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

  • Dharm Pal ORCID logo and Amit Keshav EMAIL logo
Published/Copyright: January 6, 2015
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International Journal of Chemical Reactor Engineering
From the journal International Journal of Chemical Reactor Engineering Volume 13 Issue 1

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 0.419m3mol−1S−1.

Keywords: reactive extraction; pyruvic acid; kinetic studies; tributylamine; n-butyl acetate

Notations

PA

Pyruvic acid

TBA

Tributylamine

[A]

Concentration of acid (kmol/m3)

[B]

Concentration of extractant (kmol/m3)

RA

Specific rate of extraction (kmol/m2 s)

DA

Diffusivity of acid in the solution (cm2/s)

kmn

Reaction rate constant [1/s (kmol/m3)1-(m + n)]

k2

Second-order reaction rate constant (1/s)

[Bo]

Concentration of the TBA in the bulk of solution (kmol/m3)

[A*]

Equilibrium concentration of acid in the organic phase (kmol/m3)

m

Order of reaction with respect to acid

n

Order of reaction with respect to TBA

A

Interfacial area (m2)

t

Time (s)

kL

Physical mass transfer coefficient (m/s)

Subscripts
aq

Aqueous phase

org

Organic phase

o

Initial

Superscripts
*

Equilibrium

References

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Published Online: 2015-1-6
Published in Print: 2015-3-1

©2015 by De Gruyter

Articles in the same Issue

  1. Frontmatter
  3. A Novel Catalyst Preparation Technique to Improve Performance of Ni/γ-Al2O3 Catalysts in Partial Oxidation of Methane
  4. Characterization and Deactivation Study of Mixed Vanadium and Potassium Oxide Supported on Microemulsion-Mediated Titania Nanoparticles as Catalyst in Oxidative Dehydrogenation of Propane
  5. Effect of Titania Loading on Properties and Catalytic Activity of Nanostructured Phosphate–Vanadia-Impregnated Silica–Titania Oxidative–Acidic Bifunctional Catalyst
  6. Effects of Partial Slip on Chemically Reactive Solute Distribution in MHD Boundary Layer Stagnation Point Flow Past a Stretching Permeable Sheet
  7. Heat and Mass Transfer of Thermophoretic MHD Flow of Powell–Eyring Fluid over a Vertical Stretching Sheet in the Presence of Chemical Reaction and Joule Heating
  8. Integration of Optimization and Model Predictive Control of an Intensified Continuous Three-Phase Catalytic Reactor
  9. Kinetics of Reactive Extraction of Pyruvic Acid Using Tributylamine Dissolved in n-Butyl Acetate
  10. Mathematical Modeling, Verification and Optimization for Catalytic Membrane Esterification Micro-reactor
  11. Metal-Foam-Supported Pd/Al2O3 Catalysts for Catalytic Combustion of Methane: Effect of Interaction between Support and Catalyst
  12. Simulation of Soot Size Distribution in a Counterflow Flame
  13. Study on Effective Radial Thermal Conductivity of Gas Flow through a Methanol Reactor
  14. Surface Functionalization and Magnetic Motion of Hydrophobic Magnetic Nanoparticles with Different Sizes
  15. Towards Production of γ-valerolactone via Hydrogenation of Aqueous Levulinic Acid
  16. Nitrogen Removal to Minimize Energy Consumption of the Two WWTPs Choutrana II and Menzel Bourguiba in Tunisia
https://doi.org/10.1515/ijcre-2014-0117
Keywords for this article
reactive extraction; pyruvic acid; kinetic studies; tributylamine; n-butyl acetate

Articles in the same Issue

  1. Frontmatter
  3. A Novel Catalyst Preparation Technique to Improve Performance of Ni/γ-Al2O3 Catalysts in Partial Oxidation of Methane
  4. Characterization and Deactivation Study of Mixed Vanadium and Potassium Oxide Supported on Microemulsion-Mediated Titania Nanoparticles as Catalyst in Oxidative Dehydrogenation of Propane
  5. Effect of Titania Loading on Properties and Catalytic Activity of Nanostructured Phosphate–Vanadia-Impregnated Silica–Titania Oxidative–Acidic Bifunctional Catalyst
  6. Effects of Partial Slip on Chemically Reactive Solute Distribution in MHD Boundary Layer Stagnation Point Flow Past a Stretching Permeable Sheet
  7. Heat and Mass Transfer of Thermophoretic MHD Flow of Powell–Eyring Fluid over a Vertical Stretching Sheet in the Presence of Chemical Reaction and Joule Heating
  8. Integration of Optimization and Model Predictive Control of an Intensified Continuous Three-Phase Catalytic Reactor
  9. Kinetics of Reactive Extraction of Pyruvic Acid Using Tributylamine Dissolved in n-Butyl Acetate
  10. Mathematical Modeling, Verification and Optimization for Catalytic Membrane Esterification Micro-reactor
  11. Metal-Foam-Supported Pd/Al2O3 Catalysts for Catalytic Combustion of Methane: Effect of Interaction between Support and Catalyst
  12. Simulation of Soot Size Distribution in a Counterflow Flame
  13. Study on Effective Radial Thermal Conductivity of Gas Flow through a Methanol Reactor
  14. Surface Functionalization and Magnetic Motion of Hydrophobic Magnetic Nanoparticles with Different Sizes
  15. Towards Production of γ-valerolactone via Hydrogenation of Aqueous Levulinic Acid
  16. Nitrogen Removal to Minimize Energy Consumption of the Two WWTPs Choutrana II and Menzel Bourguiba in Tunisia
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