Solution to the homogeneous surface diffusion model for batch adsorption systems using orthogonal collocation

G. McKay*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

69 Citations (Scopus)

Abstract

A solution to the homogeneous surface diffusion model has been developed and incorporated into a batch adsorption model based on external boundary layer mass transport and homogeneous diffusion. The model has been extensively tested using three experimental adsorption systems, namely, phenol on carbon, basic yellow dye on carbon and basic blue dye on silica. The effect of initial solute concentration and adsorbent mass has been studied in 23 batch experiments, which have been modelled using the collocation solution method to solve the homogeneous surface diffusion equation. The theoretical concentration decay curves show a high degree of correlation with experimental data.

Original languageEnglish
Pages (from-to)213-221
Number of pages9
JournalChemical Engineering Journal
Volume81
Issue number1-3
DOIs
Publication statusPublished - 1 Jan 2001
Externally publishedYes

Keywords

  • Activated carbon
  • Adsorption
  • Collocation
  • Dyes
  • Phenol
  • Silica
  • Surface diffusion model

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