Extraction of lactic, tartaric, succinic, and citric acids by trioctylamine.

太一, 佐藤; 渡辺,; 央, 中村

doi:10.2116/bunsekikagaku.34.9_559

Cited by 26 publications

(20 citation statements)

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“…Similar results were obtained by Wennersten [16] for the extraction of citric acid by Alamine 336 in a variety of diluents at 25 and 60EC where for the corresponding 35EC increase in temperature, distribution ratios decreased by as much as a factor of 6 and by Sato et al [18] for the extraction of lactic, tartaric, succinic, and citric acids by trilaurylamine in xylene at 20, 30,40, and 50EC where for a 30EC temperature increase, distribution ratios decreased by factors between 2 and 10, depending upon the type of acid.…”

Section: Introductionsupporting

confidence: 83%

Recovery of propionic acid by reactive extraction - 1. Equilibrium, effect of pH and temperature, water coextraction

Keshav

Wasewar

Chand

2009

Desalination and Water Treatment

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Recovery of propionic acid by reactive extraction -1. Equilibrium, effect of pH and temperature, water coextraction, Desalination and Water Treatment, 3:1-3, 91-98, A B S T R A C TReactive extraction is a prominent technique for recovery of carboxylic acids for dilute aqueous stream and fermentation broth. In the present paper, the effect of acid concentration, extractant concentration and type of diluent on extraction of propionic acid using tri-n-butyl phosphate (TBP) in methyl isobutyl ketone and 1-decanol was studied. Physical and chemical extraction experiments were conducted to study the influence of TBP in the respective diluents. TBP + MIBK was found to be an effective system with more than 25% improvement in extraction in comparison to TBP + 1-decanol, where no significant effect was obtained. The difference in solvation of TBP:acid complexes in respective diluents was explained in terms of physical properties of the diluents. Effect of pH, temperature and water coextraction was also studied using TBP in MIBK. Higher acid extraction was found when solution pH was lower than 4. The effect of temperature was not so predominant at the ranges studied (305-333 K). This suggests that the TBP + MIBK system can advantageously be employed over wider temperature ranges found at different sources. Another advantage of the TBP + MIBK system was due to its lower water coextraction percentage values (<5).

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Section: Introductionsupporting

confidence: 83%

Recovery of propionic acid by reactive extraction - 1. Equilibrium, effect of pH and temperature, water coextraction

Keshav

Wasewar

Chand

2009

Desalination and Water Treatment

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“…For this 358C rise in temperature, the distribution ratio Syzova et al 70 ORDER REPRINTS decreased by a factor of up to 6 times. Sato et al [9] studied the extraction of lactic, tartaric, succinic, and citric acid by TLA in xylene at 20, 30, 40, and 508C. For the 308C increase in temperature, there was a 2 -10-fold decrease in the extraction of the acid, depending upon the type of the acid and its concentration.…”

Section: Introductionmentioning

confidence: 99%

Extraction of Carboxylic Acids by ABC Extractants: Effects of Temperature, the Polarity of the Diluent, and the Ratio Between Extractant Components

Eyal

Vitner

Hazan

2004

Solvent Extraction and Ion Exchange

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A study was conducted of the temperature effect on the extraction of lactic and malic acid by acid-base couple (ABC) extractants in kerosene. Elevating the temperature from 308C to 808C decreases the extraction of both acids by ABC extractants comprising tricaprylyl amine (A336). The opposite effect is found for the extraction of lactic acid by primary aminecontaining ABC extractants. It seems that temperature effect in the extraction of lactic and malic acids by ABC extractants results, at least partially, from competition for H-bonding. The study has also tested the effect of diluent polarity in ABC extractants by replacing kerosene there with octanol. It has shown that increased polarity affects the extraction of 69 ORDER REPRINTS carboxylic acids mainly through stabilization of ion pairs and formation of H-bonds. Another studied effect was that of the ratio between the amine and the lipophilic acid in the ABC extractants. The results were found to depend on the acid-base properties, polarity, and structure of these components and on the properties of the extracted acid.

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“…Equation provides an important approach for the distribution of mandelic acid in molality according to the decomposition equilibrium. It is stated by Vaňura and Kuča and Sato et al that all possible combinations of ( i , j ) for i = 1, p and j = 1 are not necessary to consider. The change of K i,j org to amine concentration in changing conditions has not been proved by a clear approach and it is thought to vary depending on both the stoichiometry of complex formation and the conditional character of this constant.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Parametric Analysis of Mandelic Acid Separation from Aqueous Solutions by Using Secondary Amine Mixture (Amberlite LA-2) in Various Diluents

Kiriş

Aşçı

2019

J. Chem. Eng. Data

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Mandelic acid (MA) an α hydroxycarboxylic acid found in bitter almonds. It has gained importance in recent years, especially due to its use in the cosmetic industry. Separation processes of mandelic acid have a critical point in the production stages obtained the product form. In this study, extraction of mandelic acid from aqueous solutions was carried out using five different concentrations of Amberlite LA-2 (LA2) solution. Dimethyl phthalate (DMP), methyl isobutyl ketone (MIBK), 2-octanone, 1-octanol, n-pentane, octyl acetate, and toluene were used as diluents in the organic phase. The batch extraction results of mandelic acid were obtained for process design. The data were analyzed with respect to loading factor (Z), distribution coefficient (D), and extraction efficiency (E). In addition, the overall extraction constants, K 11, K 12, K 13, and K 23 have been determined for acid–amine complex. The maximum removal of mandelic acid in this study is 92.75% with MIBK and 0.57 mol·kg–1 initial concentration of Amberlite LA-2.

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Extraction of lactic, tartaric, succinic, and citric acids by trioctylamine.

Cited by 26 publications

References 0 publications

Recovery of propionic acid by reactive extraction - 1. Equilibrium, effect of pH and temperature, water coextraction

Recovery of propionic acid by reactive extraction - 1. Equilibrium, effect of pH and temperature, water coextraction

Extraction of Carboxylic Acids by ABC Extractants: Effects of Temperature, the Polarity of the Diluent, and the Ratio Between Extractant Components

Parametric Analysis of Mandelic Acid Separation from Aqueous Solutions by Using Secondary Amine Mixture (Amberlite LA-2) in Various Diluents

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