Removal of heavy metal ions from aqueous solutions by radiation‐induced chitosan/(acrylamidoglycolic acid‐co‐acrylic acid) magnetic nanopolymer

Abstract

An effective method was developed to isolate toxic heavy metal ions from the aqueous solution by the magnetic nanopolymers. The magnetic sorbent was prepared with radiation-induced crosslinking polymerization of chitosan (CS), 2-acrylamido-glycolic acid (AMGA), and acrylic acid (AAc), which stabilized by magnetite (Fe 3 O 4 ) as nanoparticles. The formation of magnetic nanoparticles (MNPs) into the hydrogel networks was confirmed by Fourier transform infrared spectroscopy, X-ray diffraction, transmission electron microscopy, and Scanning electron microscopy, which revealed the formation of MNPs throughout the hydrogel networks. The swelling behavior of the hydrogels and magnetic ones was evaluated at different pH values. The adsorption activity for heavy metals such as Cu 21 and Co 21 by nonmagnetic and magnetic hydrogels, Fe 3 O 4 /CS/ (AMGA-co-AAc), in terms of adsorption amount was studied. It was revealed that hydrogel networks with magnetic properties can effectively be used in the removal of heavy metal ions pollutants and provide advantageous over conventional ones.

Review on nanoadsorbents: a solution for heavy metal removal from wastewater

“…Radiation‐induced chitosan/(acrylamidoglycolic acid‐ co ‐acrylic acid) magnetic nanopolymer was fabricated and tested for the removal of heavy metals, especially copper, from waste water. The hydrogel network containing the MNPs helps enhance the process of adsorption and gets easily separated due to their magnetic properties [53].…”

Employment and performance of modified chitosan for the removal of copper ions and methylene blue in wastewater

“…The symmetric stretching of the COC was related to the absorption bands at 1152 and 1075 cm −1 , which supported the skeletal vibration of the CO stretching, respectively. [ 39,40 ] In polymer S1 , the characteristic peaks of polyacrylic acid (PAA) corresponding to CO stretching and CH deformation were appeared at 1711 and 815 cm −1 , respectively. In polymer S2 , the mean characteristic peaks of poly‐2‐acrylamido‐2‐methylpropanesulfonic acid (PAMS) wear obtained at 1165 and 600 cm −1 which related to SO 3 H group vibration.…”

Radiation synthesis of Poly(N-vinylpyrrolidone/acrylic acid/pectin/silver) nanocomposite hydrogel and its antimicrobial activity

“…The presence of soluble fractions increases with increasing content of the PEC due to the fact that some of the formed polymeric chains containing PEC do not incorporate into the Poly(NVP/AAc) polymer network owing to its less mobility and the higher porous structure formed by increasing PEC content. Therefore, more soluble fraction easily extracted [29, 30]. Another important factor is the fact that a higher concentration of PEC causes an increase in the viscosity of the reaction mixture, resulting in a difficult mixing.…”