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Isotopic exchange inside impregnated activated carbons

Résumé

Activated carbons (AC) have been used for the removal of iodine within ventilation networks of nuclear facilities. More particularly, the commonly used nuclear grade AC are co-impregnated with potassium iodide (KI, 1 wt%) and triethylenediamine (TEDA, < 5 wt%) [1]. The present study aims to gain insights on the importance of isotopic exchange reaction resulting from KI as a comparison with other mechanisms (physisorption and chemisorption). The presence of isotopic exchange in some configurations has been qualitatively proven. However, the quantification of this reaction must be evaluated by comparing the breakthrough curves in active and inactive. Hence, a specific test bench allowing the determination of breakthrough curve in active is under validation.

Domaines

Chimie
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Dates et versions

irsn-04098795 , version 1 (16-05-2023)

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Identifiants

  • HAL Id : irsn-04098795 , version 1

Citer

Hantao Lin, Mouheb Chebbi, Celine Monsanglant Louvet, Benoit Marcillaud, Audrey Roynette, et al.. Isotopic exchange inside impregnated activated carbons. Carbon Chemistry and Materials (Virtual), Nov 2021, Rome, Italy. ⟨irsn-04098795⟩
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