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Biosorption of Cadmium from Aqueous Solutions Using Blue Green Algae
The kinetics and optimum conditions for the adsorption of Cd(II) ions on to dead blue green algae (BGA) mixed species were investigated with a view to explore the possibility of utilising it as a low cost adsorbent for the removal of Cd(II) from aqueous medium. Biosorption of Cd(II) was studied by varying different experimental conditions viz; contact time, solution pH, bio-sorbent dosage and Cd(II) concentration. Cd(II) adsorption onto BGA was observed to be depend on solution contact time, pH, bio-sorbent dosage and concentrations of Cd(II) in solution. The biosorption process followed pseudo-first order model (R2>0.99). Reuses of the biosorbent were also studied.
Keywords
Biosorption, Blue Green Algae, Cadmium(II).
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