Biosorption of lead by the brown seaweed Sargassum filipendula - batch and continuous pilot studies

Biosorption of lead by the brown seaweed Sargassum filipendula - batch and continuous pilot studies

The biosorption of lead by the brown alga Sargassum filipendula was studied. pH 4.0 was the optimum value for the biosorption of lead. Isotherms indicated that for solutions containing 0.03 ± 0.001 up to 3.27 ± 0.04 mmol/L of lead, 2.0g/L was the optimum biomass concentration. The Langmuir model was...

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Bibliographic Details
Published in:Electronic Journal of Biotechnology Vol. 10; no. 3; pp. 368 - 375
Main Authors: Mesquita Vieira, Denise, Augusto da Costa, Antonio Carlos, Assumpção Henriques, Cristiane, Luiz Cardoso, Vicelma, Pessôa de França, Francisca
Format: Journal Article
Language:Portuguese
Published: Pontificia Universidad Católica de Valparaíso 01-07-2007
Subjects:
BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Sargassum filipendula
biosorption, biosorption equilibrium
continuous system
lead
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Summary:The biosorption of lead by the brown alga Sargassum filipendula was studied. pH 4.0 was the optimum value for the biosorption of lead. Isotherms indicated that for solutions containing 0.03 ± 0.001 up to 3.27 ± 0.04 mmol/L of lead, 2.0g/L was the optimum biomass concentration. The Langmuir model was fitted to represent the experimental data, and the kinetics of biosorption presented equilibrium in 30 min. The continuous system operated for 56 hrs presenting a 100% binding of ionic lead, which corresponds to an accumulation of 168 g lead, equivalent to a load of 1.7 mmol ionic lead/g Sargassum filipendula. The results that were obtained in a continuous system showed a gradual saturation of the biomass in the reactors
ISSN:0717-3458
0717-3458
DOI:10.4067/S0717-34582007000300004