Abstract
The application of fixed bed adsorption is an important separation technique used for heavy metals in environmental pollution control. To design a fixed bed column, it is necessary to find dynamics data in the breakthrough curve form. The objective of this study was to model the biosorption process of nickel by using biomass of Sargassum filipendula in a fixed bed column. Experimental data were generated at 30°C, pH 3, flow rate of 6 ml/min and feed concentrations of 1, 1.5, 2, 3, 5 and 6 mequiv/l. Langmuir isotherm was used to represent the equilibrium data in the column (q max = 2.496 mequiv/g, b = 0.456 l/mequiv) and in a batch operation of the system (q max = 1.577 mequiv/g, b = 0.269 l/mequiv). These Langmuir parameters were used to simulate the continuous adsorption process of nickel. The partial differential equations model has taken into consideration the mass transfer resistance in the biosorbent as the key controlling phenomenon, which adequately represented the dynamic biosorption process of nickel.
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The authors thank the National Council for Scientific and Technological Development of Brazil for financial support of this work.
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Veit, M.T., da Silva, E.A., Tavares, C.R.G. et al. Biosorption of nickel(II) ions by using chemically pre-treated Sargassum filipendula biomass in a fixed bed column. World J Microbiol Biotechnol 25, 1849–1856 (2009). https://doi.org/10.1007/s11274-009-0087-2
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DOI: https://doi.org/10.1007/s11274-009-0087-2