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Author(s): Ramiro J. E. Martins
Olga M. M. Freitas
Vítor J. P. Vilar
Rui A. R. Boaventura
Title: Accumulation and release of Pb(II) in aqueous solution by aquatic mosses (Fontinalis antipyretica)
Issue Date: 2012
Abstract: The uptake and release of Pb(II) by Fontinalis antipyretica was studied in laboratory, by exposing the plants to different lead concentrations for 144 h and 335 h contamination and decontamination periods, respectively. A first order kinetic model was fitted to the experimental data to determine the uptake and release constants, k1 and k2, and other relevant parameters. The metal accumulation capacity, at equilibrium, follows the order: Pb(II) > Zn(II) > Cd(II) > Cr(VI). A Bioconcentration Factor (BCF) and a Biological Elimination Factor (BEF) were also determined; for 0.9-2.2 mg Pb l -1, BCF decreases from about 30748 to 21296. Copyright (c) 2012 Inderscience Enterprises Ltd.
Subject: Ciências Tecnológicas, Engenharia química
Technological sciences, Chemical engineering
Scientific areas: Ciências da engenharia e tecnologias::Engenharia química
Engineering and technology::Chemical engineering
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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