Инд. авторы:	Boguslavsky A., Gaskova O., Naymushina O.S
Заглавие:	Assessment of geochemical barriers at preservation of low-level radioactive waste storages
Библ. ссылка:	Boguslavsky A., Gaskova O., Naymushina O.S Assessment of geochemical barriers at preservation of low-level radioactive waste storages // E3S Web of Conferences. - 2019. - Vol.80. - Art.03011. - ISSN 2267-1242.
Внешние системы:	DOI: 10.1051/e3sconf/20198003011; РИНЦ: 38698354; SCOPUS: 2-s2.0-85062841794; WoS: 000467463800023;
Реферат:	eng: The work considers geochemical aspects of the natural and man-made system for storing radioactive waste (RW) from one of the Siberian enterprises of the fuel and nuclear cycle. Careful geochemical testing of key sites of the system allows us to identify geochemical barriers that prevent the spread of uranium outside the sludge storage. In addition, experiments were conducted on the leaching of the sludge material in the laboratory using modern methods for determining the composition of solutions and solid phases, as well as experiments on uranium sorption on the main types of subsoil. Experimental and thermodynamic modeling of uranium deposition processes confirms that the system studied satisfactorily copes with the absorption of uranium taken out of the sludge storage due to dilution and sorption on rocks and bottom sediments. Particularly favorable are bottom sediments rich in organic matter, which bind uranium to organic-mineral complexes.. © 2019 The Authors, published by EDP Sciences.
Ключевые слова:	Sludge materials; Organic-mineral complexes; Low-level radioactive wastes; Geochemical testing; Geochemical barriers; Deposition process; Radioactive wastes; Uranium compounds; Soils; Radioactivity; Radioactive waste storage; Geochemistry; Bottom sediments; Thermodynamic model;
Издано:	2019
Физ. характеристика:	03011
Конференция:	Название: 2018 International Conference on Renewable Energy and Environment Engineering, REEE 2018 Даты проведения: 2018-10-29 - 2018-10-31