Kinetic studies of the liquid-phase adsorption of a reactive dye onto activated lignite
- Democritus University of Thrace, Xanthi (Greece)
The kinetics of batch adsorption of a commercial reactive dye onto activated lignite has been investigated at temperatures of 26, 40, and 55{sup o}C, using aqueous solutions with initial dye concentrations in the range of 15-60 mg/L. An empirical single parameter relationship of the adsorbent loading versus the square root of contact time was proposed, which was determined to provide a very good description of the batch adsorption transients up to equilibrium. The data were also examined by means of the Elovich equation. The effect of the temperature and the initial dye concentration on the adsorption kinetics was analyzed, and the results were discussed by considering that intraparticle diffusion is the dominant mechanism.
- OSTI ID:
- 20885707
- Journal Information:
- Industrial and Engineering Chemistry Research, Vol. 46, Issue 4; ISSN 0888-5885
- Country of Publication:
- United States
- Language:
- English
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