An efficient capture of cesium from cesium iodide (CsI) off-gas by aluminosilicate sorbents in the presence of oxygen

Yang, Joon-Eon; Yoon, Joo Young; Hong, Seok Min; Lee, Ju Ho; Cho, Yung-Zun

doi:10.1016/j.jiec.2019.04.029

Cited by 6 publications

(2 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…us, the transportation of CsI to the LiCl molten salt electrolyte will require a large gas treatment system, which becomes an additional process burden on the whole EOR process. Meanwhile, the CsI treatment technique has been well established as a head-end process, from volatilization to the immobilization, as the pre-EOR process of pyroprocessing [1,12,13]. Subsequently, it is considered that the removal of CsI from SNFs before EOR processing is a better strategy in terms of the integrated process efficiency of the EOR process and also the whole pyroprocessing.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Electrochemical Behavior of CsI in LiCl Molten Salt

Kim¹,

Lee²,

Jeon³

et al. 2020

Science and Technology of Nuclear Installations

View full text Add to dashboard Cite

The electrochemical behavior of CsI in LiCl molten salt was investigated to identify its impact on the electrolytic oxide reduction of oxide-phase spent nuclear fuels by combined electrolysis and cyclic voltammetry experiments of LiCl-CsI in comparison with LiCl, LiCl-CsCl, and LiCl-LiI. It was found that Cs+ ions were hardly involved in the cathode reaction, and reduction of Li+ ions occurred dominantly in the cathode. In contrast, incorporation of I− ions induced low-potential anode reaction compared with the I− ion-free cases. Such additional electrochemical reaction resulted in the generation of I2 and/or ICl gases, which would increase a process burden for treating 129I with exceptionally long lifetime. In this respect, separating CsI from spent nuclear fuel before the electrolytic oxide reduction is recommended for the purpose of efficient waste management.

show abstract

Section: Resultsmentioning

confidence: 99%

“…Compounds of Cs, including CsI, in SNFs are expected to be removed by high-temperature heat treatment to form volatile phases [12,13]. us, performing heat treatment is considered to be beneficial for the EOR process [1,5].…”

Section: Introductionmentioning

confidence: 99%