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Characterization of metal adsorption kinetic properties in batch and fixed-bed reactors



Characterization of metal adsorption kinetic properties in batch and fixed-bed reactors



Chemosphere 54(3): 397-404



Copper adsorption kinetic properties in batch and fixed-bed reactors were studied in this paper. The isothermal adsorption experiments showed that the copper adsorption capacity of a granular activated carbon (Filtrasorb 200) increased when ionic strength was higher. The presence of EDTA diminished the adsorption. An intraparticle diffusion model and a fixed-bed model were successfully used to describe the batch kinetic and fixed-bed operation behaviors. The kinetics became faster when the solution pH was not controlled, implying that the surface precipitation caused some metal uptake. The external mass transfer coefficient, the diffusivity and the dispersion coefficient were obtained from the modeling. It was found that both external mass transfer and dispersion coefficients increased when the flow rate was higher. Finally effects of kinetic parameters on simulation of fixed-bed operation were conducted.

Accession: 004070713

Download citation: RISBibTeXText

PMID: 14575752

DOI: 10.1016/S0045-6535(03)00714-8

Download PDF Full Text: Characterization of metal adsorption kinetic properties in batch and fixed-bed reactors



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