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Measurement and Modeling of Phase Equilibria in Systems Containing Water, Xylose, Furfural, and Acetic Acid

  • Nadia Galeotti
    Nadia Galeotti
    Laboratory of Engineering Thermodynamics (LTD), University of Kaiserslautern, 67663, Kaiserslautern, Germany
  • Jakob Burger*
    Jakob Burger
    Chair for Chemical Process Engineering, Technical University of Munich, Campus Straubing for Biotechnology and Sustainability, 94315 Straubing, Germany
    *E-mail: [email protected]
    More by Jakob Burger
  • , and 
  • Hans Hasse
    Hans Hasse
    Laboratory of Engineering Thermodynamics (LTD), University of Kaiserslautern, 67663, Kaiserslautern, Germany
    More by Hans Hasse
Cite this: J. Chem. Eng. Data 2019, 64, 6, 2634–2640
Publication Date (Web):April 12, 2019
https://doi.org/10.1021/acs.jced.9b00095
Copyright © 2019 American Chemical Society

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    Abstract

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    Wood hydrolysates obtained in biotechnological processes are typically aqueous solutions that contain, among others, sugars, acetic acid, and furfural. Only little is known on the influence of the sugars on the phase equilibria in those mixtures. Therefore, liquid–liquid equilibria (LLE), solid–liquid equilibria (SLE), and solid–liquid–liquid equilibria (SLLE) in the system (water (W) + xylose (X) + furfural (F)) were studied in the present work at 298.15 and 333.15 K. Additionally, the LLE in the system (W + X + F + acetic acid (AA)) was studied at 298.15 K. The results show that, up to the solubility limit of xylose, adding xylose to mixtures of (W + F) hardly influences the width of the miscibility gap, and that there is practically no xylose in the furfural-rich phase. However, the miscibility gap in the ternary system (W + F + AA) is slightly widened by the addition of xylose. The experimental data on the phase equilibria from the present work were described using the nonrandom two-liquid model. The model describes the experimental data well.

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    The Supporting Information is available free of charge on the ACS Publications website at DOI: 10.1021/acs.jced.9b00095.

    • Composition of feed solutions, both for LLE, SLE, and SLLE measurements of the ternary system (W + X + F) and for the LLE measurements of the quaternary system (W + X + F + AA); all information on the simulation of the phase equilibria, including the pure component vapor pressures, numerical results, and a statistical evaluation of the deviations (PDF)

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    Cited By

    This article is cited by 3 publications.

    1. Marcos L. Corazza, Julia Trancoso. Phase equilibria modeling of biorefinery-related systems: a systematic review. Chemical Product and Process Modeling 2022, 17 (5) , 499-529. https://doi.org/10.1515/cppm-2020-0119
    2. İsmaı̇l Tosun. Liquid–liquid and vapor–liquid–liquid equilibrium. 2021, 509-559. https://doi.org/10.1016/B978-0-12-820530-3.00021-0
    3. İsmaı̇l Tosun. Solid–liquid equilibrium. 2021, 561-599. https://doi.org/10.1016/B978-0-12-820530-3.00022-2

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