Planejamento experimental estatístico para a otimização das condições em batelada de dessorção de níquel da alga marinha Sargassum filipendula
Carregando...
Data
2009
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
In order to conduct
a study on the effect of important design parameters in nickel desorption from the
macroalgae Sargassum filipendula, four agents were tested in sets of full 4.23 factorial designs
(eluant agent, nickel load, initial acid concentration and solid:liquid ratio). Two responses
were analyzed: the amount desorbed for the agents and the weight loss during the
desorption process. The results showed that all factors were significant in both responses.
Additionally, several interactions among the factors were also significant. Analyzing the
contribution of each factor, it was verified that the best operational conditions were
obtained for eluents H2SO4/MgSO4, at the highest tested concentration, highest nickel load
and lowest solid:liquid ratio. In this configuration, the results obtained with the desorption
(%) was greater than 95%, making the biosorption process very interesting in the treatment
of nickel solutions. Once regenerated, the Sargassum filipendula biomass can be used in
subsequent biosorption cycles, lowering biomass costs and facilitating the treatment process
that does not require successive biomass changes.
Descrição
Palavras-chave
Planejamento de experimentos, Dessorção de níquel, Remoção de níquel, Experiment design, Nickel desorption, Nickel removal
Citação
SEOLATTO, Araceli Aparecida et al. Planejamento experimental estatístico para a otimização das condições em batelada de dessorção de níquel da alga marinha Sargassum filipendula. Acta Scientiarum. Technology, Maringá, v. 31, n. 2, p. 207-214, 2009.