Treatment of spent NTA-based decontamination solutions View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2006-12

AUTHORS

A. Pavlík, M. Semelová, J. John, K. Černochová, F. Šebesta

ABSTRACT

This study deals with potential treatment of spent NTA-containing decontamination solutions for final disposal. The method proposed is based on the degradation of organic substances followed by the separation of radionuclides. The influence of various parameters (pH value, irradiation time, temperature, catalyst amount, type and various combinations of catalysts) on photocatalytic degradation of NTA has been studied. Photo-Fenton reagent (Fe3+/H2O2) as a homogenous catalyst was found to be much more efficient than the TiO2-based heterogeneous catalyst Degussa P25. Under optimum conditions NTA in a simulant of a spent decontamination solution without or with hydrazine could be degraded within 5 or 9 hours, respectively. The study of sorption properties of a series of absorbers revealed that radiostrontium and radiosilver can be effectively removed from the simulant of a spent decontamination solution even in the presence of NTA, while total NTA degradation is necessary for effective radiocobalt separation. More... »

PAGES

d673-d680

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s10582-006-0564-x

DOI

http://dx.doi.org/10.1007/s10582-006-0564-x

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1049135156


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