Uranium(VI) sorption behavior onto amberlite CG-400 anion exchange resin: Effects of pH, contact time, temperature and presence of phosphate

Semnani, F ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.1016/j.anucene.2012.05.010
  3. Publisher: Elsevier , 2012
  4. Abstract:
  5. In this paper, uranium sorption onto amberlite CG-400 anion exchange resin in the presence of phosphate anions was studied. The effect of contact time between the sorbent and aqueous solution, pH, initial concentration of uranium and temperature were also investigated. Kinetic studies show that uranium sorption onto amberlite CG-400 resin in the presence of phosphate is a fast process and follows pesudo-second-order kinetics. It was also found that the pH value and the presence of phosphate play very important roles in the uranium sorption onto CG-400 resin. Optimum pH for uranium sorption in the presence of phosphate anions was about 3.5. The experimental sorption isotherm is successfully described by Langmuir and Freundlich models. The maximum uranium sorption capacity was 57.14 and 112.36 mg g -1 in the absence and presence of phosphate anion, respectively
  6. Keywords:
  7. Amberlite CG-400 ; Ion exchange resin ; Phosphate effects ; Uranium sorption ; Amberlite ; Anion exchange resins ; Contact time ; Fast process ; Freundlich models ; Initial concentration ; Kinetic study ; Langmuirs ; Optimum pH ; pH value ; Phosphate anions ; Phosphate effect ; Sorption capacities ; Sorption isotherms ; Ion exchange resins ; Solutions ; Sorption ; Uranium ; Uranium compounds ; pH effects
  8. Source: Annals of Nuclear Energy ; Volume 48 , October , 2012 , Pages 21-24 ; 03064549 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0306454912001673