Uranium extraction from TRISO-coated fuel particles using supercritical CO2 containing tri-n-butyl phosphate

Zhu, Liyang; Duan, Wuhua; Xu, Jian; Zhu, Yongjun

doi:10.1016/j.jhazmat.2012.09.072

Cited by 16 publications

(9 citation statements)

References 27 publications

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“…Once the fuel kernels are exposed, methods of extracting the fissile materials include traditional aqueous digestion, supercritical CO 2 solvent extraction (as the carrier for an appropriate extractant), and molten salt dissolution. [628][629][630][631][632][633][634][635][636][637][638]…”

Section: Processes Applied To Triso-type Fuelsmentioning

confidence: 99%

Nuclear Fuels and Reprocessing Technologies: A U.S. Perspective

Fredrickson

Yoo

2021

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Reprocessing and/or waste management issues are of concern to the "back end" of the nuclear fuel cycle. Of course, there are a great many "nuclear fuel cycle" scenarios to consider; if not in practice, then at least in theory. The simplest conceptually is the "once through" fuel cycle in which the spent fuel is discarded. The more complex fuel cycle scenarios involve reprocessing spent nuclear fuels and a family of nuclear reactor technologies to accommodate burning and breeding for various military and commercial needs. Therefore, the selection of a specific "fuel cycle" is what ultimately imposes the engineering requirements of the reprocessing and waste management technologies. No one part is independent of the other parts in a fuel cycle flowsheet; all parts should be fully integrated. This paper presents a summary of nuclear chemistry processes, nuclear reactor technologies, associated nuclear fuel types, and the reprocessing technologies that serve the different nuclear fuel types. Comprehending how this series of topics are related to each other is a prerequisite to understanding the requirements of any reprocessing strategy. The summary materials presented here are selective, as opposed to comprehensive. More detailed information on any one subject can be found in the reference materials.

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Section: Processes Applied To Triso-type Fuelsmentioning

confidence: 99%

Nuclear Fuels and Reprocessing Technologies: A U.S. Perspective

Fredrickson

Yoo

2021

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“…In recent years, a more and more attention has been paid to the separation and purification of metal ions through supercritical fluid extraction (SFE) [1,2]. The potential of CO 2 as a solvent for SFE is interesting as it is nontoxic, nonflammable, abundantly available, and recyclable, minimizing the problems associated with waste liquid [3,4].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, small amounts of a co-solvent are known to increase the polarity of fluids as well as enhance the recovery of specific metal species. The introduction of co-solvents with Sc-CO 2 can not only simplify the subsepuent metal recovery process (when compared to conventional processes), but also cause a reduction in reagent consumption [13]. Therefore, Sc-CO 2 extraction has become a promising technology for the recovery of metal ions from environmental samples.…”

Section: Introductionmentioning

confidence: 99%

Direct extraction of palladium and silver from waste printed circuit boards powder by supercritical fluids oxidation-extraction process

Liu

Zhang

2016

Journal of Hazardous Materials

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“…Several studies have been reported on SFE of actinides and lanthanides with TBP·HNO 3 adduct from various matrices viz. assorted radioactive waste matrices and spent nuclear fuels from different nuclear reactors (Shadrin et al, 2008;Zhu et al, 2012;Shamsipur et al, 2001;Shimada et al, 2006). Uranium present in spent nuclear fuel has been selectively recovered with good separation factors from fission products by SFE followed by counter current chromatographic separation (Myasoedov et al, 2009).…”

Section: Introductionmentioning

confidence: 99%