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Migration of trace elements and radioisotopes to various fractions of solid wastes generated as a result of the sewage sludge incineration process
Abstract
The research was aimed at providing new knowledge in the field of chemical characteristics of solid waste generated in the process of combustion of sewage sludge in fluidized bed furnaces. The research material consisted of disposed fluidized beds (DFB), sewage sludge ash (SSA) and air pollution control residues (APC) from three Polish installations for the thermal treatment of sewage sludge. Natural radionuclides as well as anthropogenic isotope 137Cs were determined in the tested materials and the migration of a wide spectrum of trace elements to various waste fractions generated in the process of sewage sludge combustion was examined. It was observed that both radioisotopes and most of the trace elements determined accumulate in SSA and DFB, while the APC fraction contains a much smaller amount of them. The exceptions are mercury and selenium, whose volatile compounds migrate to the exhaust gas dedusting system and accumulate in the APC fraction (up to 40 mg/kg and 13 mg/kg, respectively). A potential threat from the 226Ra isotope in SSA is identified in the context of the management of this waste in the production of building materials because the typical activity of 226Ra in SSA collected from areas with very low Ra content in natural environment exceeds 1.5–6 times the activity of this isotope in conventional cement mixtures. When managing SSA and DFB, special attention should be paid to the content of metalloids such as As, B and Se, due to the high content of mobile forms of these elements in the mentioned materials.
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Authors (8)
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Barbara Piotrowska mgr
- Centralne Laboratorium Ochrony Radiologicznej
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Krzysztof Isajenko mgr inż.
- Centralne Laboratorium Ochrony Radiologicznej
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Satoki Okabayashi
- Kwansei Gakuin University
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Koichi Chiba PhD
- Kwansei Gakuin University
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Motohiro Tsuboi PhD
- Kwansei Gakuin University
Cite as
Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.wasman.2024.05.021
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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WASTE MANAGEMENT
no. 183,
pages 245 - 252,
ISSN: 0956-053X - Language:
- English
- Publication year:
- 2024
- Bibliographic description:
- Ronda O., Cieślik B., Piotrowska B., Isajenko K., Okabayashi S., Chiba K., Tsuboi M., Płotka-Wasylka J.: Migration of trace elements and radioisotopes to various fractions of solid wastes generated as a result of the sewage sludge incineration process// WASTE MANAGEMENT -Vol. 183, (2024), s.245-252
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.wasman.2024.05.021
- Sources of funding:
-
- IDUB
- Verified by:
- Gdańsk University of Technology
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