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REVISTA DE CHIMIE
Cite as: Rev. Chim.
https://doi.org/10.37358/Rev.Chim.1949

OSIM Nr. R102355
ISSN Online 2668-8212
ISSN Print: 1582-9049
ISSN-L: 1582-9049

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Revista de Chimie (Rev. Chim.), Year 2014, Volume 65, Issue 4,





Aura Daniela RADU, Alexanru WOINAROSCHY, Eugenia PANTURU
Uranium Extraction in Ultrasound Field from Contaminated Soils

Abstract:

A study of uranium anion complexes extraction, from radioactively contaminated soils, under the influence of ultrasonic field is presented. The dynamics of uranium extraction has been studied for four soil types characterized in terms of particle size, structure and chemical composition using three extraction reagent types: a) water, b) 0.1 M sulfuric acid solution, and c) chloro-sodium solution - 100 g / L sodium chloride + 10 g / L sodium carbonate, mass ratio solid/liquid 1:2, for 30 min, temperature 20° ± 2°C, in ultrasound field, frequency 24 kHz and power 400 W. If in case of decontamination in normal conditions the higher decontamination degree was approx. 80%; using ultrasound field led to a decontamination degree of almost 100%. Using ultrasound led to values of comparable or higher degree of soils decontamination with approx. 15-20% compared to classical decontamination by chemical cleaning. From economical point of view, decontamination using ultrasound of radioactive contaminated soils, compared to chemical cleaning in normal conditions, is an expensive method. This method can be used when is required a fast, and a more efficient decontamination, Keywords: soil decontamination, radionuclide, ultrasound

Issue: 2014, Volume 65, Issue 4
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