<span style="font-size:12.0pt;font-family:"Times New Roman";mso-bidi-font-weight: bold" lang="EN-US">Extraction Equilibria of Aqueous Solution of Acetic Acid with Tri-<i style="mso-bidi-font-style:normal">n</i>-octylamine </span>

Abstract

The extraction of acetic acid from aqueous solutions by tri-<i style="mso-bidi-font-style:normal">n</i>-octylamine dissolved in various diluents in wide range of amine concentration (0.23 -1.15 mol/ L) is studied. Extraction equilibria of acetic acid in the solution of tri -<i style="mso-bidi-font-style:normal">n</i>-octylamine in five various solvents at 298.15 K is measured. Diluting solvents used in this study are hexane, cyclohexane, toluene, methyl isobutyl ketone (MIBK), and propanol. Using Bizek approach two acids : amine complexes. (Acid), (Amine) and (Acid) , (Amine)₂ is are assumed to exist in the organic phase in the case of proton- donating diluents, while the complexes (Acid), (Amine) and (Acid)₂, (Amine)₃ are suggested in the case of non-proton-donating diluents. As a result of batch extraction experiments, distribution coefficients (D), loading factors (Z), and overall extraction constants <span style="mso-bidi-font-style:italic">(<i>K₁₁, K</i>₁₂<i> , K</i>₂₃) are calculated.

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