Journal
BIOCHEMICAL ENGINEERING JOURNAL
Volume 27, Issue 3, Pages 310-314Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.bej.2005.08.007
Keywords
biosorption; equilibrium; kinetic; lead; Sargassum sp.
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Dead Sargassum sp. as a biosorbent for Pb2+ ions from aqueous solutions was studied. Kinetics and equilibrium of Pb2+ biosorption were evaluated. The biosorption process used in this work followed a second-order kinetics and was not influenced by temperature, at least within 298-328 K. The equilibrium of biosorption was well described by Langmuir isotherm and the maximum Pb2+ uptake capacity (1.26 mmol g(-1)) is higher than those reported in the literature, for different sorbents. More than 95% of sorbed Pb2+ cations could be removed by desorption with a 0.10 mol l(-1) Na(2)EDTA solution at 298 K. (c) 2005 Published by Elsevier B.V.
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