Interferences of Pb(II) and Cr(III) on Cu(II) biosorption by algae gelidium, algal waste and composite material

• Tipo: Capítulo ou Parte de Livro
• Data: 2009

Autores

Vilar, CJP (Autor) Outra; Cidália Botelho (Autor) FEUP; Boaventura, RAR (Autor) Outra

Livro

Título: Industrial Waste: Environmental Impact, Disposal and Treatment

Páginas: 371-386

ISBN: 978-1-60692-720-5

Editora: Nova Science Publishers

Indexação

Scopus - 1 Citação

Outras Informações

ID Authenticus: P-00Q-9HJ

Abstract (EN): Biosorption of Cr(III), Cu(II) and Pb(II) from binary metal solutions onto Gelidium algae, algal waste and a composite material was investigated in batch systems, at pH 4 for Cu(II)/Cr(III) and pH 5.3 for Cu(II)/Pb(II). Three biosorbents have been tested, namely, algae Gelidium, algal waste from agar extraction industry and a composite material. The maximum uptake capacity followed the order: Pb > Cu > Cr. The interference of lead on copper uptake is stronger than on chromium. The experimental equilibrium data were well described by a discrete and a continuous equilibrium model. Three dimensional sorption surfaces were generated, describing the metal uptake as a function of the equilibrium concentration of both metals. From the discrete model, it has been possible to obtain the Langmuir affinity constant. The presence of co-cations decreases the apparent affinity of copper ions for the biosorbent binding sites.

Idioma: Inglês

Tipo (Avaliação Docente): Científica