Equilibrium studies on reactive extraction of glycine with di(2‐ethylhexyl) phosphoric acid dissolved in n‐octanol, butyl acetate and solvent oil

In this paper the reactive extraction of some dicarboxylic acids (oxalic acid, malonic acid, succinic acid, glutaric acid, and adipic acid) have been studied. These acids have been extracted by Amberlite LA-2 in butyl acetate using a modified extraction cell of the Lewis type. Mechanism, limiting steps, and kinetic of the mass transfer process have been settled.

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Kinetics of Reactive Extraction of Pyruvic Acid Using Tributylamine Dissolved in n-Butyl Acetate

International Journal of Chemical Reactor Engineering ◽

10.1515/ijcre-2014-0117 ◽

2015 ◽

Vol 13 (1) ◽

pp. 63-69 ◽

Cited By ~ 8

Author(s):

Dharm Pal ◽

Amit Keshav

Keyword(s):

Aqueous Solution ◽

Rate Constant ◽

Pyruvic Acid ◽

Butyl Acetate ◽

Volume Ratio ◽

Kinetic Studies ◽

Extraction Process ◽

Reactive Extraction ◽

Kinetic Measurements ◽

Kinetics Of

Abstract Studies have been made on the kinetics accompanied with mass transfer for the pyruvic acid/tributylamine (TBA)/n-butyl acetate system to investigate the effectiveness of reactive extraction for the separation of pyruvic acid from the aqueous solution. In the present work, kinetic studies, needed for the design of a recovery unit, were carried out using aqueous solution of pyruvic acid. TBA (conc. range 0.420–2.099 kmol/m3) dissolved in n-butyl acetate (conc. range 50–90%) was used as an extractant. The effect of reactant concentration, the effect of stirring speed and the effect of phase volume ratio on the extraction process were investigated. The kinetic parameters such as reaction order and rate constant were calculated. Kinetic measurements showed that the reaction is of second order occurring in the diffusion film and was found to be independent of hydrodynamic conditions. Rate constant was evaluated to be $0.419\,{{\rm{m}}^3}{\rm{mo}}{{\rm{l}}^{- 1}}{{\rm{S}}^{- 1}}$ .

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Equilibrium studies of the extraction of divalent metals from nitrate media with di-(2ethylhexyl) phosphoric acid

Journal of Inorganic and Nuclear Chemistry ◽

10.1016/0022-1902(81)80114-5 ◽

1981 ◽

Vol 43 (12) ◽

pp. 3351-3356 ◽

Cited By ~ 93

Author(s):

I. Komasawa ◽

T. Otake ◽

Y. Higaki

Keyword(s):

Phosphoric Acid ◽

Equilibrium Studies ◽

Divalent Metals

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Equilibrium & kinetic studies of reactive extraction of trans-aconitic acid using sunflower oil with tri-n-octylamine

International Journal of Chemical Reactor Engineering ◽

10.1515/ijcre-2021-0107 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Rajesh Nimmakayala ◽

Dharm Pal ◽

Dhananjay Singh ◽

Abhinesh Kumar Prajapati

Keyword(s):

Sunflower Oil ◽

Fermentation Broth ◽

Kinetic Studies ◽

Reactive Extraction ◽

Equilibrium Studies ◽

Aconitic Acid ◽

Equilibrium And Kinetics ◽

Loading Ratio ◽

Stirred Cell ◽

Complex Formations

Abstract In order to design an efficient extraction system for the separation of biochemically produced trans-aconitic acid (TAH) from fermentation broth; equilibrium and kinetics of reactive extraction of TAH from aqueous solutions was investigated using tri-n-octylamine (TOA) as an extractant and sunflower oil as a diluent. Through the equilibrium studies stoichiometry (acid, extractant) of complex formations was determined with the help of loading ratio. Formation of (1, 1), (2, 1), & (3, 1) stoichiometry complexes were observed having complexation constants values 179.73 kmol−1 m3, 9512.58 kmol−2 m6, and 614,407.02 kmol−3 m9, respectively. Kinetics experiments were performed in Lewis type stirred cell and results confirmed that reaction between TAH and TOA in sunflower oil fall in regime 1, i.e. slow reaction occurring in bulk organic phase. The overall order of reaction is pseudo first order with rate constant (K mn ) 1.78 × 10−5 (kmol m−3)−0.71 s−1 and physical mass transfer coefficient (K l ) 4.22 × 10−5 m s−1.

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