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

Xiaoning Yang, Carl T. Lira

Research output: Contribution to journalArticle

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

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: Contribution to journalArticle

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