Removal of Cr (III) by using Chitosan-Grafting-Poly(Acryl Acid-Crotonic Acid) Characterization and Kinetic Study

Abstract

Hydrogel nanocomposites were prepared using free radical polymerization chitosan and acrylic acid (AA) in combination with crotonic acid. KPS was employed as the initiating agent, while MBA functioned as the cross-linking agent. The nanocomposite of Ch-g-P(AA-co-CA) is a powerful pollutant absorber. Cr (III) was removed from the water using the combination. Field emission scanning electron microscopy (FESEM) and infrared spectroscopy (FTIR) were used to examine the nanocomposites’ structure and morphology. The kinetics of Cr (III) adsorption was studied using these rates. Pseudo-second order kinetics characterize the adsorption process. Hydrogel nanocomposite efficiently removes Cr by adsorption (III).