Biosorption of Ag(I)-Spirulina platensis for different pH
Abstract
Biosorption of Ag(I)-Spirulina platensis for different pH were investigated using dialysis and Atomic-absorbtion analysis. It was shown, that the biosorption constant for Ag(I) Spirulina platensis complex and the capacity depend on the change of pH. In particular, with the increase of pH (pH=5.5. and pH=8.6 cases), the biosorption constant increase and the capacity decreases. The nature of interaction is also changed. In case of neutral pH, the interaction Ag(I)-S. platensis is of cooperative character and maximum metal biosorption by S. platensis biomass was observed at pH 7.0.
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