Uranium release from contaminated sludge materials and uptake by subsurface sediments: Experimental study and thermodynamic modeling

Gaskova, Olga; Boguslavsky, Alexander; Shemelina, O. V.

doi:10.1016/j.apgeochem.2014.12.018

Cited by 14 publications

(9 citation statements)

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“…In general, the formation of rapidcreekite in nature is related to the low-temperature surface processes such as those occurring in hot springs (Roberts et al 1986;Wen et al 2020), weathering zones of ore deposits (Kruszewski et al 2020), karst caves and springs (Onac et al 2013;De Waele et al 2016;D'Angeli et al 2021) and even Arctic glaciers (Lau et al 2017). Rapidcreekite was also found in technological environments, including pyrometal-lurgical slags (Warchulski et al 2015), electrochemical plant sludges (Gaskova et al 2015), cements (Martínez-Ramírez and Fernández-Carrasco 2012;Zhernovsky et al 2016), and mine tailings (Situm et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Rapidcreekite of anthropogenic origin - ’korkinoite’ from burnt mine dump in the Chelyabinsk coal basin, South Urals, Russia: crystal structure refinement, thermal behavior and spectroscopic characterization

Avdontceva¹,

Золотарев²,

Krivovichev³

et al. 2021

J. Geosci.

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Section: Introductionmentioning

confidence: 99%

Rapidcreekite of anthropogenic origin - ’korkinoite’ from burnt mine dump in the Chelyabinsk coal basin, South Urals, Russia: crystal structure refinement, thermal behavior and spectroscopic characterization

Avdontceva¹,

Золотарев²,

Krivovichev³

et al. 2021

J. Geosci.

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“…Industrial and biochemical processes are believed to be the most sensitive towards the host geological environment. For a short period, they lead to the transformation of composition and structure of rocks and cause mineral, primarily clay, neoformations to appear [7,8].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Liquid Low-Radioactive Waste Repositories on the Mineral Composition of Surrounding Soils

et al. 2020

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Clay minerals may transform in various systems under the influence of geological, biological, or technogenic processes. The most active to the geological environment are technogenic and biochemical processes that, in a relatively short time, can cause transformation of the rocks’ composition and structure and formation of new minerals, especially clay minerals. Isolation of radioactive waste is a complex technological problem. This work considers the influence of alkaline solutions involved in the radioactive waste (RW) disposal process. In the Russian Federation, due to historical reasons, radioactive waste has accumulated in various types of repositories and temporary storages. All these facilities are included in the federal decommissioning program. Solid radioactive wastes in cement slurries at the landfill site of the Angara Electrolysis Chemical Combine are buried in sandstones and currently suffer the influence of a highly alkaline and highly saline groundwater storage area, which leads to a considerable transformation of the sandstones. This influence results in the formation of peculiar "technogenic” illites that have smectite morphology but illite structure which was confirmed by modeling of X-ray diffraction (XRD) patterns. The described transformations will lead to the increase of porosity and permeability of the sandstones. The research results can be used in assessing the potential contamination of the areas adjacent to the disposal site and in planning the decommissioning measures of this facility.

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“…Both natural and man-made structures can act as barriers to safety, which either detain pollutants due to low filtration rates or increased sorption characteristics [1][2][3]. With the preservation of sludge storage facilities that were designed dozens of years ago, the reliability of natural barriers is of particular importance [4][5][6]. Determination of reliability and sufficiency of the existing safety barriers in the future requires creation of a migration model for leading pollutants based on geological, hydrogeological and geochemical features of the site [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

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

2019

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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.

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Uranium release from contaminated sludge materials and uptake by subsurface sediments: Experimental study and thermodynamic modeling

Cited by 14 publications

References 20 publications

Rapidcreekite of anthropogenic origin - ’korkinoite’ from burnt mine dump in the Chelyabinsk coal basin, South Urals, Russia: crystal structure refinement, thermal behavior and spectroscopic characterization

Rapidcreekite of anthropogenic origin - ’korkinoite’ from burnt mine dump in the Chelyabinsk coal basin, South Urals, Russia: crystal structure refinement, thermal behavior and spectroscopic characterization

The Influence of Liquid Low-Radioactive Waste Repositories on the Mineral Composition of Surrounding Soils

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

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Uranium release from contaminated sludge materials and uptake by subsurface sediments: Experimental study and thermodynamic modeling

Cited by 14 publications

References 20 publications

Rapidcreekite of anthropogenic origin - &rsquo;korkinoite&rsquo; from burnt mine dump in the Chelyabinsk coal basin, South Urals, Russia: crystal structure refinement, thermal behavior and spectroscopic characterization

Rapidcreekite of anthropogenic origin - &rsquo;korkinoite&rsquo; from burnt mine dump in the Chelyabinsk coal basin, South Urals, Russia: crystal structure refinement, thermal behavior and spectroscopic characterization

The Influence of Liquid Low-Radioactive Waste Repositories on the Mineral Composition of Surrounding Soils

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

Contact Info

Product

Resources

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Rapidcreekite of anthropogenic origin - ’korkinoite’ from burnt mine dump in the Chelyabinsk coal basin, South Urals, Russia: crystal structure refinement, thermal behavior and spectroscopic characterization

Rapidcreekite of anthropogenic origin - ’korkinoite’ from burnt mine dump in the Chelyabinsk coal basin, South Urals, Russia: crystal structure refinement, thermal behavior and spectroscopic characterization