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Non-living Rhizopus nigricans obtained as a waste byproduct from the pharmaceutical fermentation industry has been used for adsorption of lead over a range of metal ion concentrations, adsorption time, pH and co-ions. The process of uptake obeys both the Langmuir and Freundlich isotherms. The mechanism of lead sequestering by this type of biomass was also studied by using experimental techniques such...
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