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Biosorption of Cr3+
from aqueous solution by a NaOH-treated bacterial dead Streptomyces
rimosus biomass
The chromium biosorption capacity of a Streptomyces rimosus biomass treated
with NaOH (0.1M) was studied in the batch mode. After pre-treatment of
biomass at the ambient temperature, optimum conditions of biosorption were
found to be: a biomass particle size between 50 and 112µm, an average
saturation contact time of 1h, a biomass concentration of 3g/l and a
stirring speed of 250rpm .The equilibrium data could be fitted by Freundlich
isotherm equation. Under these optimal conditions, 110mg Cr3+/g
biomass were fixed. |
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