Zirconosilicate Sorbent Based on Coal Fly Ash Cenospheres for Cesium Immobilization in a Ceramic Form
- Authors: Vereshchagina T.A.1,2, Kutikhina E.A.1, Buyko O.V.2, Belov A.A.3, Shichalin O.O.3,4, Anshits A.G.1
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Affiliations:
- Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences
- Siberian Federal University
- Far Eastern Federal University
- Sakhalin State University
- Issue: Vol 69, No 10 (2024)
- Pages: 1466-1477
- Section: НЕОРГАНИЧЕСКИЕ МАТЕРИАЛЫ И НАНОМАТЕРИАЛЫ
- URL: https://vietnamjournal.ru/0044-457X/article/view/676639
- DOI: https://doi.org/10.31857/S0044457X24100136
- EDN: https://elibrary.ru/JHSIOG
- ID: 676639
Cite item
Abstract
Hollow aluminosilicate microspheres (cenospheres) of stabilized composition (glass phase – 95.4 wt. %; (SiO2/Al2O3)glass – 3.1) isolated from fly ashes from coal combustion were used to prepare composite sorbents containing a sorption-active component based on zirconosilicates of framework structure. The synthesis products were characterized by XRD, SEM-EDS and low-temperature nitrogen adsorption methods, and their sorption properties towards Cs+ were studied. Zirconosilicate material demonstrates the high distribution coefficient in the process of Cs+ sorption from aqueous solutions (~103–104 ml/g) and stability of sorption capacity as a result of decationation. The possibility of application of SPS-synthesis technology to create high-density mineral-like ceramics for cesium immobilization based on the zirconosilicate sorbent has been investigated. The results of dilatometry, structure and porosity analyses were obtained for ceramics sintered at different temperatures (800–1000°C).
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About the authors
T. A. Vereshchagina
Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences; Siberian Federal University
Email: shichalin_oo@dvfu.ru
Russian Federation, Krasnoyarsk, 660036; Krasnoyarsk, 660041
E. A. Kutikhina
Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences
Email: shichalin_oo@dvfu.ru
Russian Federation, Krasnoyarsk, 660036
O. V. Buyko
Siberian Federal University
Email: shichalin_oo@dvfu.ru
Russian Federation, Krasnoyarsk, 660041
A. A. Belov
Far Eastern Federal University
Email: shichalin_oo@dvfu.ru
Russian Federation, Russky Island, Vladivostok, 690922
O. O. Shichalin
Far Eastern Federal University; Sakhalin State University
Author for correspondence.
Email: shichalin_oo@dvfu.ru
Russian Federation, Russky Island, Vladivostok, 690922; Yuzhno-Sakhalinsk, 693000
A. G. Anshits
Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences
Email: shichalin_oo@dvfu.ru
Russian Federation, Krasnoyarsk, 660036
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