Mechanism of adsorption of dyes and phenols from water using activated carbons prepared from plum kernels

Ruey Shin Juang*, Feng Chin Wu, Ru Ling Tseng

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

208 Scopus citations

Abstract

The kinetics and mechanism of adsorption of two commercial dyes (BR22, AB25), phenol, and 3-chlorophenol from water on activated carbons were studied at 30°C. The activated carbons were prepared from plum kernels, and the activation temperature and time tested were in the ranges 750-900°C and 1-4 h, respectively. Three simplified kinetic models including a pseudo- first-order, a pseudo-second-order, and an intraparticle diffusion model were tested. It was shown that the adsorption of both phenols could be fitted to a pseudo-second-order rate law, and that of both dyes could be fitted to an intraparticle diffusion model. Kinetic parameters were calculated and correlated with the physical properties of the adsorbents. (C) 2000 Academic Press.

Original languageEnglish
Pages (from-to)437-444
Number of pages8
JournalJournal of Colloid and Interface Science
Volume227
Issue number2
DOIs
StatePublished - 15 07 2000
Externally publishedYes

Keywords

  • Activated carbons
  • Adsorption mechanism
  • Dyes
  • Phenols
  • Plum kernels

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