Imidazole and Polyester Modified Balangu/Fe۳O۴/Kaolinite Bio-Nanocomposites: Synthesis, Characterization, and their Application for Pb۲+ Removal: Optimization by Response Surface Methodology

Magnetic nanoparticles, aluminosilicates, and natural polysaccharides have recently attracted a huge deal of attention due to their unique properties and extensive applications. Balangu is a natural polysaccharide with high swelling and environmental compatibility, which can be coordinated with the metal cations due to its hydroxyl functional groups. In this research, three new nanocomposites with improved coordination ability were synthesized for the first time. The first nanocomposite included iron oxide, Balangu gel, and kaolinite. In the second nanocomposite, an imidazole derivative was loaded the first nanocomposite. Finally, a type of polyester was produced in Balangu/Fe۳O۴/kaolinite matrix at room temperature. Structures of these nanocomposites were assessed by TGA, SEM, FTIR, and XRD techniques. The ability of nanocomposites to eliminate Pb+۲ from aqueous solution was also investigated. The RSM method was utilized to optimize the experimental conditions. The maximum adsorption capacity of Pb (II) for Balangu/Fe۳O۴/kaolinite, Balangu/Fe۳O۴/kaolinite/Imidazol, and Balangu/ Fe۳O۴/ kaolinite/ polyester were ۲۹.۴۸, ۳۷.۸۷, and ۴۳.۹۵ mg/g respectively.

کلیدواژه ها:

Balangu ، Kaolinite ، Imidazole ، polyester ، RSM