Cesium leaching from γ-irradiated CsA and CsX zeolites

Lima, Enrique; Ibarra, Ilich A.; Lara, V.H.; Bosch, P.; Bulbulian, S.

doi:10.1016/j.jhazmat.2008.03.035

Cited by 8 publications

(3 citation statements)

References 19 publications

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“…The large Cs + cations cannot fit into the small S6R cavities; therefore, over 70% of the Na + cations within NaA zeolite are not exchanged with Cs + cations. However, AIMD calculations at high temperature indicate the potential application of NaA zeolite for the long-term storage of Cs + cations following solidification28, especially with respect to the thermal stability of Cs + cations at the center of S8R. To improve the ion-exchange capability of zeolite, it is essential to choose a suitable framework with cavities suitable for the ionic radius of the counter-cation.…”

Section: Discussionmentioning

confidence: 99%

Atomic sites and stability of Cs+ captured within zeolitic nanocavities

Yoshida

Toyoura

Matsunaga

et al. 2013

Sci Rep

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Zeolites have potential application as ion-exchangers, catalysts and molecular sieves. Zeolites are once again drawing attention in Japan as stable adsorbents and solidification materials of fission products, such as 137Cs+ from damaged nuclear-power plants. Although there is a long history of scientific studies on the crystal structures and ion-exchange properties of zeolites for practical application, there are still open questions, at the atomic-level, on the physical and chemical origins of selective ion-exchange abilities of different cations and detailed atomic structures of exchanged cations inside the nanoscale cavities of zeolites. Here, the precise locations of Cs+ ions captured within A-type zeolite were analyzed using high-resolution electron microscopy. Together with theoretical calculations, the stable positions of absorbed Cs+ ions in the nanocavities are identified, and the bonding environment within the zeolitic framework is revealed to be a key factor that influences the locations of absorbed cations.

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Section: Discussionmentioning

confidence: 99%

Atomic sites and stability of Cs+ captured within zeolitic nanocavities

Yoshida

Toyoura

Matsunaga

et al. 2013

Sci Rep

View full text Add to dashboard Cite

show abstract

“…k 1 was calculated from Eqs. (4) and (5), and k p was calculated from the initial slopes of q vs. t 1/2 , for each sample, as mentioned in Section 3.1. As shown in this table and Fig.…”

Section: Kinetic Studymentioning

confidence: 99%

“…Even trace amounts of radionuclides can be enough to cause concern [1][2][3][4][5]. The Chernobyl accident in 1986 had wide spread radiation health effects including those caused by 137 Cs that has a half-life of 30.5 years [6].…”

Section: Introductionmentioning

confidence: 99%