Oldshoe-Rushton column in supercritical fluid extraction

Antero Laitinen (Corresponding Author), Juha Kaunisto

    Research output: Contribution to journalArticleScientificpeer-review

    6 Citations (Scopus)


    The performance of a mechanically agitated Oldshue–Rushton column using carbon dioxide solvent at 10 MPa and 313 K to extract ethanol from aqueous feed was investigated. The overall mass-transfer coefficient K od a, the height equivalent to a theoretical stage (HETS), dispersed phase holdup, as well as the column capacity data were measured as a function of solvent-to-feed ratio and rotor speed. The values of overall mass transfer coefficient K od a generally ranged from 0.009 to 0.012 s−1, and the values of the HETS ranged from 0.44 to 0.74 m. The total throughput of the Oldshue–Rushton column without agitation was approximately 68 m3·h−1·m−2, whereas at 300 rpm the total throughput was approximately 48 m3·h−1·m−2.
    Original languageEnglish
    Pages (from-to)1859-1872
    Number of pages14
    JournalSeparation Science and Technology
    Issue number9
    Publication statusPublished - 1999
    MoE publication typeA1 Journal article-refereed


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