Removal of uranyl ions in aquatic mediums by using a new material: Gallocyanine grafted hydrogel

Ulusoy H. İ., Şimşek S.

JOURNAL OF HAZARDOUS MATERIALS, cilt.254, ss.397-405, 2013 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 254
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1016/j.jhazmat.2013.04.004
  • Dergi Adı: JOURNAL OF HAZARDOUS MATERIALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.397-405
  • Anahtar Kelimeler: Adsorption, Uranyl ions, Gallocyanine, Polyacrylamide, Aquatic medium, PHASE EXTRACTIVE PRECONCENTRATION, URANIUM VI IONS, AQUEOUS-SOLUTIONS, SELECTIVE ADSORPTION, SORPTION BEHAVIOR, FUNCTIONAL-GROUP, CHELATING RESIN, METAL-IONS, SEPARATION, ACID
  • Sivas Cumhuriyet Üniversitesi Adresli: Evet

Özet

A new material containing gallocyanine (GC) grafted polyacyril amide (PAA) was synthesized and its adsorption ability was examined for the removal of uranyl ions from aqueous media. The new developed adsorbent was characterized by FTIR, SEM, and PZC analysis. Adsorption of UO22+ ions from aqueous solution as a function of ion concentration, pH, ionic strength, temperature, and reusability of adsorbent was investigated in detail. The adsorption data were analyzed by using the Langmuir, Freundlich and Dubinin-Radushkevich (DR) models. The adsorption of UO22+ increased with pH and reached a plateau value in the pH range 5-6. The adsorption of UO22+ ions were not affected by increasing ionic strength. The adsorption mechanism followed an endothermic and spontaneous process with increased disorderliness at adsorbate/adsorbent interface. The adsorption process followed a pseudo-second-order kinetics. The new developed material is a potential adsorbent for effective removal of uranyl ions from aquatic solutions. (C) 2013 Elsevier B.V. All rights reserved.