Partitioning behavior of natural radionuclides during combustion of coal in thermal power plants
| Autor: | R.C. Bhangare, P.Y. Ajmal, Gauri Girish Pandit, M. Tiwari, Sanjay Kumar Sahu |
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| Rok vydání: | 2017 |
| Předmět: |
Radionuclide
Naturally occurring radioactive material 010504 meteorology & atmospheric sciences Waste management business.industry Thermal power station 010501 environmental sciences Management Monitoring Policy and Law Combustion 01 natural sciences Fly ash Bottom ash Coal Nuclide business Waste Management and Disposal Geology 0105 earth and related environmental sciences |
| Zdroj: | Environmental Forensics. 18:36-43 |
| ISSN: | 1527-5930 1527-5922 |
| DOI: | 10.1080/15275922.2016.1230910 |
| Popis: | Coal-fired power generation produces huge amounts of fly ash and bottom ash of different properties. Coal contains many naturally occurring radionuclides, which on burning are enriched in the ashes; their discharge to the environment may cause significant exposure of the public to this technologically enhanced naturally occurring radioactive material. Most of these nuclides tend to become particle bound and hence are adsorbed on the ash particles. It is thus important to assess the behavior of radionuclides under combustion in the particle phase. To study the behavior of radionuclides in the particle phase, i.e., in combusted coal ashes, radioactivity measurement of coal and ash samples from different power plants was carried out using alpha and γ-ray spectrometry. The activity of 210Po in fly ash ranged from 12.6 to 91.3 Bq kg−1, while the range of activity concentrations of 238U, 226Ra, 232Th, 40K in fly ash were 56.1–133, 44.3–119, 9.3–144, and 34.5–221 Bq kg−1, respectively. Partitioning behav... |
| Databáze: | OpenAIRE |
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