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Liquid-liquid equilibrium data in aqueous solutions of propionic and butyric acids with 1-heptanol at T=(298.15, 308.15, and 318.15) K

  • Separation Technology, Thermodynamics
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Abstract

Liquid-liquid phase equilibrium (LLE) data were determined for the (water+propionic or butyric acid+1-heptanol) ternary systems at T=(298.15, 308.15, and 318.15) K and p=101.3 kPa. For both systems, a type-1 LLE phase diagram was obtained. The quality of the experimental LLE data was determined through the Othmer-Tobias and Bancroft equations. The experimental tie-lines were fitted using the UNIQUAC and NRTL correlation models. For the studied systems, a comparison was made between the experimental and correlated distribution coefficients and separation factors. The LSER model of Katritzky was applied to obtain the contributions of intermolecular interactions in these systems.

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Authors and Affiliations

  1. Department of Chemistry, Faculty of Science, University of Guilan, Rasht, Iran

    Ali Ghanadzadeh Gilani, Seyedeh Laleh Seyed Saadat & Elham Nasiri-Touli

  2. Department of Chemical Engineering, University of Guilan, Rasht, Iran

    Hossein Ghanadzadeh Gilani

  3. Department of Chemistry, University Campus 2, University of Guilan, Rasht, Iran

    Mahrokh Peer

Authors
  1. Ali Ghanadzadeh Gilani
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  2. Hossein Ghanadzadeh Gilani
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  3. Seyedeh Laleh Seyed Saadat
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  4. Elham Nasiri-Touli
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  5. Mahrokh Peer
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Correspondence to Ali Ghanadzadeh Gilani.

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Gilani, A.G., Gilani, H.G., Saadat, S.L.S. et al. Liquid-liquid equilibrium data in aqueous solutions of propionic and butyric acids with 1-heptanol at T=(298.15, 308.15, and 318.15) K. Korean J. Chem. Eng. 33, 1408–1415 (2016). https://doi.org/10.1007/s11814-015-0278-5

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  • DOI: https://doi.org/10.1007/s11814-015-0278-5

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