Yazar "Gunyeli, Seyhan" seçeneğine göre listele

Listeleniyor 1 - 4 / 4
  • Küçük Resim Yok
    Öğe
    Distribution of Penicillin G from the Aqueous Phase to the Organic Phase Using Amberlite LA-2 Extractant in Different Diluents
    (Amer Chemical Soc, 2014) Uslu, Hasan; Gunyeli, Seyhan; Ilbay, Zeynep; Kirbaslar, S. Ismail
    Benzyl penicillin, known as penicillin G (PG), is a beta-lactam antibiotic and also a weak monocarboxylic acid. The penicillin G extraction from aqueous solution by Amberlite LA-2 in different diluents, that is, octan-1-ol, nonan-1-ol, 3-methyl-1-butanol, ethyl ethanoate, propyl ethanoate, 4-methylpentan-2-one, octan-2-one, octane, and decane has been studied. According to experimental results, some thermodynamic parameters, such as distribution coefficients (K-D), loading factors (Z), and the extraction efficiency or degree (E), were calculated. The best extraction efficiency, distribution coefficient, and loading factor were determined using 3-methyl-1-butanol diluent as values of 92.63, 12.25, and 0.195, respectively. The linear solvation energy relationship (LSER) model was regressed for the experimental results of the distribution coefficient with the regression coefficient (R-2) as 0.96. Besides, the equilibrium model for the extraction degree of alcohols has been applied and compared with experimental data.
  • Küçük Resim Yok
    Öğe
    Effect of Solvent on Reactive Extraction of 2-Methylidenebutanedioic Acid by Using N-Methyl-N,N-dioctyloctan-1-ammonium Chloride
    (Amer Chemical Soc, 2014) Gunyeli, Seyhan; Uslu, Hasan; Kirbaslar, S. Ismail
    The extraction of 2-methylidenebutanedioic acid was investigated using N-methyl-N,N-dioctyloctan-1-ammonium chloride (trioctylmethyl ammonium chloride) (Aliquat 336) with different diluents having distinct functional groups. Nine diluents were used in the study, that is, octan-1-ol, nonan-1-ol, decan-1-ol, ethyl acetate, propyl acetate, heptan-2-one, octan-2-one, octane, and decane. The measurements were performed at temperature of 298.2 K. The experimental results of batch extractions were used to calculate distribution coefficients (K-D), loading factors (Z), and extraction efficiency (E). The maximum distribution coefficient (K-D = 13.01) was obtained with octan-1-ol, and its extraction efficiency was 92.86 %. Further, the maximum loading factor reached a value of 0.427 at a 0.440 mol.kg(-1) amine concentration.
  • Küçük Resim Yok
    Öğe
    Intensification of Pyridine-3-carboxylic Acid Extraction Using N-Methyl-N,N-dioctyloctan-1-ammonium Chloride in Different Type of Diluents
    (Amer Chemical Soc, 2014) Gunyeli, Seyhan; Uslu, Hasan; Kirbaslar, S. Ismail
    The extraction of pyridine-3-carboxylic acid was investigated using N-methyl-N,N-dioctyloctan-1-ammonium chloride (TOMAC) with different diluents having distinct functional groups. Nine diluents were used in the study, i.e., octan-1-ol, nonan-1-ol, decan-1-ol, ethyl ethanoate, propyl ethanoate, heptan-2-one, octan-2-one, octane, and decane. The measurements were performed at room temperature (T = 298 K). The experimental results of batch extractions were used to calculate distribution coefficients (K-D), loading factors (Z), and extraction efficiency (E). The maximum distribution coefficient (K-D = 2.335) was obtained with octan-1-ol, and its extraction efficiency was 70.16 %. Besides, the highest loading factor was reached to a value of (0.179 at 0.440) mol.kg(-1) equilibrium amine concentration. The results of the liquid-liquid equilibrium measurements were correlated by a linear solvation energy relationship (LSER) model which takes into account physical interactions. Experimental and model results of pyridine-3-carboxylic acid extraction from aqueous solution was compared. LSER model has been applied to experimental results with 0.98 R square.
  • Küçük Resim Yok
    Öğe
    Separation of Penicillin G from Fermentation Broth Using N,N-Dioctyloctan-1-amine Extractant in Different Diluents
    (Taylor & Francis Inc, 2015) Uslu, Hasan; Gunyeli, Seyhan; Ilbay, Zeynep; Kirbaslar, S. Ismail
    The extraction of penicillin G was investigated using N,N-Dioctyloctan-1-amine (TOA) with different diluents having distinct functional groups. Nine diluents were used in the study, namely, octan-1-ol, nonan-1-ol, isoamyl alcohol, ethyl ethanoate, propyl ethanoate, methyl iso butyl ketone(MIBK), octan-2-one, octane, and decane. The measurements were performed at a temperature of 298.2 K. The experimental results of batch extractions were used to calculate distribution coefficients (K-D), loading factors (Z), and extraction efficiency (E). The highest distribution coefficient (K-D = 5.79) was obtained with isoamyl alcohol, and its extraction efficiency was 85.27%. Further, the highest loading factor was reached to a value of 0.130 at 0.374 mol.kg(-1) amine concentration. Overloading was not observed at any amine concentration. Solvatochromic model (Linear solvation Energy Relationship (LSER)) for data which obtained from alcohols experiments gives the good results as near as same to experimental results. Suitability of data between experiments and model predictions have been tested with root main square deviation (RMSD) with 0.99.