Phase equilibria of palm oil, palm kernel oil, and oleic acid+supercritical carbon dioxide and modeling using Peng-Robinson EOS

Seung Ah Hong, Jae Duck Kim, Jaehoon Kim, Jeong Won Kang, Ik Joong Kang

    Research output: Contribution to journalArticlepeer-review

    18 Citations (Scopus)

    Abstract

    Vapor-liquid equilibria of the binary supercritical carbon dioxide (scCO2)+oleic acid, scCO2+palm oil, and scCO2+palm kernel oil were measured at a wide range of temperatures from 333.2 to 373.2K and pressures from 8.5 to 35MPa in a circulation-type phase equilibrium apparatus. The samples from liquid and vapor phases were analyzed using UV-vis spectrometer and a liquid hold-up equipment. The phase equilibrium data were correlated with Peng-Robinson Equation of State (PR-EOS) using Wong-Sandler mixing rule and optimum values of binary interaction parameters were determined. The relative deviation between experimental data and predicted data was in the range of 6.9-8.7%, suggesting that the PR-EOS with Wong-Sandler mixing rule is capable of predicting the vapor-liquid equilibria of oleic acid + scCO2, palm oil+scCO2, and palm kernel oil + scCO2.

    Original languageEnglish
    Pages (from-to)859-865
    Number of pages7
    JournalJournal of Industrial and Engineering Chemistry
    Volume16
    Issue number5
    DOIs
    Publication statusPublished - 2010 Sept

    Bibliographical note

    Funding Information:
    This work was financially supported by Korea Institute of Science and Technology (KIST) for the supercritical fluid research.

    Keywords

    • Equilibrium
    • Oleic acid
    • Palm kernel oil
    • Palm oil
    • Peng-Robinson Equation of State (PR-EOS)
    • Supercritical

    ASJC Scopus subject areas

    • General Chemical Engineering

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