Equilibrium of Cu(II) and Ni(II) biosorption by marine alga Sargassum filipendula in a dynamic system: Competitiveness and selectivity

The study focuses on the equilibrium of dynamic biosorption in single and binary systems containing Cu(II) and Ni(II) ions using Sargassum filipendula (a marine alga). The experiments were performed in fixed-bed columns with both single-component and bi-component metal solutions (using different mol...

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Bibliographic Details
Published in:Bioresource technology 2011-04, Vol.102 (7), p.4610-4617
Main Authors: Kleinübing, S.J, da Silva, E.A, da Silva, M.G.C, Guibal, E
Format: Article
Language:English
Subjects:
Absorption
Binary systems
Biological and medical sciences
Biotechnology
Chemical Sciences
Copper - pharmacokinetics
Displacement
Dynamic tests
Dynamical systems
Dynamics
Environmental Restoration and Remediation - methods
Fundamental and applied biological sciences. Psychology
Marine
Mathematical analysis
Mathematical models
Models, Chemical
Nickel - pharmacokinetics
Sargassum - metabolism
Sargassum filipendula
Sorption
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Summary:The study focuses on the equilibrium of dynamic biosorption in single and binary systems containing Cu(II) and Ni(II) ions using Sargassum filipendula (a marine alga). The experiments were performed in fixed-bed columns with both single-component and bi-component metal solutions (using different molar concentrations). Experimental data were fitted with different equilibrium models such as Langmuir, Langmuir with inhibition, Jain and Snowyink and Langmuir-Freundlich equations. The biosorption of pure metal ions in solution presented adequate capacities both for Cu(II) and Ni(II). In binary solutions the preferential sorption of Cu(II) over Ni(II) was demonstrated by the displacement of Ni(II) (marked overshoot on the breakthrough curves).
ISSN:0960-8524
1873-2976
DOI:10.1016/j.biortech.2010.12.049