Separation of Radionuclides from Spent Decontamination Solutions onto Selective Inorganic-Organic Composite Absorbers

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Separation of Radionuclides from Spent Decontamination Solutions onto Selective Inorganic-Organic Composite Absorbers

Popis výsledku v původním jazyce

Using inorganic absorbers, the possibility of direct separation of radionuclides from decontamination solutions produced in nuclear power plant operation was followed. Real acidic waste from the AP-Citrox process (KDR solution) and simulated waste from electrochemical decontamination (Electrolysate) were used. Mass distribution coefficients for the uptake of targeted radionuclides were determined and chemical stability of individual materials evaluated in batch tests. Using modified polyacrylonitrile binding matrix, the most promising of them were granulated and tested in dynamic column experiments, consequently. Results obtained in the both KDR and Electrolysate solutions were similar. They revealed that direct separation of radionuclides was not possible because of complexants (oxalic acid, citric acid, EDTA) present in studied solution. Thus, the degradation of complexants (e.g. by photocatalytic decomposition) prior to sorption is necessary.

Název v anglickém jazyce

Separation of Radionuclides from Spent Decontamination Solutions onto Selective Inorganic-Organic Composite Absorbers

Popis výsledku anglicky

Using inorganic absorbers, the possibility of direct separation of radionuclides from decontamination solutions produced in nuclear power plant operation was followed. Real acidic waste from the AP-Citrox process (KDR solution) and simulated waste from electrochemical decontamination (Electrolysate) were used. Mass distribution coefficients for the uptake of targeted radionuclides were determined and chemical stability of individual materials evaluated in batch tests. Using modified polyacrylonitrile binding matrix, the most promising of them were granulated and tested in dynamic column experiments, consequently. Results obtained in the both KDR and Electrolysate solutions were similar. They revealed that direct separation of radionuclides was not possible because of complexants (oxalic acid, citric acid, EDTA) present in studied solution. Thus, the degradation of complexants (e.g. by photocatalytic decomposition) prior to sorption is necessary.

Druh

D - Stať ve sborníku

CEP obor

DL - Jaderné odpady, radioaktivní znečištění a kontrola

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2002

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

14th Radiochemical Conference

ISBN

80-01-02530-6

ISSN

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e-ISSN

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Počet stran výsledku

1

Strana od-do

299-299

Název nakladatele

ČVUT

Místo vydání

Praha

Místo konání akce

Mariánské lázně

Datum konání akce

14. 4. 2002

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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