Interfacial mass transfer in ternary liquid-liquid systems

Kai Fabian Kruber, Marius Krapoth, Tim Zeiner

Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

Abstract

In this work, the interfacial mass transfer in two extraction systems, namely acetone-toluene-water (System I) and hexane-heptane-methanol (System II), was examined experimentally and theoretically. The interfacial mass transfer was experimentally examined by using a Nitsch-Cell. As theoretical approach the density gradient theory (DGT) in combination with the Koningveld-Kleintjens (KK) model was used. At first, the KK-model was used to model the liquid-liquid equilibrium of System I and System II. In combination of the KK-model with the DGT, the interfacial tension was modelled by fitting the influence parameter of the DGT. To estimate the required mutual mobility coefficients in each system, bulk diffusion coefficient coefficients were used. It was shown, that the DGT in combination with a thermodynamic model and experimental information of the bulk diffusion coefficients and the system's interfacial tension is able to model the interfacial mass transfer. Moreover, it can be stated that the DGT predicts a high enrichment of acetone in System I and this enrichment has an influence on the mass transfer.

Originalspracheenglisch
Seiten (von - bis)54-63
Seitenumfang10
FachzeitschriftFluid phase equilibria
Jahrgang440
DOIs
PublikationsstatusVeröffentlicht - 25 Mai 2017

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mass transfer
Mass transfer
Liquids
gradients
liquids
Acetone
acetone
Surface tension
interfacial tension
diffusion coefficient
Heptanes
Toluene
Hexanes
Heptane
coefficients
heptanes
Hexane
Methanol
toluene
methyl alcohol

Schlagwörter

    ASJC Scopus subject areas

    • !!Chemical Engineering(all)
    • !!Physics and Astronomy(all)
    • !!Physical and Theoretical Chemistry

    Dies zitieren

    Interfacial mass transfer in ternary liquid-liquid systems. / Kruber, Kai Fabian; Krapoth, Marius; Zeiner, Tim.

    in: Fluid phase equilibria, Jahrgang 440, 25.05.2017, S. 54-63.

    Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

    Kruber, Kai Fabian ; Krapoth, Marius ; Zeiner, Tim. / Interfacial mass transfer in ternary liquid-liquid systems. in: Fluid phase equilibria. 2017 ; Jahrgang 440. S. 54-63.
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    N2 - In this work, the interfacial mass transfer in two extraction systems, namely acetone-toluene-water (System I) and hexane-heptane-methanol (System II), was examined experimentally and theoretically. The interfacial mass transfer was experimentally examined by using a Nitsch-Cell. As theoretical approach the density gradient theory (DGT) in combination with the Koningveld-Kleintjens (KK) model was used. At first, the KK-model was used to model the liquid-liquid equilibrium of System I and System II. In combination of the KK-model with the DGT, the interfacial tension was modelled by fitting the influence parameter of the DGT. To estimate the required mutual mobility coefficients in each system, bulk diffusion coefficient coefficients were used. It was shown, that the DGT in combination with a thermodynamic model and experimental information of the bulk diffusion coefficients and the system's interfacial tension is able to model the interfacial mass transfer. Moreover, it can be stated that the DGT predicts a high enrichment of acetone in System I and this enrichment has an influence on the mass transfer.

    AB - In this work, the interfacial mass transfer in two extraction systems, namely acetone-toluene-water (System I) and hexane-heptane-methanol (System II), was examined experimentally and theoretically. The interfacial mass transfer was experimentally examined by using a Nitsch-Cell. As theoretical approach the density gradient theory (DGT) in combination with the Koningveld-Kleintjens (KK) model was used. At first, the KK-model was used to model the liquid-liquid equilibrium of System I and System II. In combination of the KK-model with the DGT, the interfacial tension was modelled by fitting the influence parameter of the DGT. To estimate the required mutual mobility coefficients in each system, bulk diffusion coefficient coefficients were used. It was shown, that the DGT in combination with a thermodynamic model and experimental information of the bulk diffusion coefficients and the system's interfacial tension is able to model the interfacial mass transfer. Moreover, it can be stated that the DGT predicts a high enrichment of acetone in System I and this enrichment has an influence on the mass transfer.

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