The Adsorption of basic dye onto silica from aqueous solution-solid diffusion model

Gordon Mckay*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

139 Citations (Scopus)

Abstract

The adsorption of Basic Blue 69 dye onto silica in a batch adsorption system has been studied. A two resistance mass transfer model has been developed based on film resistance and homogeneous solid phase diffusion. An analytical solution is presented and experimental results and theoretical data are in good agreement, for a wide range of operating conditions, using a single external mass transfer coefficient and a single effective solid diffusivity. The variables investigated are: initial dye concentration, solid/liquid ratios and adsorbent particle size range. Under constant agitation conditions almost all data can be correlated using a film mass transfer coefficient of 2.0 x 10-4 cm sec-1 and a diffusion coefficient of 1.2 x 10-9 cm2 sec-1.

Original languageEnglish
Pages (from-to)129-138
Number of pages10
JournalChemical Engineering Science
Volume39
Issue number1
DOIs
Publication statusPublished - 1984
Externally publishedYes

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