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Sorption and desorption of Pb2+ ions by dead Sargassum sp. biomass

Paper ID Volume ID Publish Year Pages File Format Full-Text
5090 283 2006 5 PDF Available
Title
Sorption and desorption of Pb2+ ions by dead Sargassum sp. biomass
Abstract

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 Na2EDTA solution at 298 K.

Keywords
Biosorption; Equilibrium; Kinetic; Lead; Sargassum sp.
First Page Preview
Sorption and desorption of Pb2+ ions by dead Sargassum sp. biomass
Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 27, Issue 3, January 2006, Pages 310–314
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering