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Solid diffusion control of the adsorption of basic dyes onto granular activated carbon and natural zeolite in fixed bed columns

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Author(s): L. MARKOVSKA | V. MESHKO | V. NOVESKI | M. MARINKOVSKI

Journal: Journal of the Serbian Chemical Society
ISSN 0352-5139

Volume: 66;
Issue: 7;
Start page: 463;
Date: 2001;
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Keywords: solid diffusion control | dye adsorption | granular activated carbon | natural zeolite | adsorption modelling

ABSTRACT
The adsorption of basic dyes from aqueous solutions onto granular activated carbon and natural zeolite was studied using a fixed bed column. The design procedures for fixed bed adsorption columns were investigated for two basic dyes Maxilon Goldgelb GL EC 400 % (MG-400) and Maxilon Schwarz FBL-01 300 % (MS-300). A computer program based on the solid diffusion control model has been developed. The model parameters: solid diffusion coefficient, DS, axial dispersion coefficient, DL and external mass transfer coefficient, kf for all the investigated systems were estimated by means of a best fit approach.
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