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    Effect of Diluent on the Extraction of Oxoethanoic (Glyoxylic) Acid by N,N-Dioctyloctan-1-amine (TOA)
    (Amer Chemical Soc, 2011) Pehlivanoglu, Nil; Uslu, Hasan; Kirbaslar, S. Ismail
    The extractability of aqueous solutions of oxoethanoic acid by N,N-dioctyloctan-1-amine (TOA) in various diluents, including isoamyl alcohol, octan-1-ol, nonan-1-ol, decan-1-ol, methyl ethyl ketone, diisobuthyl ketone, hexan-2-one, toluene, kerosene, and n-hexane has been investigated. Batch extraction results at 25 degrees C have been calculated and reported as distribution coefficients (K-D), loading factors (Z), and extraction efficiencies (E). With these solvents, using TOA has been found to be very effective (K-D >> 1). Decan-1-ol was found to be the most effective diluent with the highest value of K-D (13.43) at 1.37 mol.kg(-1) concentration of TOA. The results of the liquid-liquid equilibrium measurements were correlated with a linear solvation energy relationship (LSER) model that takes into account physical interactions as well as with modified Freundlich and Langmuir equations. The experimental results for the oxoethanoic acid extraction are compared to the model results.
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    Experimental and Modeling Studies on the Extraction of Glutaric Acid by Trioctylamine
    (Amer Chemical Soc, 2009) Pehlivanoglu, Nil; Uslu, Hasan; Kirbaslar, S. Ismail
    The reactive extraction equilibria for aqueous Solutions of glutaric acid, with trioctylamine (TOA) in various diluents, including isoamyl alcohol, octan-1-ol, nonan-1-ol, decan-1-ol, methyl ethyl ketone (MEK), diisobutyl ketone (DIBK), hexan-2-one, toluene, kerosene, and n-hexane, were determined at various TOA concentrations Experimental results of batch extraction experiments are Calculated and reported as distribution coefficients (K-D), loading factors (Z) and extraction efficiency (E) All measurements were carried out at 25 degrees C. Kerosene was found to be the most effective diluent with the highest value of K-D (7 88). The complexation constants K-11 and K-21 were calculated for each diluent The results of the liquid-liquid equilibrium measurements were correlated by,I linear solvation energy relationship (LSER) model which takes into account physical interactions and modified Freundlich and Langmuir equations. Experimental results of the glutaric acid extraction Lire compared to model results.
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    Extractive Separation of Glutaric Acid by Aliquat 336 in Different Solvents
    (Amer Chemical Soc, 2010) Pehlivanoglu, Nil; Uslu, Hasan; Kirbaslar, S. Ismail
    The reactive extraction equilibria for aqueous solutions of glutaric acid, with trioctylmethyl ammonium chloride (Aliquat 336) in various diluents, including 3-methyl-butan-l-ol, octan-1-ol, nonan-1-ol, decan-1-ol, methyl ethyl ketone, 2,6-dimethy1-4-heptanone, hexan-2-one, toluene, kerosene, and hexane, were determined at various Aliquat 336 (A336) concentrations. Experimental results of batch extraction experiments are calculated and reported as distribution coefficients (K-D), loading factors (Z), and extraction efficiency (E). All measurements were carried out at 25 degrees C. 2,6-Dimethyl-4-heptanone was found to be the most effective diluent with the highest value of K-D (8.51) for the glutaric acid + Aliquat 336 extraction system. The effect of pH has been investigated for octan-1-ol + A336 on glutaric acid extraction in the range of pH 2 to 8. The linear solvation energy relationship (LSER) model has been used to fit the experimental data.
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    Separation of Oxoethanoic Acid from Aqueous Solution by N-Methyl-N,N-dioctyloctan-1-ammonium Chloride
    (Amer Chemical Soc, 2014) Pehlivanoglu, Nil; Uslu, Hasan; Kirbaslar, S. Ismail
    Extractability of oxoethanoic acid (glyoxylic acid (GA)) from aqueous solutions, with N-methyl-N,N-dioctyloctan-1-ammonium chloride (Aliquat 336 (A336)) in various diluents, including isoamyl alcohol, octan-1-ol, nonan-1-ol, decan-1-ol, methyl ethyl ketone (MEK), diisobuthyl ketone (DIBK), hexan-2-one, toluene, kerosene, and n-hexane has been investigated. Batch extraction results were calculated and reported as distribution coefficients (K-D), loading factors (Z), and extraction efficiency (E) at T = 298 K. These solvents with using A336 is more effective than a single solvent (K-D >> 1). Hexan-2-one has been found to be the most effective diluent with the highest value of K-D (17.37) at 1.31 mol.kg(-1) concentration of A336. The results of the liquid liquid equilibrium measurements were correlated by a linear solvation energy relationship (LSER) model which takes into account physical interactions and Freundlich and Langmuir equations. Experimental results of the oxoethanoic acid extraction are compared to model results.