Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering
Само за регистроване кориснике
2020
Аутори
Isek, JosipKaluđerović, Lazar M.
Vuković, Nikola
Milošević, Maja
Vukasinović, Ivana
Tomić, Zorica
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Two samples collected from the phosphogypsum deposits of the chemical products industry Elixir Prahovo (Serbia) were subjected to a recrystallization experiment performed over several repeated cycles. In these tests, phosphogypsum was separated into recrystallized (purified) gypsum, insoluble residue and supernatant. Both raw phosphogypsum and recrystallized gypsum were examined using inductively coupled plasma optical emission spectrometry, X-ray diffraction and scanning electron microscopy with energy-dispersive spectrometry. The activity concentrations of (238)u, (235)u, Ra-226, Pb-210,Th- 232 and 40 K were investigated using gamma-ray spectrometry. Based on the activity concentration results, a number of radiometric parameters were calculated for the original and recrystallized phosphogypsum (i.e. radium equivalent activity, y indices for construction materials, a index and external and internal hazard indices). Raw phosphogypsum samples showed greater mean activity concentration l...evels of U-238 and Ra-226 than the international recommended limits, while the recrystallized gypsum demonstrated notably lower activity concentrations for these two isotopes. The activity concentration of Ra-226 in recrystallized gypsum is similar to 6 times lower than in raw phosphogypsum. Therefore, recrystallized gypsum does not present a radiation hazard when used as a building material, while raw phosphogypsum meets the requirements only for road construction materials.
Кључне речи:
recrystallization / radionuclides / phosphogypsum / gamma-spectrometry / chukhrovite / brushiteИзвор:
Clay Minerals, 2020, 55, 1, 63-70Издавач:
- Mineralogical Soc, Twickenham
Финансирање / пројекти:
- Минерали Србије: састав, структура, генеза, примена и допринос одржању животне средине (RS-MESTD-Basic Research (BR or ON)-176010)
- Истраживање климатских промена и њиховог утицаја на животну средину - праћење утицаја, адаптација и ублажавање (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-43007)
DOI: 10.1180/clm.2020.11
ISSN: 0009-8558
WoS: 000544148900008
Scopus: 2-s2.0-85087612409
Институција/група
Institut za tehnologiju nuklearnih i drugih mineralnih sirovinaTY - JOUR AU - Isek, Josip AU - Kaluđerović, Lazar M. AU - Vuković, Nikola AU - Milošević, Maja AU - Vukasinović, Ivana AU - Tomić, Zorica PY - 2020 UR - https://ritnms.itnms.ac.rs/handle/123456789/547 AB - Two samples collected from the phosphogypsum deposits of the chemical products industry Elixir Prahovo (Serbia) were subjected to a recrystallization experiment performed over several repeated cycles. In these tests, phosphogypsum was separated into recrystallized (purified) gypsum, insoluble residue and supernatant. Both raw phosphogypsum and recrystallized gypsum were examined using inductively coupled plasma optical emission spectrometry, X-ray diffraction and scanning electron microscopy with energy-dispersive spectrometry. The activity concentrations of (238)u, (235)u, Ra-226, Pb-210,Th- 232 and 40 K were investigated using gamma-ray spectrometry. Based on the activity concentration results, a number of radiometric parameters were calculated for the original and recrystallized phosphogypsum (i.e. radium equivalent activity, y indices for construction materials, a index and external and internal hazard indices). Raw phosphogypsum samples showed greater mean activity concentration levels of U-238 and Ra-226 than the international recommended limits, while the recrystallized gypsum demonstrated notably lower activity concentrations for these two isotopes. The activity concentration of Ra-226 in recrystallized gypsum is similar to 6 times lower than in raw phosphogypsum. Therefore, recrystallized gypsum does not present a radiation hazard when used as a building material, while raw phosphogypsum meets the requirements only for road construction materials. PB - Mineralogical Soc, Twickenham T2 - Clay Minerals T1 - Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering EP - 70 IS - 1 SP - 63 VL - 55 DO - 10.1180/clm.2020.11 UR - conv_883 ER -
@article{ author = "Isek, Josip and Kaluđerović, Lazar M. and Vuković, Nikola and Milošević, Maja and Vukasinović, Ivana and Tomić, Zorica", year = "2020", abstract = "Two samples collected from the phosphogypsum deposits of the chemical products industry Elixir Prahovo (Serbia) were subjected to a recrystallization experiment performed over several repeated cycles. In these tests, phosphogypsum was separated into recrystallized (purified) gypsum, insoluble residue and supernatant. Both raw phosphogypsum and recrystallized gypsum were examined using inductively coupled plasma optical emission spectrometry, X-ray diffraction and scanning electron microscopy with energy-dispersive spectrometry. The activity concentrations of (238)u, (235)u, Ra-226, Pb-210,Th- 232 and 40 K were investigated using gamma-ray spectrometry. Based on the activity concentration results, a number of radiometric parameters were calculated for the original and recrystallized phosphogypsum (i.e. radium equivalent activity, y indices for construction materials, a index and external and internal hazard indices). Raw phosphogypsum samples showed greater mean activity concentration levels of U-238 and Ra-226 than the international recommended limits, while the recrystallized gypsum demonstrated notably lower activity concentrations for these two isotopes. The activity concentration of Ra-226 in recrystallized gypsum is similar to 6 times lower than in raw phosphogypsum. Therefore, recrystallized gypsum does not present a radiation hazard when used as a building material, while raw phosphogypsum meets the requirements only for road construction materials.", publisher = "Mineralogical Soc, Twickenham", journal = "Clay Minerals", title = "Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering", pages = "70-63", number = "1", volume = "55", doi = "10.1180/clm.2020.11", url = "conv_883" }
Isek, J., Kaluđerović, L. M., Vuković, N., Milošević, M., Vukasinović, I.,& Tomić, Z.. (2020). Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering. in Clay Minerals Mineralogical Soc, Twickenham., 55(1), 63-70. https://doi.org/10.1180/clm.2020.11 conv_883
Isek J, Kaluđerović LM, Vuković N, Milošević M, Vukasinović I, Tomić Z. Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering. in Clay Minerals. 2020;55(1):63-70. doi:10.1180/clm.2020.11 conv_883 .
Isek, Josip, Kaluđerović, Lazar M., Vuković, Nikola, Milošević, Maja, Vukasinović, Ivana, Tomić, Zorica, "Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering" in Clay Minerals, 55, no. 1 (2020):63-70, https://doi.org/10.1180/clm.2020.11 ., conv_883 .