Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.14/3297
Título: Cadmium removal by two strains of desmodesmus pleiomorphus cells
Autor: Monteiro, Cristina M.
Castro, Paula M. L
Malcata, F. Xavier
Palavras-chave: Microalgae
Heavy metals
Biosorption
pH
Inactive biomass
Data: 2010
Editora: Springer Verlag
Citação: MONTEIRO, Cristina M. ; CASTRO, Paula M. L. ; MALCATA, F. Xavier - Cadmium removal by two strains of desmodesmus. Water Air Soil Pollution . ISSN 1573-2932. Vol. 208, n.º 1-4 (2010), p. 17–27
Resumo: The capacity of microalgae to accumulate heavy metals has been widely investigated for its potential applications in wastewater (bio)treatment. In this study, the ability of Desmodesmus pleiomorphus (strain L), a wild strain isolated from a polluted environment, to remove Cd from aqueous solutions was studied, by exposing its biomass to several Cd concentrations. Removal from solution reached a maximum of 61.2 mg Cd g−1 biomass by 1 day, at the highest initial supernatant concentration used (i.e., 5.0 mg Cd L−1), with most metal being adsorbed onto the cell surface. Metal removal by D. pleiomorphus (strain ACOI 561), a commercially available ecotype, was also assessed for comparative purposes; a removal of 76.4 mg Cd g−1 biomass was attained by 1 day for the same initial metal concentration. Assays for metal removal using thermally inactivated cells were also performed; the maximum removal extent observed was 47.1 mg Cd g−1 biomass, at the initial concentration of 5 mg Cd L−1. In experiments conducted at various pH values, the highest removal was achieved at pH 4.0. Both microalga strains proved their feasibility as biotechnological tools to remove Cd from aqueous solution.
URI: http://hdl.handle.net/10400.14/3297
Versão do Editor: The original publication is available at http://www.springerlink.com/content/p04p7w026170510v/
Aparece nas colecções:CBQF - Artigos em revistas internacionais com Arbitragem / Papers in international journals with Peer-review

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