Removal of Pb^sup 2+^ Ions from Water by Poly(Acrylamide-co-Sodium Methacrylate) Hydrogels

The application of poly(acrylamide-co-sodium methacrylate) (AAm/SMA) hydrogel for the removal of Pb^sup 2+^ ions from aqueous solutions has been investigated using batch adsorption technique. The extent of adsorption was investigated as a function of pH, adsorbent dose, and temperature. The Fourier...

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Bibliographic Details
Published in:Water, air, and soil pollution air, and soil pollution, 2012-09, Vol.223 (7), p.4355
Main Authors: Kalagasidis Krusic, M, Milosavljevic, N, Debeljkovic, A, Üzüm, Ö B, Karada, E
Format: Article
Language:English
Subjects:
Acrylamide
Adsorbents
Adsorption
Aqueous solutions
Environmental monitoring
Experiments
Fourier transforms
Heavy metals
Hydrogels
Ions
Lead
Lead content
Light
Organic chemicals
Regression analysis
Sodium
Studies
Water
Water pollution
Water treatment
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Summary:The application of poly(acrylamide-co-sodium methacrylate) (AAm/SMA) hydrogel for the removal of Pb^sup 2+^ ions from aqueous solutions has been investigated using batch adsorption technique. The extent of adsorption was investigated as a function of pH, adsorbent dose, and temperature. The Fourier transform infrared (FTIR) spectra showed that -NH2 and -COOH groups are involved in Pb^sup 2+^ ion adsorption. The obtained results were analyzed by pseudo-first-order, pseudo-second-order, and intraparticle diffusion models using both linear and nonlinear methods. It was found that the Pb^sup 2+^ ion adsorption followed pseudo-first-order kinetics. Nonlinear regression analysis of six isotherms, Langmuir, Freundlich, Redlich-Peterson, Toth, Dubinin-Radushkevich, and Sips, have been applied to the sorption data, while the best interpretation was given by Redlich-Peterson. Based on the separation factor, R ^sub L^, the Pb^sup 2+^ ion adsorption is favorable, while the negative values of [increment]G indicates that the Pb^sup 2+^ ion adsorption on the investigated hydrogel is spontaneous.[PUBLICATION ABSTRACT]
ISSN:0049-6979
1573-2932
DOI:10.1007/s11270-012-1200-y