Extracion of citric acid in 2-octanol and 2-propanol solutions containing tomac: an equilibria and a LSER model

Uslu, Hasan

doi:10.1590/s0104-66322008000300013

Cited by 8 publications

(9 citation statements)

References 19 publications

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“…The use of DL-2-octanol as the polarity improver is conducive to the depolymerization of

-type TOMAC (Uslu, 2008 ), thereby increasing the effective ion concentration of the extractant and improving the extraction effect. Under the conditions of 30%

-type TOMAC (volume fraction), V O /V A = 1/1, and room temperature, the effect of DL-2-octanol concentration on the As III single-stage extraction rate and oil–water phase separation was investigated by oscillating the oil–water mixture for 10 min, and results are shown in Figure 9 .…”

Section: Resultsmentioning

confidence: 99%

Study on Extraction Separation of Thioarsenite Acid in Alkaline Solution by CO32--Type Tri-n-Octylmethyl-Ammonium Chloride

et al. 2021

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To overcome the problem of arsenic separation and enrichment from an alkaline leaching solution in arsenic-containing dust, a CO32--type tri-n-octylmethyl-ammonium chloride (TOMAC) method for extracting thioarsenite is proposed in this paper. Considering an alkaline leaching solution as the research object, after vulcanization pretreatment, TOMAC transformation and organic phase saturated extraction capacity were measured, and the extraction mechanism was preliminarily studied. First, Cl−-type quaternary ammonium salt was effectively transformed to HCO3--type by treating organic phase with saturated NaHCO3five times. TOMAC was effectively transformed from HCO3- to CO32- type by alkaline washing with 1.0 mol/l NaOH solution; this washing was repeated thrice. Thereafter, the effects of organic phase composition, phase ratio, extraction time, and temperature on the extraction and separation of arsenic were investigated. The results show that under the conditions of 30% CO32--type TOMAC + 15% sec-octanol + 55% sulfonated kerosene, VO/VA = 1/1, and 5 min extraction at room temperature, the single-stage extraction rate of AsIII is 85.2%. The AsIII concentration in raffinate can be reduced to less than 1.33 × 10−3 mol/l by four-stage countercurrent extraction, and the extraction rate of AsIII can exceed 98.4%.

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“…The use of DL-2-octanol as the polarity improver is conducive to the depolymerization of

-type TOMAC (Uslu, 2008 ), thereby increasing the effective ion concentration of the extractant and improving the extraction effect. Under the conditions of 30%

Section: Resultsmentioning

confidence: 99%

Study on Extraction Separation of Thioarsenite Acid in Alkaline Solution by CO32--Type Tri-n-Octylmethyl-Ammonium Chloride

et al. 2021

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“…Separation and purification of water from such organic compounds is an important challenge in industries which usually is impossible with prevalent methods such as distillation due to formation of azeotrope mixtures. , Nowadays, extraction with solvent (LLE) is a low cost and suitable method for separation of organic compounds from water . Many different solvents (mainly amine) have been reported in publications for the recovery of citric acid from aqueous solution by LLE. − Lintomen et al , studied the liquid–liquid equilibrium of citric acid in water with alcohol as solvent at 298.15 K and estimated the interaction parameters of the NRTL and UNIQUAC thermodynamic models. Nikhade and Pangarkar in 2005 studied the extraction of citric acid from aqueous solutions in the alamine 336–cyclohexanone system, and physical and chemical equilibria have been determined for the extraction of citric acid.…”

Section: Introductionmentioning

confidence: 99%

“…Nikhade and Pangarkar in 2005 studied the extraction of citric acid from aqueous solutions in the alamine 336–cyclohexanone system, and physical and chemical equilibria have been determined for the extraction of citric acid. Uslu in 2008 studied citric acid extraction in 2-octanol and 2-propanol solutions containing TOMAC. Ju et al in 2013 investigated the solvent extraction of citric acid from fermentation broth and reported the LLE data.…”

Section: Introductionmentioning

confidence: 99%

Experimental Data of Citric Acid Extraction from Aqueous Solution with 1-Decanol by Using Liquid–Liquid Equilibrium

et al. 2018

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In this study, experimental tie-line data for the ternary system containing water, citric acid, and 1-decanol were measured at various temperatures (298.2, 308.2, 318.2, and 328.2 K) and atmospheric pressure (101.3 ± 0.4 kPa). The reliability and consistency of the liquid−liquid equilibrium experimental data were evaluated by the Othmer−Tobias and Hand equations. The distribution coefficients and separation factor of this system for solvent capability were calculated. The maximum of separation factor for 1-decanol as solvent was obtained as 4.25 at 298.2 K and decreases with increasing temperature and citric acid concentration. Finally, by using the genetic algorithm method, interaction parameters of the NRTL thermodynamic model were measured for these experimental data. The values of the parameters of this model were evaluated with the root-mean-square deviation (rmsd) method. The average rmsd value between the experimental and calculated mass fraction was 0.1984% for the NRTL model. The rmsd values demonstrate that the NRTL model is suitable for description of phase behavior and can be applied to this system.

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“…Several equilibrium studies on physical extraction of different carboxylic acids such as propionic acid (Wasewar et al, 2010), nicotinic acid (Senol, 2000) lactic acid , citric acid (Uslu, 2008), butyric acid (Kumar et al, 2010), pyridine carboxylic acids (Datta and Kumar, 2012) etc., can be found in the literature. However, reported extraction studies on pyruvic acid are limited (Ma et al, 2005;Senol, 2006;Marti et al, 2011;Pal and Keshav, 2014;.…”

Section: Introductionmentioning

confidence: 99%

“…Kamlet et al (1983) have given the correlation (known as LSER model)based on solvatochromic parameters of the solvents that can predict physicochemical parameters of the solvents. Several successful applications of LSER modeling for the extraction of lactic acid , citric acid (Uslu, 2008), butyric acid (Kumar et al, 2010), pyridine carboxylic acids (Datta and Kumar., 2012), glycolic acid (Datta and Kumar, 2011), and so forth can be found in the literature. However, there are very few papers available in the literature where LSER modeling for physical extraction of pyruvic acid has been reported (Senol and Baslıoglu, 2012).…”

Section: Introductionmentioning

confidence: 99%

Liquid-liquid extraction equilibrium for pyruvic acid recovery: experimental data and modeling

Pal

Thakre

Keshav

et al. 2017

Braz. J. Chem. Eng.

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-Physical extraction studies of pyruvic acid from dilute aqueous solutions (0.025 kmol·m -3 to 0.200 kmol·m -3 ) using several pure solvents (tri-n-butylphosphate (TBP), 1-decanol, 1-octanol, toluene, Methylisobutylketone (MIBK), and n-heptane) and their binary mixtures are reported in this work. All the batch extraction experiments were carried out at isothermal conditions (T=303±1K) and the results are reported in terms of distribution coefficient (K D ). The results obtained by the equilibrium studies of the different extraction system were correlated with solvatochromic parameters of the solvents. A linear solvation energy relationship (LSER) model was applied to interpret the extraction equilibrium which specifically considers physical interactions. The values of the LSER model parameters for the extraction system were optimized by regression technique and the model equations have been proposed. Experimental and model values were in good agreement (RMSD < 0.1).Reported outcomes are useful in the selection of a suitable extraction system and understanding the extraction mechanism for the separation of pyruvic acid from dilute aqueous solutions.

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Extracion of citric acid in 2-octanol and 2-propanol solutions containing tomac: an equilibria and a LSER model

Cited by 8 publications

References 19 publications

Study on Extraction Separation of Thioarsenite Acid in Alkaline Solution by CO32--Type Tri-n-Octylmethyl-Ammonium Chloride

Study on Extraction Separation of Thioarsenite Acid in Alkaline Solution by CO32--Type Tri-n-Octylmethyl-Ammonium Chloride

Experimental Data of Citric Acid Extraction from Aqueous Solution with 1-Decanol by Using Liquid–Liquid Equilibrium

Liquid-liquid extraction equilibrium for pyruvic acid recovery: experimental data and modeling

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