A promising method for removal of Cs ions from water and their incorporation into stable crystal structure ready for safe and permanent disposal was described. Cs-exchanged X zeolite was hot-pressed at temperature ranging from 800 to 950 degrees C to fabricate dense pollucite ceramics. It was found that the application of external pressure reduced the pollucite formation temperature. The effect of sintering temperature on density, phase composition and mechanical properties was investigated. The highest density of 92.5 %TD and the highest compressive strength of 79 MPa were measured in pollucite hotpressed at 950 degrees C for 3 h. Heterogeneity of samples obtained at 950 degrees C was determined using scanning electron microscopy. The pollucite hot-pressed at 950 degrees C had low linear thermal expansion coefficient of similar to 4.67 x 10(-6) K-1 in the temperature range from 100 to 1000 degrees C.
Keywords:
Zeolite / Thermal expansion / Ion exchange / Hot pressing / Cs disposal
Source:
Nuclear Engineering and Technology, 2020, 52, 1, 115-122
TY - JOUR
AU - Omerasević, Mia
AU - Lukic, Miodrag
AU - Savic-Bisercic, Marjetka
AU - Savić, Andrija
AU - Matović, Ljiljana
AU - Baščarević, Zvezdana
AU - Bucevac, Dusan
PY - 2020
UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/1388
AB - A promising method for removal of Cs ions from water and their incorporation into stable crystal structure ready for safe and permanent disposal was described. Cs-exchanged X zeolite was hot-pressed at temperature ranging from 800 to 950 degrees C to fabricate dense pollucite ceramics. It was found that the application of external pressure reduced the pollucite formation temperature. The effect of sintering temperature on density, phase composition and mechanical properties was investigated. The highest density of 92.5 %TD and the highest compressive strength of 79 MPa were measured in pollucite hotpressed at 950 degrees C for 3 h. Heterogeneity of samples obtained at 950 degrees C was determined using scanning electron microscopy. The pollucite hot-pressed at 950 degrees C had low linear thermal expansion coefficient of similar to 4.67 x 10(-6) K-1 in the temperature range from 100 to 1000 degrees C.
PB - Korean Nuclear Soc, Daejeon
T2 - Nuclear Engineering and Technology
T1 - Permanent disposal of Cs ions in the form of dense pollucite ceramics having low thermal expansion coefficient
EP - 122
IS - 1
SP - 115
VL - 52
DO - 10.1016/j.net.2019.07.001
ER -
@article{
author = "Omerasević, Mia and Lukic, Miodrag and Savic-Bisercic, Marjetka and Savić, Andrija and Matović, Ljiljana and Baščarević, Zvezdana and Bucevac, Dusan",
year = "2020",
abstract = "A promising method for removal of Cs ions from water and their incorporation into stable crystal structure ready for safe and permanent disposal was described. Cs-exchanged X zeolite was hot-pressed at temperature ranging from 800 to 950 degrees C to fabricate dense pollucite ceramics. It was found that the application of external pressure reduced the pollucite formation temperature. The effect of sintering temperature on density, phase composition and mechanical properties was investigated. The highest density of 92.5 %TD and the highest compressive strength of 79 MPa were measured in pollucite hotpressed at 950 degrees C for 3 h. Heterogeneity of samples obtained at 950 degrees C was determined using scanning electron microscopy. The pollucite hot-pressed at 950 degrees C had low linear thermal expansion coefficient of similar to 4.67 x 10(-6) K-1 in the temperature range from 100 to 1000 degrees C.",
publisher = "Korean Nuclear Soc, Daejeon",
journal = "Nuclear Engineering and Technology",
title = "Permanent disposal of Cs ions in the form of dense pollucite ceramics having low thermal expansion coefficient",
pages = "122-115",
number = "1",
volume = "52",
doi = "10.1016/j.net.2019.07.001"
}
Omerasević, M., Lukic, M., Savic-Bisercic, M., Savić, A., Matović, L., Baščarević, Z.,& Bucevac, D.. (2020). Permanent disposal of Cs ions in the form of dense pollucite ceramics having low thermal expansion coefficient. in Nuclear Engineering and Technology
Korean Nuclear Soc, Daejeon., 52(1), 115-122.
https://doi.org/10.1016/j.net.2019.07.001
Omerasević M, Lukic M, Savic-Bisercic M, Savić A, Matović L, Baščarević Z, Bucevac D. Permanent disposal of Cs ions in the form of dense pollucite ceramics having low thermal expansion coefficient. in Nuclear Engineering and Technology. 2020;52(1):115-122.
doi:10.1016/j.net.2019.07.001 .
Omerasević, Mia, Lukic, Miodrag, Savic-Bisercic, Marjetka, Savić, Andrija, Matović, Ljiljana, Baščarević, Zvezdana, Bucevac, Dusan, "Permanent disposal of Cs ions in the form of dense pollucite ceramics having low thermal expansion coefficient" in Nuclear Engineering and Technology, 52, no. 1 (2020):115-122,
https://doi.org/10.1016/j.net.2019.07.001 . .
