Uranyl ion adsorptivity of N-vinyl 2-pyrrolidone/acrylonitrile copolymeric hydrogels containing amidoxime groups

Pekel N., ŞAHİNER N., Akkaş P., Güven O.

Polymer Bulletin, vol.44, no.5-6, pp.593-600, 2000 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 44 Issue: 5-6
  • Publication Date: 2000
  • Doi Number: 10.1007/s002890070083
  • Journal Name: Polymer Bulletin
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.593-600
  • Ankara University Affiliated: No

Abstract

N-vinyl 2-pyrrolidone (VP)/Acrylonitrile (AN) copolymeric hydrogels were synthesized by using γ-radiation and amidoximated for the purpose of uranyl ion adsorption. Optimum amidoximation time was determined by following the uranyl ion, UO22+, adsorption capacity. The adsorption ofamidoximated copolymers was studied from different uranyl ion solutions (1000-1850 ppm). The results of all adsorption studies showed that the interaction between UO22+ and amidoxime groups comply with Langmuir type isotherm. The adsorption capacity was found as 0.54 g UO22+/g dry amidoximated copolymeric hydrogels. From the stoichiometric calculations, it was found that the bonding between UO22+ and amidoxime groups is 1 to 4.