Synthèse de ligands bi-dentâtes de type base de schiff et leurs complexes métalliques Synthesis of bidentate Schiff’s base ligands and their metallic complexities.

Abstract

Liquid wastes of industrial are considered especially the dyes, which is directly discharged into rivers and other environmental parts, is one of the most important factors contributing to water pollution around the world. Therefore, many environmental associations call for finding solutions to treat these pollutants, which directly affect human health and the quality of aquatic life. In this research work, the adsorption of Remazol Brilliant Blue R dye in an aqueous solution onto biocomposites from a type of bi-function Schiff bases were studied. These adsorbents were prepared using different loading of ZnO nanoparticles into the polymeric matrix of Chitosan. Four adsorption operation parameters were studied to optimize these adsorbents (adsorbent dose, solution pH, temperature, and contact time). Empirical data were analyzed using Langmuir, Freundlich, and Temkin isotherm models to evaluate the maximum adsorption capacities. The adsorbents also were characterized using scanning electron microscopy- energy-dispersive x-ray (SEM-EDX), Fourier-transform infrared (FTIR) spectroscopy. The remarkable output of this research can open a window for other possible significant applications such as treatment of real wastewater, removal of heavy metal ions, and reduction of chemical oxygen demand.