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This paper describes monocarboxylic acid extraction from aqueous solution experiments, using five types of mixed solvents and 12 monocarboxylic acids. From the results of these experiments, a new mathematical model, including a new definition of extractant's basicity (pKa,BS), was developed and validated. Trioctylamine (TOA)/1-octanol, TOA/methyl iso-butyl ketone (MIBK), TOA/tetrachloromethane (CCl4),...
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