Extraction of Monocarboxylic Acids from Diluted Solutions with Polyethylene Glycol
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An aqueous two-phase system based on polyethylene glycol-1500 and sodium sulfate for the extraction of a number of monocarboxylic acids from aqueous solutions has been studied. The influence of the phase contact time, system composition, the molecular weight of the polymer, and temperature on the quantitative characteristics of the interphase distribution of a number of aliphatic monocarboxylic acids has been investigated. Based on the results, it is concluded that these systems are effective for solving problems of the extraction, separation, and purification of carboxylic acids and they are promising as extraction systems for the extraction of metal salts in the presence of carboxylic acids.
Keywords:solvent extraction aqueous two-phase systems interphase distribution aliphatic acids polyethylene glycol sodium sulfate metal salts
This work was supported by the Russian Foundation for Basic Research (project no. 16-03-00521 “a”) and a grant from the President of the Russian Federation for the state support of young Russian scientists (grant no. MK-106.2017.3).
- 9.de Araujo Sampaio, D., Mafra, L.I., Yamamoto, C.I., et al., Aqueous two-phase (polyethylene glycol + sodium sulfate) system for caffeine extraction: Equilibrium diagrams and partitioning study, J. Chem. Thermodyn., 2016, vol. 98, pp. 86–94. https://doi.org/10.1016/j.jct.2016.03.004 CrossRefGoogle Scholar