Chemical stability of caesium iodide ...
Type de document :
Article dans une revue scientifique
URL permanente :
Titre :
Chemical stability of caesium iodide deposits in air/steam atmosphere
Auteur(s) :
OBADA, Dorel [Auteur]
HIJAZI, Houssam [Auteur]
Paul, Jean-François [Auteur]
Gasnot, Laurent [Auteur]
GREGOIRE, Anne Cecile [Auteur]
MAMEDE, Anne Sophie [Auteur]
Cantrel, Laurent [Auteur]
HIJAZI, Houssam [Auteur]
Paul, Jean-François [Auteur]
Gasnot, Laurent [Auteur]

GREGOIRE, Anne Cecile [Auteur]
MAMEDE, Anne Sophie [Auteur]
Cantrel, Laurent [Auteur]
Titre de la revue :
Journal of Hazardous Materials
Pagination :
124519
Éditeur :
Elsevier
Date de publication :
2020
ISSN :
0304-3894
Discipline(s) HAL :
Chimie
Résumé en anglais : [en]
Iodine compounds that may be released in case of severe nuclear accident will have important radiotoxicity if they are disseminated in air. One of the most important iodine species is CsI that is deposited on the surfaces ...
Lire la suite >Iodine compounds that may be released in case of severe nuclear accident will have important radiotoxicity if they are disseminated in air. One of the most important iodine species is CsI that is deposited on the surfaces of the reactor coolant system. However, depending on the conditions, CsI can volatilize or react with oxidants to produce I2(g). Theoretical and experimental studies demonstrate that oxidation of iodide depends on the temperature and in the presence of oxidants in the gas. It is also slightly influenced by the crystallinity of the CsI particles and the nature of the support. In case of a high temperature deposition, the iodine release started at temperature lower than 300°C. For the CsI vapour and aerosol depositions, the iodine is detected only at temperature above 450 °C and become very important above 550 °C.Lire moins >
Lire la suite >Iodine compounds that may be released in case of severe nuclear accident will have important radiotoxicity if they are disseminated in air. One of the most important iodine species is CsI that is deposited on the surfaces of the reactor coolant system. However, depending on the conditions, CsI can volatilize or react with oxidants to produce I2(g). Theoretical and experimental studies demonstrate that oxidation of iodide depends on the temperature and in the presence of oxidants in the gas. It is also slightly influenced by the crystallinity of the CsI particles and the nature of the support. In case of a high temperature deposition, the iodine release started at temperature lower than 300°C. For the CsI vapour and aerosol depositions, the iodine is detected only at temperature above 450 °C and become very important above 550 °C.Lire moins >
Langue :
Anglais
Comité de lecture :
Oui
Audience :
Internationale
Vulgarisation :
Non
Source :
Date de dépôt :
2022-01-25T05:01:26Z
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- https://hal.archives-ouvertes.fr/hal-03539663/document
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