Abstract: “With the common use of dyes and pigments in textile, tannery, food, paper and pulp, printing, carpet and mineral processing industries, they became as serious polluters of our environment as far as color pollution is concerned. Due to discharge of these effluents into natural streams, the sunlight penetration into the stream is inhibited and photosynthetic activity is reduced which directly affects the biotic life. By considering the carcinogenic and mutagenic nature of dyes, the removal of these pollutants from aquatic environments become as a serious concern. However treating of dye bearing wastewaters by conventional treatment methods is a complex problem. The most commonly used method for color removal is biological oxidation and chemical precipitation. However, these processes are effective and economic only in the case where the solute concentration is relatively high. Currently sorption process is proved to be an effective alternate for the treatment of dye wastewaters. Activate”

Keywords: nanoparticles, multi-component biosorption, background ions, dye