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 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 311 Issue: 2
  • Publication Date: 2017
  • Doi Number: 10.1007/s10967-016-5047-3
  • Journal Name: JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • 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
  • Istanbul Technical University Affiliated: Yes

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.