The biosorption mechanisms of different heavy metallic cations (Cd, Ni, Pb) to active chemical groups on the cell wall matrix of the nonliving brown marine macroalga, Sargassum vulgaris in its natural form, were examined by the following instrumental and chemical techniques: Fourier-transform infrared (FTIR) analysis, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), a...

With rapid industrial development, problems related to pollution are becoming severe Water pollution is one of the most serious problems because inorganic and organic wastes are discharged to the aquatic environment either in water soluble or insoluble forms. Heavy metal ions have lethal effects on all forms of life and these enter the food chain through the disposal of wastes in water channels...

In this study Ceramium virgatum has been characterized and used for the removal of cadmium and lead from aqueous solutions. The effect of pH, adsorbent dosage, contact time and temperature on adsorption process was studied in batch experiments. Langmuir and Freundlich models were applied to describe the biosorption isotherm of the metal ions by C. virgatum biomass. The adsorption data can be we...

Heavy metals are major contributors to pollution of the biosphere, and their efficient removal from contaminated water is required. Biosorption is an emerging technology that has been shown to be effective in removing very low levels of heavy metal from wastewater. Although peptides such as metallothioneins or phytotchelatins are known to immobilize heavy metals, peptide-based biosorbents have ...

Macrophytes play an important role in assessing the condition of aquatic ecosystems. The aim study was to assess effectiveness cadmium uptake by frogbit (Hydrocharis morsus-ranae) for phytoremediation examined (Cd) grown under conditions low and high fertilizer dose three levels over three- six-week exposure times. Cadmium found be influenced water reactivity, mineral nutrient abundance, time. ...

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...