Removal of Ra-226 from aqueous media and its thermodynamics and kinetics


Erentürk S. , Kaygun A. K.

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, vol.311, no.2, pp.1227-1233, 2017 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 311 Issue: 2
  • Publication Date: 2017
  • Doi Number: 10.1007/s10967-016-5047-3
  • Title of Journal : JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
  • Page Numbers: pp.1227-1233
  • Keywords: Adsorption, Radium-226, Aqueous media, Adsorption isotherms, Thermodynamic, Kinetics, ADSORPTION, SORPTION, BEHAVIOR, URANIUM, RADIONUCLIDES, EQUILIBRIUM, PARAMETERS, ISOTHERM, MODELS, DYE

Abstract

The composite adsorbent prepared by mixing of polyacrylonitrile and clinoptilolite was used for investigating the adsorption behaviour of Ra-226 in column system. The effective parameters like initial activity concentration, pH of the solution, contact time and temperature for adsorption behaviour of Ra-226 were studied. Adsorption efficiency of Ra-226 on composite adsorbent from aqueous solution was determined to 98.73 +/- 0.59 % at pH 5.0 and 30 A degrees C in a short time. The isotherm models were studied to evaluated adsorption characteristics of Ra-226 onto composite adsorbent. The thermodynamic parameters were showing that the processes for Ra-226 were exothermic. Adsorption kinetics of the radium is also studied.