Removal of entrained organic phase from raffinate in spent fuel reprocessing with graphene-based composites
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In spent fuel reprocessing, the phase entrainment in the solvent extraction process would result in solvent loss, low efficiency and other adverse effects. As a superhydrophobic material with low density and large specific surface area, graphene aerogel may have potential applications in spent fuel reprocessing for the removal of entrained organic phase from raffinate. In this paper, the phase entrainment in the solvent extraction process was investigated by using centrifugal extractor as the extraction equipment. It was found the operation conditions, such as rotor speed, flow rates and phase ratio, have a significant effect on the phase entrainment. Afterwards, a kind of graphene-based superhydrophobic composite was synthesized and used to treat the entrained organic phase in raffinate by a simple adsorption process. The results showed that the proposed method can quickly reduce the content of the organic phase in raffinate to less than 0.1%, showing potential applications in spent fuel reprocessing.
KeywordsCentrifugal contactor Phase entrainment Spent fuel reprocessing Graphene aerogel
This work was financially supported by National Natural Science Foundation of China (Nos. 11305244, U1867203) and “Strategic Priority Research Program” of the Chinese Academy of Science (Grant No. XDA02030000).
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Conflict of interest
No conflict of interest exists in the submission of this manuscript and manuscript is approved by all authors for publication. I would like to declare on behalf of my co-authors that the work described is original research that has not been published previously, and not under consideration for publication elsewhere, in whole or in part. All the authors listed have approved the manuscript that is enclosed.
- 5.Wang S, Zhang T, Zhao Q, Liu Y, Wu Q (2013) Experimental study on aqueous phase entrainment in a mixer-settler with double stirring mode. China Pet Process Petrochem Technol 15(2):59–62Google Scholar
- 10.Zhang X, Zhang T, Wang Z, Ren Z, Yan S, Duan Y, Zhang J (2019) Ultralight, superelastic and fatigue resistant graphene aerogel templated by graphene oxide liquid crystal stabilized air bubbles. ACS Appl Mater Interfaces 11(1):1303–1310. https://doi.org/10.1021/acsami.8b18606 CrossRefPubMedGoogle Scholar
- 20.Zhou J, Zhou X, Yu W, Zhang C, He X (1997) Miniature centrifugal contactor for radiochemical separation. J Tsinghua Univ 37:46–49Google Scholar