Paper Title:

Adsorption of Dyes and Metal Ions by Acrylamide - Co - Acrylic Acid Hydrogels Synthesized by Gamma Radiation

Periodical Materials Science Forum (Volume 609)
Main Theme Thin Films and Porous Materials
Edited by N.Gabouze
Pages 255-259
DOI 10.4028/www.scientific.net/MSF.609.255
Citation L. Aberkane-Mechebbek et al., 2009, Materials Science Forum, 609, 255
Online since January 2009
Authors L. Aberkane-Mechebbek, S.F. Larbi-Youcef, M. Mahlous
Keywords Adsorption, Dye, Gamma Radiation, Hydrogel, Swelling
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Hydrogel based on acrylamide and acrylic acid was synthesized and crosslinked by gamma radiation at an absorbed dose of 8 kGy. Swelling properties of the hydrogel in water and in methyl violet and Congo red solutions were investigated. The results showed that the swelling rate of the hydrogel depends on the pH and the ionic nature of the dye. Diffusion of water and dyes solutions within the hydrogel was found to be of non-Fickian character. Contrary to the swelling behavior, the capacity of the hydrogel to adsorb dyes seems to be higher at weak pHs. Concerning metal ions uptake, the results showed that adsorption of Cu2+ increases with pH increasing from pH1 to pH4.