Use of the microalga Scenedesmus obliquus to remove cadmium cations from aqueous solutions

• Tipo: Artigo em Revista Científica Internacional
• Data: 2009

Autores

Monteiro, CM (Autor) Outra; Castro, PML (Autor) Outra; F. Xavier Malcata (Autor) Outra

Revista

Título: World Journal of Microbiology and Biotechnology

Vol. 25

Páginas: 1573-1578

ISSN: 0959-3993

Editora: Springer Nature

Indexação

ISI Web of Knowledge - 36 Citações

Scopus - 54 Citações

Outras Informações

ID Authenticus: P-003-GKQ

DOI: 10.1007/s11274-009-0046-y

Abstract (EN): The ability of a wild strain of Scenedesmus obliquus, isolated from a heavy metal-contaminated environment, to remove Cd(2+) from aqueous solutions was studied at several initial concentrations. Viable biomass removed metal to a maximum extent of 11.4 mg(Cd)/g at 1 mg(Cd)/l, with most Cd(2+) being adsorbed onto the cell surface. A commercially available strain (ACOI 598) of the same microalga species was also exposed to the same Cd concentrations, and similar results were obtained for the maximum extent of metal removal. Heat-inactivated cells removed a maximum of 6.04 mg(Cd)/g at 0.5 mg(Cd)/l. The highest extent of metal removal, analyzed at various pH values, was 0.09 mg(Cd)/g at pH 7.0. Both strains of the microalga tested have proven effective in removing a toxic heavy metal from aqueous solutions, hence supporting their choice for bioremediation strategies of industrial effluents.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6