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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 Cover

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

Nukleonika
Volume 69 (2024): Issue 2 (June 2024)
By: Sławomir Neffe,  Joanna Lemańska,  Bartłomiej Fliszkiewicz and  Sławomir Jednorog  
Open Access
|Jun 2024

Figures & Tables

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

ElementAverage content in mass percentage
C, carbon1.86
O, oxygen33.99
Na, sodium0.40
Mg, magnesium1.60
Al, aluminum13.15
Si, silicon13.36
P, phosphorus9.18
S, sulfur0.92
K, potassium1.33
Ca, calcium13.93
Ti, titanium0.70
Mn, manganese0.25
Fe, iron8.13
Cu, copper0.43
Zn, zinc0.75

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

RadionuclideMean specific activity ± SD (Bq/kg)
137Cs5 ± 2
7Be479 ± 98
40K417 ± 442
Uranium–radium series
234mPa149 881 ± 97 150
210Bi2 762 ± 2 310
234Th446 ± 395
214Bi4 670 ± 2 762
210Pb286 ± 228
226Ra41 ± 30
Thorium series
228Ac382 ± 239
212Bi960 ± 566
212Pb92 ± 44
208Tl15 ± 5
Uranium–actinium series
235U5 ± 3
DOI: https://doi.org/10.2478/nuka-2024-0015 | Journal eISSN: 1508-5791 | Journal ISSN: 0029-5922
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Language: English
Page range: 107 - 111
Submitted on: Oct 3, 2023
|
Accepted on: Apr 30, 2024
|
Published on: Jun 25, 2024
Published by: Institute of Nuclear Chemistry and Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
Fly ashes,
Radioactivity,
Sewage,
Sludge combustion
Related subjects:
Chemistry,
Nuclear chemistry,
Physics,
Astronomy and astrophysics,
Physics, other

© 2024 Sławomir Neffe, Joanna Lemańska, Bartłomiej Fliszkiewicz, Sławomir Jednorog, published by Institute of Nuclear Chemistry and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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