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 . .

TY  - JOUR
AU  - Omerasević, Mia
AU  - Ruzic, Jovana
AU  - Nedic-Vasiljević, Bojana
AU  - Baščarević, Zvezdana
AU  - Bucevac, Dusan
AU  - Orlic, Jovana
AU  - Matović, Ljiljana
PY  - 2017
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1047
AB  - Dense CsAlSi5O12 was successfully obtained by hot pressing of Cs-exchanged clinoptilolite at 900 degrees C. Simultaneous application of high temperature and mechanical pressure allowed formation of CsAlSi5O12 at temperature considerably lower than 1150 degrees C which was the lowest reported temperature of CsAlSi5O12 formation in pressureless sintered Cs-exchanged clinoptilolite. CsAlSi5O12 formation was preceded by complete amorphisation of Cs-exchanged clinoptilolite in temperature range between 700 and 900 degrees C. Bearing in mind that clinoptilolite possesses high affinity for Cs cation it is believed that hot pressing of Cs-exchanged clinoptilolite might be an efficient way to immobilize radioactive Cs by its incorporation into crystal lattice of stable CsAlSi5O12. The samples sintered at 950 degrees C had relative density about 84% of theoretical density and open porosity of only 6% which is expected to result in low Cs leaching rate.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Transformation of Cs-exchanged clinoptilolite to CsAlSi5O12 by hot-pressing
EP  - 13504
IS  - 16
SP  - 13500
VL  - 43
DO  - 10.1016/j.ceramint.2017.07.055
ER  - 

@article{
author = "Omerasević, Mia and Ruzic, Jovana and Nedic-Vasiljević, Bojana and Baščarević, Zvezdana and Bucevac, Dusan and Orlic, Jovana and Matović, Ljiljana",
year = "2017",
abstract = "Dense CsAlSi5O12 was successfully obtained by hot pressing of Cs-exchanged clinoptilolite at 900 degrees C. Simultaneous application of high temperature and mechanical pressure allowed formation of CsAlSi5O12 at temperature considerably lower than 1150 degrees C which was the lowest reported temperature of CsAlSi5O12 formation in pressureless sintered Cs-exchanged clinoptilolite. CsAlSi5O12 formation was preceded by complete amorphisation of Cs-exchanged clinoptilolite in temperature range between 700 and 900 degrees C. Bearing in mind that clinoptilolite possesses high affinity for Cs cation it is believed that hot pressing of Cs-exchanged clinoptilolite might be an efficient way to immobilize radioactive Cs by its incorporation into crystal lattice of stable CsAlSi5O12. The samples sintered at 950 degrees C had relative density about 84% of theoretical density and open porosity of only 6% which is expected to result in low Cs leaching rate.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Transformation of Cs-exchanged clinoptilolite to CsAlSi5O12 by hot-pressing",
pages = "13504-13500",
number = "16",
volume = "43",
doi = "10.1016/j.ceramint.2017.07.055"
}

Omerasević, M., Ruzic, J., Nedic-Vasiljević, B., Baščarević, Z., Bucevac, D., Orlic, J.,& Matović, L.. (2017). Transformation of Cs-exchanged clinoptilolite to CsAlSi5O12 by hot-pressing. in Ceramics International
Elsevier Sci Ltd, Oxford., 43(16), 13500-13504.
https://doi.org/10.1016/j.ceramint.2017.07.055

Omerasević M, Ruzic J, Nedic-Vasiljević B, Baščarević Z, Bucevac D, Orlic J, Matović L. Transformation of Cs-exchanged clinoptilolite to CsAlSi5O12 by hot-pressing. in Ceramics International. 2017;43(16):13500-13504.
doi:10.1016/j.ceramint.2017.07.055 .

Omerasević, Mia, Ruzic, Jovana, Nedic-Vasiljević, Bojana, Baščarević, Zvezdana, Bucevac, Dusan, Orlic, Jovana, Matović, Ljiljana, "Transformation of Cs-exchanged clinoptilolite to CsAlSi5O12 by hot-pressing" in Ceramics International, 43, no. 16 (2017):13500-13504,
https://doi.org/10.1016/j.ceramint.2017.07.055 . .