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Orientador(es)
Resumo(s)
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.
Descrição
Palavras-chave
Fontinalis antipyretica First-order model kinetics lead
Contexto Educativo
Citação
Martins, Ramiro; Freitas, Olga; Vilar, Vitor; Boaventura, Rui (2012). Accumulation and release of Pb(II) in aqueous solution by aquatic mosses (Fontinalis antipyretica). International Journal og Environment and Waste Management. ISSN 1478-9876. 3:4, p. 270-283