Safe trapping of cesium into pollucite structure by hot-pressing method

Omerašević, Mia; Matović, Ljiljana; Ružić, Jovana; Golubović, Željko; Jovanović, Uroš D.; Mentus, Slavko V.; Dondur, Vera

doi:10.1016/j.jnucmat.2016.03.006

Samo za registrovane korisnike

2016

Autori

Omerašević, Mia

Matović, Ljiljana

Ružić, Jovana

Golubović, Željko
Jovanović, Uroš D.

Mentus, Slavko V.

Dondur, Vera

Članak u časopisu (Objavljena verzija)

Metapodaci

Prikaz svih podataka o dokumentu

Apstrakt

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...

Ključne reči:

Cs disposal / Ion exchange / LTA zeolite / Hot pressing / Pollucite / Leaching tests

Izvor:
Journal of Nuclear Materials, 2016, 474, 35-44

Izdavač:

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

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TY  - 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 . .