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Radiation impact of ashes from the combustion of bottom sediments in a municipal sewage treatment plant, Czajka, located in Warsaw, Poland

Sławomir Neffe

Sławomir Neffe

Military University of TechnologyWarsaw, Poland
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Neffe, Sławomir
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Joanna Lemańska

Joanna Lemańska

Central Laboratory for Radiological ProtectionWarsaw, Poland
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Lemańska, Joanna
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Bartłomiej Fliszkiewicz

Bartłomiej Fliszkiewicz

Military University of TechnologyWarsaw, Poland
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Fliszkiewicz, Bartłomiej
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Sławomir Jednorog

Sławomir Jednorog

Central Laboratory for Radiological ProtectionWarsaw, Poland
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Jednorog, Sławomir
  
25 jun 2024
Radiation impact of ashes from the combustion of bottom sediments in a municipal sewage treatment plant, Czajka, located in Warsaw, Poland's Cover Image
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Categoría del artículo: Original Paper
Publicado en línea: 25 jun 2024
Páginas: 107 - 111
Recibido: 03 oct 2023
Aceptado: 30 abr 2024
DOI: https://doi.org/10.2478/nuka-2024-0015
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© 2024 Sławomir Neffe et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1.

Schematic of the “Czajka” sewage treatment plant located in Warsaw, Poland.
Schematic of the “Czajka” sewage treatment plant located in Warsaw, Poland.

Fig. 2.

Interference of radionuclides FEAPs: 232Th and 234Th, 212Pb and 214Pb, 212Pb and 228Ac based on current results.
Interference of radionuclides FEAPs: 232Th and 234Th, 212Pb and 214Pb, 212Pb and 228Ac based on current results.

Fig. 3.

Interference of 235U and 226Ra FEAPs based on current results.
Interference of 235U and 226Ra FEAPs based on current results.

Fig. 4.

Interference of 40K and 228Ac FEAPs based on current results.
Interference of 40K and 228Ac FEAPs based on current results.

Fig. 5.

The measurement geometries adopted for both series of measurements. Simplified beaker (on the left) and Marinelli beaker. Own drawing based on the Geometry Composer screen.
The measurement geometries adopted for both series of measurements. Simplified beaker (on the left) and Marinelli beaker. Own drawing based on the Geometry Composer screen.

Average content in mass percentage determined by the EDX technique

Element Average content in mass percentage
C, carbon 1.86
O, oxygen 33.99
Na, sodium 0.40
Mg, magnesium 1.60
Al, aluminum 13.15
Si, silicon 13.36
P, phosphorus 9.18
S, sulfur 0.92
K, potassium 1.33
Ca, calcium 13.93
Ti, titanium 0.70
Mn, manganese 0.25
Fe, iron 8.13
Cu, copper 0.43
Zn, zinc 0.75

The mean value of the specific activity and its standard deviation (SD) for radionuclides detected in samples of ashes from the “Czajka” plant

Radionuclide Mean specific activity ± SD (Bq/kg)
137Cs 5 ± 2
7Be 479 ± 98
40K 417 ± 442
Uranium–radium series
234mPa 149 881 ± 97 150
210Bi 2 762 ± 2 310
234Th 446 ± 395
214Bi 4 670 ± 2 762
210Pb 286 ± 228
226Ra 41 ± 30
Thorium series
228Ac 382 ± 239
212Bi 960 ± 566
212Pb 92 ± 44
208Tl 15 ± 5
Uranium–actinium series
235U 5 ± 3
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Inglés
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Temas de la revista:
Química, Química nuclear, Física, Astronomía y astrofísica, Física, otros
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