High-Pressure Vapor–Liquid Equilibria Measurement of Carbon Dioxide–Ethanol–Water Systems and Prediction with the Peng-Robinson Equation of State for Supercritical Fluid Extraction and Separation Processes

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  • Nomura Shun
    Department of Chemical Engineering, Graduate school of Engineering, Tohoku University
  • Ota Masaki
    Department of Chemical Engineering, Graduate school of Engineering, Tohoku University Department of Frontier Science for Advanced Environment, Graduate school of Environmental Studies, Tohoku University
  • Sato Yoshiyuki
    Department of Chemical Engineering, Graduate school of Engineering, Tohoku University Department of Applied Chemistry and Environment, Tohoku Institute of Technology
  • Inomata Hiroshi
    Department of Chemical Engineering, Graduate school of Engineering, Tohoku University

Bibliographic Information

Other Title
  • 超臨界精留に向けた二酸化炭素–エタノール–水系の高圧気液平衡測定とPeng-Robinson状態方程式による相関
  • チョウリンカイセイリュウ ニ ムケタ ニサンカ タンソ-エタノール-スイケイ ノ コウアッキエキ ヘイコウ ソクテイ ト Peng-Robinson ジョウタイ ホウテイシキ ニ ヨル ソウカン

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Abstract

<p>The high-pressure vapor–liquid equilibria of a CO2–ethanol–water system was measured using a flow-type device at temperatures of 313–353 K and a pressure of 8 MPa. With the obtained vapor–liquid equilibria data and the data of a previous report (Sato et al., 2019), the applicability of a correlation method using the van der Waals one fluid (vdW1) mixing rule and Wong–Sandler (WS) mixing rule in the Peng–Robinson equation of state was confirmed. From an estimation made using the temperature-dependent approximation formula of fitting parameters determined by the correlation, the applicability of both the vdW1 mixing rule and WS mixing rule to CO2–ethanol–water systems was suggested.</p>

Journal

  • KAGAKU KOGAKU RONBUNSHU

    KAGAKU KOGAKU RONBUNSHU 49 (3), 51-55, 2023-05-20

    The Society of Chemical Engineers, Japan

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