A Comparison of chemisorption kinetic models applied to pollutant removal on various sorbents

Y. S. Ho, G. McKay*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2353 Citations (Scopus)

Abstract

A comparison of kinetic models describing the sorption of pollutants has been reviewed. The rate models evaluated include the Elovich equation, the pseudo-first order equation and the pseudo-second order equation. Results show that chemisorption processes could be rate limiting in the sorption step. The pseudo-second order equation may be applied for chemisorption processes with a high degree of correlation in several literature cases where a pseudo-first order rate mechanism has been arbitrarily assumed.

Original languageEnglish
Pages (from-to)332-340
Number of pages9
JournalProcess Safety and Environmental Protection
Volume76
Issue number4
DOIs
Publication statusPublished - Nov 1998
Externally publishedYes

Keywords

  • Elovich equation
  • Kinetics
  • Pseudo-first order and pseudo-second order
  • Sorption

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