Strontium(II) ion uptake on poly(N-vinyl imidazole)-based hydrogels

In this article, we report on the extraction of Sr(II) ions from aqueous solution with a series of poly(N‐vinyl imidazole)‐based hydrogels. The hydrogels were synthesized by the crosslinking of N‐vinyl imidazole with four different crosslinkers with γ rays as initiators. The well‐characterized hydro...

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Bibliographic Details
Published in:Journal of applied polymer science 2012-06, Vol.124 (5), p.3721-3727
Main Authors: Garg, Godawari, Chauhan, Ghanshyam S., Ahn, J.-H.
Format: Article
Language:English
Subjects:
Adsorption
Applied sciences
Colorimetry
Crosslinking
Exact sciences and technology
Hydrogels
Isotherms
Materials science
Mathematical analysis
Organic polymers
Physicochemistry of polymers
Polymers
Properties and characterization
Scanning electron microscopy
Solution and gel properties
structure-property relations
Uptakes
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Summary:In this article, we report on the extraction of Sr(II) ions from aqueous solution with a series of poly(N‐vinyl imidazole)‐based hydrogels. The hydrogels were synthesized by the crosslinking of N‐vinyl imidazole with four different crosslinkers with γ rays as initiators. The well‐characterized hydrogels were used as Sr(II) sorbents. Sr(II) uptake was determined with a colorimetric method with Rose Bengal anionic dye. Scanning electron microscopy–energy‐dispersive spectroscopy analysis of the Sr(II)‐loaded polymers was recorded to ascertain the uptake of Sr(II) ions. The experimental adsorption values were analyzed with the Freundlich and Temkin equations, and the kinetics of adsorption were investigated with a pseudo‐second‐order sorption kinetic model. The results show that the equilibrium data fit well in the Freundlich isotherm and followed a pseudo‐second‐order kinetic model. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
ISSN:0021-8995
1097-4628
DOI:10.1002/app.35369