Abstract
Alginate extracted from Sargassum filipendula was evaluated for Cu 2+ and Pb 2+ sorption in the form of calcium cross-linked beads. The obtained maximum adsorption capacities were 0.79 and 1.26 mmol g -1 , for Cu 2+ and Pb 2+ , respectively. FTIR spectroscopy technique confirms that extraction was efficient. For Sargassum filipendula algae, the carboxylic, alcoholic, sulfonate and amino groups were observed. For alginate extracte, only the carboxylic and alcoholic groups were observed.
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