The effects of radiation chemistry on radiochemistry: when unpaired electrons defy great expectations

Development of experimental irradiation strategies to evaluate the robustness of TODGA and water-soluble BTP extraction systems for advanced nuclear fuel recycling

“…2 and 3. On the other hand, it is possible to find in literature several studies highlighting the relevance of the oxygen presence or radicals coming from water radiolysis in the mechanism of the degradation (Mincher et al, 2009, Mincher., 2018. For that reason, all systems shown in Table 1 were also irradiated in three different ways: (1) in presence of air, (2) in presence of an inert atmosphere such as argon and…”

Stability studies of GANEX system under different irradiation conditions

“…However, others authors such as Modolo et al [10] and Zarzana et al [11] concluded that the presence of the acidic aqueous phase has no obvious effect on the dose rate (d) when irradiation is performed in kerosene or dodecane. Moreover, Mincher [13] explains also that TODGA dose rate seems to be insensitive to the presence or absence of aqueous phases, by varying acidity and/or oxygen concentration flow during irradiation in dodecane. However must be highlighted that all experiments performed by Modolo et al [10], Zarzana et al [11] and Mincher et al [13] were performed in nonpolar diluents, such as kerosene or dodecane where nitric acid is minimum extracted.…”

“…Moreover, Mincher [13] explains also that TODGA dose rate seems to be insensitive to the presence or absence of aqueous phases, by varying acidity and/or oxygen concentration flow during irradiation in dodecane. However must be highlighted that all experiments performed by Modolo et al [10], Zarzana et al [11] and Mincher et al [13] were performed in nonpolar diluents, such as kerosene or dodecane where nitric acid is minimum extracted.…”

Radiolytic stability and effects on metal extraction of N,N,N′-trioctyldiglycolamide, an important TODGA degradation product

“…24 These conditions induce the formation of radicals of the diluents that can cause a radiolysis-induced breakdown of the ligands, producing degradation compounds (DCs), and consequently, increasing the amount of secondary waste. [24][25][26][27] Some of these DCs might exhibit extraction properties similar to the initial ligand, while others could have properties that significantly deviate from the original performance of the system. This divergence could lead to a substantial reduction in process efficiency.…”