Characterization and Metal Sorption of PolyAcrylamide /Chitosan Nanocomposite Hydrogel Synsisyezed by Gamma Irradiation | ||||
| Egyptian Journal of Chemistry | ||||
| Volume 67, Issue 3, March 2024, Page 107-115 PDF (412.92 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejchem.2023.219201.8247 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
salwa abdel-sadek khalil  1; mervat rabie khafaga2; abdel-wahab khalil El-naggar2
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| 1national center for radiation research and technology, Egyptian atomic energy authority. | ||||
| 2atomic energy authority | ||||
| Abstract | ||||
| Abstract Gamma irradiation was used to prepare nanocomposite hydrogels composed of polyacrylamide (PAM) and chitosan nanoparticles (CS-NPs). The hydrogels were investigated by FT-IR spectroscopic analysis, thermogravimetric analysis (TGA) and the measurements of swelling in water. The metal sorption and kinetics for Cu+2, Pb+2 and Fe+3 metal ions was investigated. The results of TGA analysis showed that the PAM/CS-NPs hydrogels had lower thermal stability than PAM hydrogel. It was found that PAM and PAM/CS-NPs hydrogels reached the equilibrium swelling in water at 4 hours. However, PAM/CS-NPs hydrogels displayed higher swelling in water than PAM hydrogel. The metal sorption study showed that PAM/CS hydrogels shad high affinity and selectivity for the metal ions according to the order: of Cu+2 > Pb+2 > Fe+3. On the other hand, the sorption by the hydrogel networks is controlled by applying Fick's law. | ||||
| Keywords | ||||
| Nanocomposites; Gamma radiation; Metal sorption; Selectivity | ||||
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