publication . Article . 2018

The Efficiency of Strontium-90 Desorption Using Iron (III) Solutions in the Decontamination Process of Radioactive Soils

Olga Vladimirovna Cheremisina; Vasiliy Sergeev; Varvara Alabusheva; Alexander Fedorov; Alexandra Iliyna;
Open Access English
  • Published: 01 Mar 2018 Journal: Journal of Ecological Engineering (issn: 2299-8993, Copyright policy)
  • Publisher: Polish Society of Ecological Engineering (PTIE)
Abstract
The paper presents the investigation on the estimated efficiency of iron (III) chloride solutions in the decontamination process of radioactive soils with 90 Sr, according to kinetic and thermodynamic characteristics of the desorption process. The specific 90 Sr radioactivity of soil samples was (3.9±0.3)·104 Bq·g. The adsorption isotherms of Sr 2+ and Fe 3+ are described with the Langmuir equation. The values of Gibbs energy G0298 = -4.65 kJ·mol -1 and equilibrium ion exchange constant Keq = 6,5 confirm the hypothesis of strontium removal from soils with iron (III) cations. The effectiveness of the method is substantiated by experimental and calculated res...
Subjects
free text keywords: decontamination of radionuclides, thermodynamic and kinetics investigations, desorption of strontium-90, iron (III) chloride, Environmental technology. Sanitary engineering, TD1-1066, Environmental sciences, GE1-350
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