The removal of colour from effluent using various adsorbents-III. Silica: Rate processes

G. McKay*, M. S. Otterburn, A. G. Sweeney

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

539 Citations (Scopus)

Abstract

The rate of adsorption of Astrazone Blue, a basic dye, on Sorbsil Silica has been studied. The parameters studied include particle size, initial dye concentration, agitation and dye solution temperature. The rate controlling step is mainly intraparticle diffusion, although a small boundary layer resistance is experienced. The activation energy for the adsorption of Astrazone Blue on silica is 13.2 ± 0.6 kJ kg-1. The diffusion coefficients vary from 9 × 10-9 cm2 s-1 at 20°C to 10 × 10-8 cm2 s-1 at 82°C.

Original languageEnglish
Pages (from-to)15-20
Number of pages6
JournalWater Research
Volume14
Issue number1
DOIs
Publication statusPublished - 1980
Externally publishedYes

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