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http://hdl.handle.net/1942/45909| Title: | Immobilisation of uranium-contaminated liquid waste in an alkali-activated material (AAM) and subsequent leaching behaviour | Authors: | MOOREN, Angela Bonani, W Popa, K Van Winckel, S Alvarez-Sarandes, R Konings, RJM Beersaerts, G SCHREURS, Sonja SCHROEYERS, Wouter |
Issue Date: | 2025 | Publisher: | Springer | Source: | Journal of Radioanalytical and Nuclear Chemistry, | Status: | Early view | Abstract: | We present a two-step procedure for treating contaminated liquid waste generated during the processing of uranium, specifically residual uranium-contaminated liquid after precipitation. After precipitating U(IV) as sodium diuranate under alkaline conditions, the resulting solution was solidified by immobilising it in an alkali-activated material. Static leaching tests indicated excellent material stability in water. Exposing the material to aggressive chemical conditions (nitric acid) resulted in slow and incomplete dissolution of uranium (and of structural elements) from a thin superficial layer with further passivation. Characterisation of the solid phase was performed to assess the stability of the alkali-activated material under the tested conditions. | Keywords: | Alkali activated materials;Monolithic leaching;Liquid radioactive waste;Uranium immobilisation | Document URI: | http://hdl.handle.net/1942/45909 | ISSN: | 0236-5731 | e-ISSN: | 1588-2780 | DOI: | 10.1007/s10967-025-10111-4 | ISI #: | WOS:001471100000001 | Rights: | The Author(s) 2025 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. | Category: | A1 | Type: | Journal Contribution |
| Appears in Collections: | Research publications |
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| s10967-025-10111-4 (2).pdf | Published version | 2.34 MB | Adobe PDF | View/Open |
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