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Determination of the competitive adsorption of heavy metal ions on poly( n ‐vinyl‐2‐pyrrolidone/acrylic acid) hydrogels by differential pulse polarography
Author(s) -
Çaykara Tuncer,
İnam Recai
Publication year - 2003
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.12328
Subject(s) - polarography , adsorption , metal ions in aqueous solution , acrylic acid , cadmium , self healing hydrogels , aqueous solution , chemistry , metal , polymer chemistry , zinc , nuclear chemistry , copper , 2 pyrrolidone , inorganic chemistry , copolymer , organic chemistry , polymer
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