Theoretical study of adsorption on activated carbon from a supercritical fluid by the SLD-ESD approach

Xiaoning Yang, Carl T. Lira

    Research output: Research - peer-reviewArticle

    • 20 Citations

    Abstract

    The simplified local density (SLD) theory is combined with the Elliott, Suresh, Donohue (ESD) equation of state to model adsorption of solutes from supercritical carbon dioxide onto activated carbon. The model is fit to adsorption isotherms of toluene + CO2 and benzene + CO2 over wide temperature and pressure ranges by adjusting only two temperature-independent parameters for each binary. We present a systematic analysis of adsorption characteristics for finite and infinite dilution conditions in supercritical CO2 by selecting the toluene/CO 2 as a model system. Competitive adsorption between solvent and solute is investigated. The effects of temperature, pressure, bulk solute concentration, and the adsorbent structure size on the adsorption behavior are presented.

    LanguageEnglish (US)
    Pages191-200
    Number of pages10
    JournalJournal of Supercritical Fluids
    Volume37
    Issue number2
    DOIs
    StatePublished - Apr 2006

    Profile

    Supercritical fluids
    Carbon Monoxide
    Activated carbon
    Adsorption
    supercritical fluids
    activated carbon
    adsorption
    Temperature
    solutes
    temperature
    Toluene
    toluene
    Benzene
    Adsorption isotherms
    Equations of state
    Carbon Dioxide
    Adsorbents
    Dilution
    Carbon dioxide
    adsorbents

    Keywords

    • Adsorption
    • Equation of state
    • Local density
    • Supercritical fluid

    ASJC Scopus subject areas

    • Physical and Theoretical Chemistry
    • Materials Science (miscellaneous)
    • Physics and Astronomy (miscellaneous)

    Cite this

    Theoretical study of adsorption on activated carbon from a supercritical fluid by the SLD-ESD approach. / Yang, Xiaoning; Lira, Carl T.

    In: Journal of Supercritical Fluids, Vol. 37, No. 2, 04.2006, p. 191-200.

    Research output: Research - peer-reviewArticle

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