Liquid - liquid equilibria of the water + butyric acid + decanol ternary system

Kırbaşlar, Ş. İsmail

doi:10.1590/s0104-66322006000300010

Cited by 14 publications

(14 citation statements)

References 18 publications

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“…The physical equilibrium of butyric acid using different diluents (1-decanol, sunflower oil, and soybean oil) at different temperatures (298.15–318.15 K) is demonstrated in Tables – . The physical extraction performance using 1-decanol is comparable with that in the study by Kirbaslar . 1-Decanol shows better extraction of BA than sunflower oil, followed by soybean oil.…”

Section: Resultssupporting

confidence: 73%

“…Kirbaslar reported the physical extraction data of butyric acid using 1-decanol. The distribution coefficient varied in the range of 5.4–6.4 . Fourteen different carboxylic acids including butyric acid were extracted employing tri- n -octyl phosphine oxide (TOPO) in hexane at 308.15 K .…”

Section: Introductionmentioning

confidence: 99%

“…According to the above discussions, physical extraction of butyric acid using both sunflower and soybean oils was carried out but at 24 °C. , Although TBP is a microorganism-friendly chemical, owing to its lower recovery capacity, it may not be economic to use it as the reactive extractant for recovering BA. , Hence, TOA has been used to recover BA from dilute aqueous solutions. , The recovery of BA using TOA in n -decanol only limited to a single temperature and single initial BA molality has been studied . ILs have been used successfully to extract BA from wastewater and also from a fermentation broth. − But the high cost of ILs and their instability even at room temperature hinder them from being selected as carboxylic acid extractants.…”

Section: Introductionmentioning

confidence: 99%

“…The distribution coefficient varied in the range of 5.4−6.4. 18 Fourteen different carboxylic acids including butyric acid were extracted employing tri-n-octyl phosphine oxide (TOPO) in hexane at 308.15 K. 5 A tertiary amine and a quaternary amine were used for extracting butyric acid along with lactic, acetic, propionic, and butyric acids 6 in 2octanol and kerosene diluents. Alamine 336 in 2-octanol was found to be a more efficient solvent for recovering butyric acid than aliquat 336.…”

Section: ■ Introductionmentioning

confidence: 99%

“…4,15 Although TBP is a microorganism-friendly chemical, 3 owing to its lower recovery capacity, it may not be economic to use it as the reactive extractant for recovering BA. 18,24 Hence, TOA has been used to recover BA from dilute aqueous solutions. 20,21 The recovery of BA using TOA in ndecanol only limited to a single temperature and single initial BA molality has been studied.…”

Section: ■ Introductionmentioning

confidence: 99%

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Reactive Extraction of Butyric Acid from Water Using Trioctyl Amine in 1-Decanol and Green Natural Oils

et al. 2021

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In this work, butyric acid (BA) was extracted using trioctyl amine (TOA). Various temperature-dependent (298.15− 318.15 K) process parameters were estimated and analyzed. To reduce the harmful effects of TOA and to avoid the detrimental effects of toxic diluents on microorganisms, green and nontoxic diluents, sunflower and soybean oils, were tested. In physical extraction, K D dil and the partition coefficient, P, decreased in the order of 1-decanol > sunflower oil > soybean oil, whereas the dimerization constant, D, showed the opposite trend. In chemical extraction, the extraction efficiencies were 85−90% for 1-decanol, 82−88% for sunflower oil, and 75−86% for soybean oil. In terms of the distribution coefficient, 1-decanol was a better diluent than sunflower oil, followed by soybean oil. The high distribution coefficients and extraction efficiencies obtained using sunflower and soybean oils were found to be encouraging for their use in biorefinery industries. (K D chem )/(K D phy ) was greater than 1.0 in all of the studied cases. The best distribution coefficient model was identified. The complexation reaction stoichiometry and the equilibrium complexation reaction constant were estimated using the differential evolution technique. The order of the complex molality, [HA m S n ] org , in different diluents was 1-decanol > sunflower > soybean. Different thermodynamic parameters were determined and analyzed. Variations of acid−extractant, free acid, and dimer molalities at the chemical equilibrium state were found and discussed. Analysis based on the enthalpy change due to mass transfer, (ΔH) mass tr , indicated the easiest mixing of the phases in sunflower oil and the most difficult in soybean oil. The reaction equilibrium constant, K E (m:n) , had the highest value at the lowest temperature (298.15 K) and decreased with an increase in temperature and had values in the order of 1-decanol > sunflower > soybean.

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Section: Resultssupporting

confidence: 73%

Section: Introductionmentioning

confidence: 99%