Modeling and optimization of reactive extraction equilibria and kinetic study of gallic acid using tributyl phosphate in isoamyl alcohol

Joshi, Nishant; Keshav, Amit; Poonia, Anil K.

doi:10.1080/01496395.2020.1751200

Cited by 10 publications

(8 citation statements)

References 29 publications

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Section: Methodsmentioning

confidence: 99%

“…The reactive extraction mechanism of HA with an organophosphorus extractant (TBP) in diluents can be described as The phosphoryl group in TBP makes it a strong Lewis base; therefore, TBP reacts with a hydrogen bond to the acid molecule at the interface between the aqueous and organic phases, and an acid–TBP complex (HA m –TBP n ) is formed. This complex solubilizes into the organic phase. , These mechanisms of physical and reactive extraction are also symbolized in Figure .…”

Section: Methodsmentioning

confidence: 99%

“…A carboxylic acid in the aqueous solution dissociates depending on the value of pK a (ionization coefficient) or it is present in the form of an undissociated acid molecule. The physical extraction brings about the partitioning of the undissociated acid molecule in the aqueous phase, which is partitioned into the organic phase: 46,47 V HA HA aq org (1) In this equation, subscripts of org and aq signify organic and aqueous phases, respectively. The reactive extraction mechanism of HA with an organophosphorus extractant (TBP) in diluents can be described as 9 The phosphoryl group in TBP makes it a strong Lewis base; therefore, TBP reacts with a hydrogen bond to the acid molecule at the interface between the aqueous and organic phases, and an acid−TBP complex (HA m −TBP n ) is formed.…”

Section: Methodsmentioning

confidence: 99%

“…This complex solubilizes into the organic phase. 47,48 These mechanisms of physical and reactive extraction are also symbolized in Figure 1.…”

Section: Methodsmentioning

confidence: 99%

See 3 more Smart Citations

Reactive Extraction of Monocarboxylic Acids (Formic, Acetic, and Propionic) Using Tributyl Phosphate in Green Solvents (Cyclopentyl Methyl Ether and 2-Methyltetrahydrofuran)

2020

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The separation of monocarboxylic acids (formic, acetic, and propionic) from aqueous solutions is still a current issue for both scientific and industrial fields. Reactive extraction with an adequate extractant and diluent system has been focused and researched as an alternative to other separation techniques. Lately, the use of green solvents instead of conventional organic solvents in carboxylic acid extraction has received a great amount of attention. In this aspect, in the present research, the recovery of formic acid (FA), acetic acid (AA), and propionic acid (PA) from aqueous solutions was carried out by reactive extraction with green solvents. In the current reactive study, tributyl phosphate (TBP) has been used as an extractant, and green solvents, cyclopentyl methyl ether (CPME) and 2-methyltetrahydrofuran (2-MeTHF), have been utilized as diluents. The effect of TBP concentration (0.7–5.2 mol·kg–1) on the extraction power was investigated. In addition, the effects of the use of two different green solvents on extraction were also investigated. Distribution coefficient (D), extraction efficiency (E%), and loading factor (Z) values were ascertained and interpreted. D, E, and Z were determined to be in the ranges of 0.289–4.003, 22.41–78.41%, and 0.198–2.218, respectively. It was also observed that, for the studied range, the extractant concentration was increased to be effective when using CPME as the diluent, but a similar effect was not seen when 2-MeTHF was used. However, 2-MeTHF was observed to be a more effective solvent for physical extraction. The extraction efficiency in both diluents increased in the order of PA > AA ≥ FA.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…This complex solubilizes into the organic phase. 47,48 These mechanisms of physical and reactive extraction are also symbolized in Figure 1.…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Reactive Extraction of Monocarboxylic Acids (Formic, Acetic, and Propionic) Using Tributyl Phosphate in Green Solvents (Cyclopentyl Methyl Ether and 2-Methyltetrahydrofuran)

2020

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“…HGA was adsorbed onto Na-montmorillonite [14], and a coal-based activated carbon [15]. HGA was extracted by molecular imprinted polymers [16], ethanol [17], tributyl phosphate [18,19], trioctyl amine and aliquat 336 [20,21]. All of these separation methods have their advantages and disadvantages in terms of selectivity, simplicity, performance, and cost [22,23].…”

Section: Introductionmentioning

confidence: 99%

The recovery of Gallic acid with Triphenylphosphine Oxide and modelling with Artificial Intelligence

Aras

Demir

Gök

et al. 2022

Preprint

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In this study, gallic acid was separated by triphenylphosphine oxide in the presence of conventional solvents. Triphenylphosphine oxide is an organophosphorus extractant and highly selective towards carboxylic acids. Reactive extraction results were compared with physical extraction results. The extraction efficiencies reached up to 61, 76, 86, 67, and 84 % in the presence of triphenylphosphine oxide with oleyl alcohol, dimethyl adipate, isobutanol, methyl isopropyl ketone, and methyl ethyl ketone, respectively. Further, the number of theoretical units and the solvent to feed ratio were calculated for the practical design of a liquid-liquid extraction column. Roughly 2 to 4 theoretical units were calculated to meet the targeted extraction efficiencies. Gradient boosting algorithm showed a good performance to predict the results. This study is the first to investigate the reactive extraction of gallic acid by triphenylphosphine oxide, and include fundamental information for the recovery of gallic acid.

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A green dye wastewater treatment process: Complex extraction of Telon yellow 4R from dye wastewater and its application in nylon fabric dyeing

Yu,

Zheng,

Wang

2023

Env Prog and Sustain Energy

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Complex extraction, which has the characteristics of high efficiency and selectivity of chemicals, has unique advantages in dye wastewater treatment. In the paper, a green closed‐loop dye wastewater treatment route for dyeing industry is re‐evaluated by studying the complex extraction and stripping of Telon yellow 4B, and dyeing test of regenerated dye. FT‐IR characteristic peaks of the initial organic phase and the regenerated organic phase are consistent, and the dye can be migrated from the loaded organic phase to the aqueous phase after stripping. The concentration of dye in the aqueous phase and extraction conditions have a significant effect on extraction rate, especially the aqueous‐organic phase ratio and the pH value of the aqueous phase. Meanwhile, the stripping conditions have a marked impact on stripping rate, among which NaOH dosage is an important factor. The regenerated dye solution and the freshly prepared dye solution at same concentration have the same color shade and K/S value, and the color fastness of dyed fabrics is all above Grade 4. High extraction rate, high stripping rate, excellent reusability of regenerated organic phase, and the dyeing performance of the regenerated dye prove that complex extraction is a green dye wastewater treatment process with the practical feasibility.

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Modeling and optimization of reactive extraction equilibria and kinetic study of gallic acid using tributyl phosphate in isoamyl alcohol

Cited by 10 publications

References 29 publications

Reactive Extraction of Monocarboxylic Acids (Formic, Acetic, and Propionic) Using Tributyl Phosphate in Green Solvents (Cyclopentyl Methyl Ether and 2-Methyltetrahydrofuran)

Reactive Extraction of Monocarboxylic Acids (Formic, Acetic, and Propionic) Using Tributyl Phosphate in Green Solvents (Cyclopentyl Methyl Ether and 2-Methyltetrahydrofuran)

The recovery of Gallic acid with Triphenylphosphine Oxide and modelling with Artificial Intelligence

A green dye wastewater treatment process: Complex extraction of Telon yellow 4R from dye wastewater and its application in nylon fabric dyeing

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