NDLI: Ion exchange resins destruction in a stirred supercritical water oxidation reactor

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Ion exchange resins destruction in a stirred supercritical water oxidation reactor

Content Provider	Semantic Scholar
Author	Leybros, Antoine Roubaud, Anne Guichardon, Pierrette Boutin, Olivier
Copyright Year	2010
Abstract	Abstract Spent ion exchange resins (IERs) are radioactive process wastes for which there is no satisfactory industrial treatment. Supercritical water oxidation offers a viable treatment alternative to destroy the organic structure of resins, used to remove radioactivity. Up to now, studies carried out in supercritical water for IER destruction showed that degradation rates higher than 99% are difficult to obtain even using a catalyst or a large oxidant excess. In this study, a co-fuel, isopropanol, has been used in order to improve degradation rates by initiating the oxidation reaction and increasing temperature of the reaction medium. Concentrations up to 20 wt% were tested for anionic and cationic resins. Total organic carbon reduction rates higher than 99% were obtained from this process, without the use of a catalyst. The influence of operating parameters such as IERs feed concentration, nature and counterions of exchanged IERs were also studied.
Starting Page	369
Ending Page	375
Page Count	7
File Format	PDF HTM / HTML
DOI	10.1016/j.supflu.2009.08.017
Volume Number	51
Alternate Webpage(s)	http://www.isasf.net/fileadmin/files/Docs/Barcelona/ISASF%202008/PDF/Posters/Process%20&%20Reactions/P_PR_12.pdf
Alternate Webpage(s)	https://doi.org/10.1016/j.supflu.2009.08.017
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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