@inproceedings{2756e5024c7e4f08ae1ea800dbec9883,
title = "Effect of cement water on UO2 solubility",
abstract = "To assess the stability of spent fuel in the highly alkaline chemical environment of the Belgian Supercontainer design, static leach experiments were performed with depleted UO2 and 238Pu-doped UO2 at different SA/V ratios for 1.5 years in cement waters (11.7-9-10-8 mol. L-1 and independent of the pH, the U(VT) release from the UO2 surface was enhanced by the OH- concentration, leading to soluble U concentrations up to 10-5 mol. L-1 at high SA/V and under the influence of radiolysis. Together with the high Ca concentration, this can lead to the formation of Ca-U(VI) colloids as precursor of Ca-U(VI) secondary phases, decreasing the soluble U concentration. The precipitation of Ca-U secondary phases was however not clearly evidenced by surface analyses.",
keywords = "cement ground water, Dissolution, supercontainer concept, Uranium dioxide",
author = "Christelle Cachoir and Thierry Mennecart and Karel Lemmens",
note = "Publisher Copyright: {\textcopyright} 2014 Materials Research Society.; 37th International Symposium on the Scientific Basis for Nuclear Waste Management ; Conference date: 29-09-2013 Through 03-10-2013",
year = "2014",
doi = "10.1557/opl.2014.654",
language = "English",
volume = "1665",
series = "Materials Research Society Symposium Proceedings",
publisher = "MRS - Materials Research Society",
pages = "267--273",
editor = "Lara Duro and Javier Gimenez and Ignasi Casas and {de Pablo}, Joan",
booktitle = "Scientific Basis for Nuclear Waste Management XXXVII",
}