Modeling of adsorption on porous activated carbons using SLD-ESD model with a pore size distribution

Xiaoning Yang, Carl T. Lira

Research output: Contribution to journalArticle

  • 5 Citations

Abstract

The simplified local density (SLD) approach using the Elliott, Suresh, Donohue (ESD) equation of state is developed to model the adsorption on porous activated carbons by consideration of the pore size distribution (PSD). The SLD-ESD approach is used to calculate the local adsorption amount for a given pore width. The total adsorption on porous materials is the sum of all local adsorption amounts over entire range of pore structure sizes. The adsorption of a pure component can be fitted well by this SLD-ESD model for a wide temperature range. The reasonability and reliability of PSDs obtained from different gas probes are characterized. The PSDs determined by the adsorption data of pure components have been used to predict the adsorption equilibria of binary mixtures. By applying to different systems for wide conditions, the predictive capacity of this model was examined. It is shown that the SLD-ESD theoretical model in conjunction with PSD analysis can provide a reasonable prediction for mixture adsorption.

LanguageEnglish (US)
Pages314-322
Number of pages9
JournalChemical Engineering Journal
Volume195-196
DOIs
StatePublished - Jul 1 2012

Profile

Density (specific gravity)
Activated carbon
Pore size
activated carbon
adsorption
Adsorption
modeling
size structure
Pore structure
Binary mixtures
Equations of state
equation of state
Porous materials
Gases
probe
prediction
gas

Keywords

  • Activated carbon
  • Adsorption
  • Equation of state
  • Pore size distribution
  • SLD theory

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Industrial and Manufacturing Engineering
  • Environmental Chemistry

Cite this

Modeling of adsorption on porous activated carbons using SLD-ESD model with a pore size distribution. / Yang, Xiaoning; Lira, Carl T.

In: Chemical Engineering Journal, Vol. 195-196, 01.07.2012, p. 314-322.

Research output: Contribution to journalArticle

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