Investigating Factors Affecting the Removal of dyestuff from Wastewater Using Different Nanocomposites: A Review Study

In recent years, the textile industry has produced more than 50 % of the colored wastewater in the world. Clean water is essential in the lives of humans, aquatic organisms, and agricultural products. Due to their toxicity, dyestuff in water causes adverse quality, endangers their health, and causes environmental changes. There are different methods for wastewater treatment, which, based on the research, shows that today's surface absorption method is mainly used for wastewater treatment due to its cheapness, simplicity, and cost-effectiveness. In this article, the removal of dyestuff from wastewater was investigated using different nanocomposites, and the effect of adsorption with nanocomposites was investigated based on factors affecting adsorption, including contact time, initial concentration, the effect of temperature, and pH of the solution. Adsorbents significantly impact removing dyestuff and can perform wastewater treatment with good quality. This research used activated carbon nanocomposites, carbon nanotubes, silver nanoparticles, zinc ferrite, ZnO, TiO2</sub>, Fe3</sub>O4</sub> and zero-valent iron nanoparticles for wastewater decolorization. In this article, the results show that different nanocomposite adsorbents are promising. They are a promising future for the treatment of colored wastewater.