Abstract: “Human activities introduce heavy metals to the hydrosphere in many ways such as burning of fossil fuels, smelting of ores, municipal sewage, industrial effluent, mining activities, landfill, mineral weathering, underground toxic waste disposal, etc.. These contaminants, regardless of their sources, are easily dispersed into the aquatic system, and tend to accumulate in living organisms, resulting in various disorders and diseases in the ecosystem. Over the last decades, biosorption has gained importance in the field of water and wastewater treatment. Many studies have demonstrated that biosorption, a part of being a low cost technique, is simple, environmentally friendly and shows a good performance for the separation and removal of organic and inorganic pollutants. Since, it is unusual to find stream of wastewater contaminated by only a sole pollutant, the intensity of interaction which depends on concentration of each component of a multi-component system should be considered. Beside”

Keywords: Fe2O3 nanoparticles, multi-component biosorption, heavy metal, modelling