INFLUENCE OF SOLVENT POLARITY ON INTERFACIAL MECHANISM AND EFFICIENCY OF SUCCINIC ACID REACTIVE EXTRACTION WITH TRI-n-OCTYLAMINE |
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| Authors: | Lenuta Kloetzer Anca-Irina Galaction |
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| Affiliation: | 1. Department of Biochemical Engineering , Faculty of Chemical Engineering and Environmental Protection, “Gheorghe Asachi” Technical University of Iasi , Iasi , Romania;2. Department of Biomedical Science, Faculty of Medical Bioengineering , “Gr. T. Popa” University of Medicine and Pharmacy of Iasi , Iasi , Romania |
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| Abstract: | This article presents the results of a comparative study of reactive extraction of succinic acid with tri-n-octylamine (TOA) dissolved in solvents with different dielectric constants (dichloromethane, n-butyl acetate, and n-heptane), with and without octan-1-ol addition as phase modifier. The positive effect of octan-1-ol on extraction efficiency was quantified by means of amplification factors. For all studied systems, the addition of octan-1-ol into the solvent phase led to an increase of extraction efficiency, the most important effect being recorded for the solvent with the lowest polarity, namely n-heptane. The maximum value of amplification factor was reached for pH = 6 and indicated an increase of reactive extraction yield of about 1.26 times for dichloromethane, 1.55 times for n-butyl acetate, and 2.88 times for n-heptane. |
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| Keywords: | Amplification factor Phase modifier Reactive extraction Succinic acid Tri-n-octylamine |
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