TY - GEN
T1 - Progress on experimental protocols, formulation of conditioning materials and performance assessment for the direct conditioning of RLOW
AU - Phung, Quoc Tri
AU - Nguyen, Thi Nhan
AU - Frederickx, Lander
AU - Lambertin, David
AU - Pancotti, Federica
AU - Guerra, Mafalda
AU - Sciacqua, Rossella
AU - Hayes, Martin
AU - Provis, John
AU - Davy, Catherine A.
AU - Mossini, Eros
AU - Colombo, Stefano
AU - Moschetti, Ilaria
AU - Magugliani, Gabriele
AU - Macerata, Elena
AU - Mariani, Mario
AU - Shkuropatenko, Vladimir
AU - Bucur, Crina
AU - Esperanza, Lara
AU - Rodriguez Alcala, Marina
AU - Piña Lucas, Gabriel
N1 - Score=3
PY - 2021/9/30
Y1 - 2021/9/30
N2 - WP5 proposes to investigate a direct route for the conditioning of Radioactive Liquid Organic Waste (RLOW). After a short state-of-the-art, which highlights the high potential of alkali-activated materials (AAM) for organic liquid encapsulation, this article presents the main findings of the partners involved in Task 5.3 (NUCLECO/SOGIN, NNL/USFD, CIEMAT, POLIMI, SCK CEN, KIPT, RATEN) to this date. Other Tasks relate to WP management (T5.1), RLOW inventory (T5.2) and durability assessment (T5.4 not started yet). Task 5.3 (T5.3) aims to design reference formulations of conditioning materials for the immobilization of RLOW, prior to Task 5.4, which focuses on the durability assessment of conditioned RLOW by the direct route. Since the start of PREDIS, the partners in T5.3 have proposed varied AAM formulations, based on metakaolin, blast furnace slag, volcanic tuff or their mixes as alumino-silicate solid precursors. The latter are alkali-activated with NaOH, KOH or metasilicate (sodium or potassium based). Varied RLOW are incorporated in the AAM, the most viscous and chemically simple RLOW being those with the greatest incorporation rate. For highly fluid RLOW (e.g. TBP, kerosene or scintillating cocktails), the use of a surfactant proves necessary. Optimizations of the RLOW/AAM mixes are still on going to this date, with already very promising preliminary results.
AB - WP5 proposes to investigate a direct route for the conditioning of Radioactive Liquid Organic Waste (RLOW). After a short state-of-the-art, which highlights the high potential of alkali-activated materials (AAM) for organic liquid encapsulation, this article presents the main findings of the partners involved in Task 5.3 (NUCLECO/SOGIN, NNL/USFD, CIEMAT, POLIMI, SCK CEN, KIPT, RATEN) to this date. Other Tasks relate to WP management (T5.1), RLOW inventory (T5.2) and durability assessment (T5.4 not started yet). Task 5.3 (T5.3) aims to design reference formulations of conditioning materials for the immobilization of RLOW, prior to Task 5.4, which focuses on the durability assessment of conditioned RLOW by the direct route. Since the start of PREDIS, the partners in T5.3 have proposed varied AAM formulations, based on metakaolin, blast furnace slag, volcanic tuff or their mixes as alumino-silicate solid precursors. The latter are alkali-activated with NaOH, KOH or metasilicate (sodium or potassium based). Varied RLOW are incorporated in the AAM, the most viscous and chemically simple RLOW being those with the greatest incorporation rate. For highly fluid RLOW (e.g. TBP, kerosene or scintillating cocktails), the use of a surfactant proves necessary. Optimizations of the RLOW/AAM mixes are still on going to this date, with already very promising preliminary results.
KW - Direct conditioning
KW - Alkali-activated cement
KW - Geopolymer
KW - Encapsulation
KW - Cementation
UR - https://ecm.sckcen.be/OTCS/llisapi.dll/open/47645068
M3 - In-proceedings paper
SP - 52
EP - 66
BT - Proceedings of PREDIS May Workshop 2021
A2 - Oksa, Maria
A2 - Holt, Erika
PB - EC - European Commission
T2 - 2021 - PREDIS workshop
Y2 - 4 May 2021 through 6 May 2021
ER -