Adsorption and desorption kinetics for hydrophilic and hydrophobic vapors on activated carbon

A.J. Fletcher, Y. Yuzak, K.M. Thomas

Research output: Contribution to journalArticle

119 Citations (Scopus)

Abstract

Adsorption dynamics are of fundamental importance in applications of adsorbents in real situations. The adsorption/desorption characteristics of a series of adsorbates, with varying hydrophilic/hydrophobic and structural characteristics, for activated carbon BAX950, were investigated for temperatures in the range 288-323 K. These data provide a comprehensive kinetic study of adsorption/desorption for an activated carbon. The results are discussed in relation to the adsorbent pore structure and functional group concentration, adsorptive structure and adsorption mechanism. The study provides evidence for a compensation effect where activation energy and ln(pre-exponential factor) parameters obtained from the Arrhenius equation exhibit a linear correlation.
Original languageEnglish
Pages (from-to)989-1004
Number of pages15
JournalCarbon
Volume44
Issue number5
DOIs
Publication statusPublished - Apr 2006

Keywords

  • activated carbon
  • adsorption
  • activation energy
  • diffusion
  • porosity

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