Measurement and correlation of high pressure vapor‒liquid equilibria in CO2‒ethanol‒essential oil ternary systems applied to supercritical counter‒current extractions

Yoshiki Obonai, Yusuke Ueno, Yuki Hoshino, Masaki Ota, Yoshiyuki Sato, Hiroshi Inomata

Research output: Contribution to journalArticle

Abstract

Vapor‒liquid equilibrium measurements in (CO2 (1)‒ethanol(2)‒myrcene(3)) and CO2 (1)‒ethanol(2)‒linalool(3)) ternary systems were carried out at temperatures of 333‒373 K and pressures of 6‒10 MPa with a continuous flow apparatus for selective separation of essential oil components. The experimental data were correlated with the results calculated with the Peng‒Robinson equation of state combined with the van der Waals mixing rule based on fundamental critical properties estimated by a group contribution method. In counter-current extractions in CO2(1)‒ethanol(2)‒ myrcene(3)‒linalool(3) systems for myrcene and linalool, the purity of myrcene reached about 90 mol% at 333 K and 6 MPa from an equimolar feed of myrcene and linalool. From the results of supercritical counter-current extractions, myrcene was separated from linalool, with a purity of 91 mol% for myrcene in the vapor phase.

Original languageEnglish
Pages (from-to)238-243
Number of pages6
Journalkagaku kogaku ronbunshu
Volume45
Issue number6
DOIs
Publication statusPublished - 2019 Jan 1

Keywords

  • Equation of State (EoS)
  • Extraction and Separation
  • Vapor‒Liquid Equilibrium (VLE)

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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