Abstract Heavy metals cause outrageous ecological risks when released into the environment from many point and non-point sources. Biosorbents prepared leaves of Eupatorium adenophorum ( AEA ) Acer oblongum AAO were used as practical solutions to remove toxic heavy metal cadmium (Cd 2+ wastewater. Biosorption Cd was investigated using biomass under batch conditions. The effect operating variable...

Biosorption of cadmium ions from simulated wastewater using rice husk was studied with initial concentration 25 mg/l. Equilibrium isotherm Langmuir, Freundlich, BET and Timken models. The results show that the Freundlich is best fit model to describe this process high determination coefficient equals 0.983. There a good compliance between experimental theoretical results. Highest removal effici...

Proton, Cd, Pb, Sr, and Zn adsorption onto the fungal species Saccharomyces cerevisiae were measured in bulk adsorption experiments as a function of time, pH, surface: metal ratio, and ionic strength, and we measured the electrophoretic mobility of the cells as a function of pH. We modeled the acid/base properties of the fungal cell wall by invoking a nonelectrostatic surface complexation model...

Lead biosorption by Klebsiella sp. 3S1 isolated from a wastewater treatment plant was investigated through a Rotatable Central Composite Experimental Design. The optimisation study indicated the following optimal values of operating variables: 0.4 g/L of biosorbent dosage, pH 5, and 34°C. According to the results of the kinetic studies, the biosorption process can be described by a two-step pro...

Biosorption of uranium metal ions by a nonliving protonated Sargassum fluitans seaweed biomass was used to remove the heavy metal uranium from the aqueous solution. Uranium biosorption isotherms were established for solution pH values ranging from pH 2.5-4.0. Uranium biosorption uptake was accompanied by the release of protons from the biomass. The sorption isotherms were highly pH dependent, a...

The potential to remove Cr(VI) from aqueous solutions through biosorption using dried Sargassum thunbergii Kuntze was investigated with respect to initial pH, amount of biosorbent, initial Cr(VI) concentrations and temperature. Cr(VI) removal efficiency was influenced significantly by the variation of pH, and the optimum pH was about 2.0. Moreover, the biosorption kinetics followed the pseudo-s...