TY - JOUR

T1 - Assessment of geochemical barriers at preservation of low-level radioactive waste storages

AU - Boguslavsky, Anatoly

AU - Gaskova, Olga

AU - Naymushina, Olga

N1 - Publisher Copyright: © 2019 The Authors, published by EDP Sciences.

PY - 2019/1/15

Y1 - 2019/1/15

N2 - 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..

AB - 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..

KW - URANIUM

UR - http://www.scopus.com/inward/record.url?scp=85062841794&partnerID=8YFLogxK

U2 - 10.1051/e3sconf/20198003011

DO - 10.1051/e3sconf/20198003011

M3 - Conference article

AN - SCOPUS:85062841794

VL - 80

JO - E3S Web of Conferences

JF - E3S Web of Conferences

SN - 2555-0403

M1 - 03011

T2 - 2018 International Conference on Renewable Energy and Environment Engineering, REEE 2018

Y2 - 29 October 2018 through 31 October 2018

ER -