Development of silver nanoparticle–doped adsorbents for the separation and recovery of radioactive iodine from alkaline solutions

Treatment of zeolite adsorbed material as a potential nuclear waste glass‐ceramic matrix

“…Ion exchange method, co‐precipitation method, 6 and adsorption method 7 are commonly used in the treatment of radioactive wastes. Adsorption has become a popular method because of its low‐energy consumption and simple operation 8–10 …”

“…Adsorption has become a popular method because of its low-energy consumption and simple operation. [8][9][10] At present, adsorbents commonly used for radioactive waste treatment include activated carbon, porous materials, and natural materials. 7,9,11 As commonly porous materials, silica gel and zeolite were used to adsorb radioactive wastes.…”

“…Preceramic polycarbosilane polymers are commonly used as precursors to make ceramic fibers 10,39 and ceramic matrix. [7][8][9]40,41 The chemical and volume changes that accompany ceramization of the polymer during pyrolysis have been documented in several studies.…”

Silver Nanomaterial-Immobilized Desalination Systems for Efficient Removal of Radioactive Iodine Species in Water

“…In addition, these materials possess high reactivity towards specific radioactive elements without additional chelating molecules [ 15 ]. Among them, silver metal-based materials have widely been used in the desalination of radioactive iodine wastes because of the high affinity of silver towards iodine species [ 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 ]. In a typical desalination procedure, these adsorbents should immerse in contaminated water for the removal of radioactive iodine, and thus radioactive elements-containing solid wastes generated by this process need to be separated from water [ 31 ].…”

Estudo de rotas de purificação em processos de produção de Mo-99 e I-131 de fissão

“…Sua formação é acompanhada de outros nuclídeos como I-127 (estável), I-129 (t½ 1,5*10 7 a), I-133 (t½21h), I-130 (t½ 12h), I-135 (t½ 6,6h), I-132 (t½ 2,3h) em quantidades em massa inferiores ao I-131 (t½ 8d), dessa forma o repouso do material inicial por uma semana aproximadamente eliminaria boa parte destes nuclídeos(VILLIERS, 2003).O processo de recuperação de iodo na forma de iodeto tem início na primeira etapa de cromatografia de troca iônica, onde ocorre a principal separação deste isótopo. Em seguida, ele deve ser submetido a etapas subsequentes de purificação(KIM et al, 2017).…”