Liquid-liquid equilibrium of novel aqueous two-phase systems and evaluation of salting-out abilities of salts

• Authors: Yun Wang , Jing Wang , Juan Han , Shiping Hu , Yongsheng Yan
• Languages of publication: EN

Abstracts

EN

Binodal data are beneficial to the design of aqueous two-phase extraction and the establishment of thermodynamic models. For the 2-propanol + Li2SO4/Na2SO4/ (NH4)2SO4/K3PO4 + water systems and 1-propanol + K3PO4/K3C6H5O7/(NH4)3C6H5O7 + water systems, binodal data were determined at 298.15 K. The binodal data were correlated by a theoretical equation on the basis of statistical geometry. The salting-out abilities of salts and the phase-separation abilities of alcohols were evaluated by the effective excluded volume of salt and the binodal curves plotted in molality. A simple Hofmeister series of cations and anions were obtained. The organic salt, K3C6H5O7, shows as high a salting-out ability as K3PO4. [...]

Keywords

EN

Aqueous two-phase system; Binodal data; Salting-out ability; 1-Propanol; 2-Propanol

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2010
• Volume: 8
• Issue: 4
• Pages: 886-891

Dates

published

1 - 8 - 2010

online

17 - 6 - 2010

Contributors

author

Yun Wang

• School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China

author

Jing Wang

• Department of Building Environment and Energy Engineering, Henan University of Urban Construction, Pingdingshan, Henan, 467044, China

author

Juan Han

• School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China

author

Shiping Hu

• School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China

author

Yongsheng Yan

• School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China

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Identifiers

DOI

10.2478/s11532-010-0053-8