Comparative sorption kinetic studies of dye and aromatic compounds onto fly ash

Y. S. Ho*, G. McKay

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

379 Citations (Scopus)

Abstract

A pseudo-second order and a pseudo-first order mechanism for the sorption of Omega Chrome Red ME as well as o-cresol and p-nitrophenol onto fly ash have been compared. Intraparticle diffusion processes and chemical sorption processes for the sorption also have been studied. The batch data for the sorption of Omega Chrome Red ME, o-cresol and p-nitrophenol onto fly ash have been analysed to predict the rate constant of sorption based on the assumption of a pseudo-second order mechanism. The equilibrium capacity and initial sorption rate have also been determined to study the effect of initial solute concentration and temperature on the sorption process. An activation energy of sorption has also been evaluated using the pseudo-second order rate constants.

Original languageEnglish
Pages (from-to)1179-1204
Number of pages26
JournalJournal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
Volume34
Issue number5
DOIs
Publication statusPublished - 1999
Externally publishedYes

Keywords

  • Dye
  • Fly ash
  • Kinetics
  • Sorption
  • o-cresol
  • p-nitrophenol

Fingerprint

Dive into the research topics of 'Comparative sorption kinetic studies of dye and aromatic compounds onto fly ash'. Together they form a unique fingerprint.

Cite this