Volume 89, Issue 8 pp. 2013-2018

Determination of the competitive adsorption of heavy metal ions on poly(n-vinyl-2-pyrrolidone/acrylic acid) hydrogels by differential pulse polarography

Tuncer Çaykara

Tuncer Çaykara

Department of Chemistry, Faculty of Art and Science, Gazi University, 06500 Besevler, Ankara, Turkey

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Recai İnam

Corresponding Author

Recai İnam

Department of Chemistry, Faculty of Art and Science, Gazi University, 06500 Besevler, Ankara, Turkey

Department of Chemistry, Faculty of Art and Science, Gazi University, 06500 Besevler, Ankara, Turkey===Search for more papers by this author
First published: 10 June 2003
Citations: 30

Abstract

Poly(N-vinyl-2-pyrrolidone) and poly(N-vinyl-2-pyrrolidone/acrylic acid) hydrogels were prepared by gamma irradiation for the removal of heavy metal ions (i.e., lead, copper, zinc, and cadmium) from aqueous solutions containing different amounts of these ions (2.5–10 mg/L) and at different pH values (1–13). The observed affinity order in adsorption of these metal ions on the hydrogels was Zn(II) > Pb(II) > Cu(II) > Cd(II) under competitive conditions. The optimal pH range for the heavy metal ions was from 7 to 9. The adsorption of the heavy metal ions decreased with increasing temperature in both water and synthetic seawater conditions. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 2013–2018, 2003

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