Safe trapping of cesium into pollucite structure by hot-pressing method
Samo za registrovane korisnike
2016
Autori
Omerašević, MiaMatović, Ljiljana
Ružić, Jovana
Golubović, Željko
Jovanović, Uroš D.
Mentus, Slavko V.
Dondur, Vera
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
A simple one-step method with direct thermal conversion at lower temperatures for preparing a stabile Cs-aluminsilicate phase, known as pollucite, is presented. Cs-exchanged form of Na, Ca-LTA type of zeolite (Cs-LTA) was pressureless sintered and hot pressed at certain temperatures in order to obtain pollucite. XRD and FTIR analysis were used to study structural changes of Cs-LTA before and after thermal treatments. Pressureless sintered sample recrystallized into pollucite phase after heat treatment at 1000 degrees C (3 h) (PLS1000) and hot pressed sample at 750 degrees C (3 h) using pressure of 35 MPa (HP750), indicating reduced temperature of 250 degrees. SEM micrographs confirmed that HP750 has higher density than PLS1000 which leads to higher value of compressive strength. The HP750 showed better resistance to Cs leaching than the PLS1000. Base on these results one can conclude that hot pressing is the promising method for the permanent disposal of Cs radionuclides. (C) 2016 Else...vier B.V. All rights reserved.
Ključne reči:
Cs disposal / Ion exchange / LTA zeolite / Hot pressing / Pollucite / Leaching testsIzvor:
Journal of Nuclear Materials, 2016, 474, 35-44Izdavač:
- Elsevier
Finansiranje / projekti:
- Sinteza, procesiranje i karakterizacija nanostrukturnih materijala za primenu u oblasti energije, mehaničkog inženjerstva, zaštite životne stredine i biomedicine (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45012)
- Uticaj nano i mikrostrukturnih konstituenata na sintezu i karakteristike savremenih kompozitnih materijala sa metalnom osnovom (RS-MESTD-Basic Research (BR or ON)-172005)
DOI: 10.1016/j.jnucmat.2016.03.006
ISSN: 0022-3115; 1873-4820
WoS: 000374870100005
Scopus: 2-s2.0-84961226108
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Omerašević, Mia AU - Matović, Ljiljana AU - Ružić, Jovana AU - Golubović, Željko AU - Jovanović, Uroš D. AU - Mentus, Slavko V. AU - Dondur, Vera PY - 2016 UR - https://vinar.vin.bg.ac.rs/handle/123456789/1038 AB - A simple one-step method with direct thermal conversion at lower temperatures for preparing a stabile Cs-aluminsilicate phase, known as pollucite, is presented. Cs-exchanged form of Na, Ca-LTA type of zeolite (Cs-LTA) was pressureless sintered and hot pressed at certain temperatures in order to obtain pollucite. XRD and FTIR analysis were used to study structural changes of Cs-LTA before and after thermal treatments. Pressureless sintered sample recrystallized into pollucite phase after heat treatment at 1000 degrees C (3 h) (PLS1000) and hot pressed sample at 750 degrees C (3 h) using pressure of 35 MPa (HP750), indicating reduced temperature of 250 degrees. SEM micrographs confirmed that HP750 has higher density than PLS1000 which leads to higher value of compressive strength. The HP750 showed better resistance to Cs leaching than the PLS1000. Base on these results one can conclude that hot pressing is the promising method for the permanent disposal of Cs radionuclides. (C) 2016 Elsevier B.V. All rights reserved. PB - Elsevier T2 - Journal of Nuclear Materials T1 - Safe trapping of cesium into pollucite structure by hot-pressing method VL - 474 SP - 35 EP - 44 DO - 10.1016/j.jnucmat.2016.03.006 ER -
@article{ author = "Omerašević, Mia and Matović, Ljiljana and Ružić, Jovana and Golubović, Željko and Jovanović, Uroš D. and Mentus, Slavko V. and Dondur, Vera", year = "2016", abstract = "A simple one-step method with direct thermal conversion at lower temperatures for preparing a stabile Cs-aluminsilicate phase, known as pollucite, is presented. Cs-exchanged form of Na, Ca-LTA type of zeolite (Cs-LTA) was pressureless sintered and hot pressed at certain temperatures in order to obtain pollucite. XRD and FTIR analysis were used to study structural changes of Cs-LTA before and after thermal treatments. Pressureless sintered sample recrystallized into pollucite phase after heat treatment at 1000 degrees C (3 h) (PLS1000) and hot pressed sample at 750 degrees C (3 h) using pressure of 35 MPa (HP750), indicating reduced temperature of 250 degrees. SEM micrographs confirmed that HP750 has higher density than PLS1000 which leads to higher value of compressive strength. The HP750 showed better resistance to Cs leaching than the PLS1000. Base on these results one can conclude that hot pressing is the promising method for the permanent disposal of Cs radionuclides. (C) 2016 Elsevier B.V. All rights reserved.", publisher = "Elsevier", journal = "Journal of Nuclear Materials", title = "Safe trapping of cesium into pollucite structure by hot-pressing method", volume = "474", pages = "35-44", doi = "10.1016/j.jnucmat.2016.03.006" }
Omerašević, M., Matović, L., Ružić, J., Golubović, Ž., Jovanović, U. D., Mentus, S. V.,& Dondur, V.. (2016). Safe trapping of cesium into pollucite structure by hot-pressing method. in Journal of Nuclear Materials Elsevier., 474, 35-44. https://doi.org/10.1016/j.jnucmat.2016.03.006
Omerašević M, Matović L, Ružić J, Golubović Ž, Jovanović UD, Mentus SV, Dondur V. Safe trapping of cesium into pollucite structure by hot-pressing method. in Journal of Nuclear Materials. 2016;474:35-44. doi:10.1016/j.jnucmat.2016.03.006 .
Omerašević, Mia, Matović, Ljiljana, Ružić, Jovana, Golubović, Željko, Jovanović, Uroš D., Mentus, Slavko V., Dondur, Vera, "Safe trapping of cesium into pollucite structure by hot-pressing method" in Journal of Nuclear Materials, 474 (2016):35-44, https://doi.org/10.1016/j.jnucmat.2016.03.006 . .