Phase ◽  
Aqueous Two Phase System ◽  
System Experiment

scholarly journals Extraction of Zn (II) ions in an polypropylene glycol 425 - sodium chloride - water aqueous two-phase system

2022 ◽  
Vol 1212 (1) ◽  
pp. 012010
Author(s):  
M I Fedorova ◽  
I V Zinov’eva
Keyword(s):  
Sodium Chloride ◽  
Distribution Coefficient ◽  
Phase System ◽  
Aliquat 336 ◽  
Polypropylene Glycol ◽  
Two Phase ◽  
Aqueous Two Phase System ◽  
Separation Of Metal Ions ◽  
Straight Line ◽  
Chloride Water

Abstract Liquid-liquid extraction is one of the most used separation methods in chemical technology for recovery and separation of metal ions, other inorganic and organic substances. It is known that for extraction of Zn(II) the most frequently used extractants are D2EHPA, Aliquat 336, etc., diluted in an organic solvent. The use of these reagents does not meet the principles of “green” chemistry. Thus, in the present work, the extraction system based on polypropylene glycol 425 and sodium chloride for the extraction of Zn(II) ions from aqueous solutions is proposed. Equilibrium values of the distribution coefficient in the proposed aqueous two-phase system have been determined. Dependence of metal distribution coefficient on time of phase contact is obtained, time to reach equilibrium was 10 minutes. The isotherm of Zn(II) extraction obtained in the proposed system is a straight line, which indicates the independence of the distribution coefficient from the initial concentration of metal in the solution. The received experimental data can be used at the creation of “green” schemes of processing of Ni-MH batteries.

Enhancing the Sensitivity of DNA and Aptamer Probes in the Dextran/PEG Aqueous Two-Phase System

2021 ◽  
Author(s):  
Qiaoshu Chen ◽  
Yanwen Zhang ◽  
Hui Chen ◽  
Jianbo Liu ◽  
Juewen Liu
Keyword(s):  
Phase System ◽  
Two Phase ◽  
Aqueous Two Phase System

Development of an ethanolic two-phase system (ETPS) based on polypropylene glycol 2000 + ethylene glycol + ethanol for separation of hydrophobic compounds

2021 ◽  
Author(s):  
Filipe Smith Buarque ◽  
Cleide Mara Faria Soares ◽  
Ranyere Lucena de Souza ◽  
Matheus Mendonça Pereira ◽  
Álvaro Silva Lima
Keyword(s):  
Ethylene Glycol ◽  
Phase System ◽  
Polypropylene Glycol ◽  
Two Phase ◽  
Hydrophobic Compounds ◽  
Ethanol Content ◽  
Coexisting Phases ◽  
Phase Water ◽  
High Ethanol

Two-phase water-free systems containing high ethanol content in the coexisting phases can selectively partition hydrophobic molecules from natural biomass.

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