Natural radioactivity analysis and radiological impact assessment from a coal power plant
Background: Through combustion, a coal-fired power plant produces by-products, such as fly ash and bottom ash, which contain significant concentrations of radionuclides that cause environmental contamination, leading to health problems. Materials and Methods: This study investigated the specific act...
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my.uniten.dspace-339502024-10-14T11:17:30Z Natural radioactivity analysis and radiological impact assessment from a coal power plant Mohamed H. Pauzi A.M. Ahmad N. Karim N.A. Wazir M.N.U.I. Zaiul Bahri C.N.A.C. Idris M.I. 59095089800 58876271500 57213609745 57216946378 58875012500 58875012600 56785419200 bottom ash Coal fly ash K-40 thorium-232 uranium-238 germanium naturally occurring radioactive material potassium 40 radioactive material radioisotope thorium 232 unclassified drug uranium 238 absorbed dose rate annual effective dose equivalent Article bottom ash cancer risk coal-fired power plant excess lifetime cancer risk fly ash gamma spectrometry human natural radioactivity radiation dose radiation hazard radioactivity radiology risk factor sampling X ray diffraction Background: Through combustion, a coal-fired power plant produces by-products, such as fly ash and bottom ash, which contain significant concentrations of radionuclides that cause environmental contamination, leading to health problems. Materials and Methods: This study investigated the specific activity and radiological impacts of naturally occurring radioactive materials (NORMs) in the coal, fly ash, and bottom ash at a coal-fired power plant. Samples were collected from a coal-fired power plant in Malaysia. Results: Gamma spectrometry was used to determine the specific concentrations of NORMs, namely 40K, 232Th, 238U, in each sample. The radioactivity ranges for 238U, 232Th, and 40K in the soil were 22.7-150.7 Bq/kg, 20.7- 153.6 Bq/kg, and 68.6-1594.4 Bq/kg, respectively. The coal, fly, and bottom ash samples contained 67.54-189.18 Bq/kg of 238U, 50.2-134.57 Bq/kg of 232Th, and 327.54-1114.40 Bq/kg of 40K. The radium equivalent activities (Raeq) in the samples were 164.55, 467.42, and 429.09 Bq/kg, respectively. Meanwhile, the absorbed dose rate (ADR) in the air ranged from 76.04 to 217.44 nGy/h. Internal and external hazards ranged from 0.44 to 1.26 and 0.63 to 1.77, respectively. The annual gonadal dose equivalent (AGDE) value fluctuated between 521.28 and 1,496.99 ?Sv. Conclusion: The excess lifetime cancer risk (ELCR) oscillated from 1.30�10-3 to 3.75�10-3 indoors and 0.32�10-3 to 0.95�10-3 outdoors. � 2023 Novin Medical Radiation Institute. All rights reserved. Final 2024-10-14T03:17:30Z 2024-10-14T03:17:30Z 2023 Article 10.52547/ijrr.21.4.27 2-s2.0-85184566675 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85184566675&doi=10.52547%2fijrr.21.4.27&partnerID=40&md5=f2af8eaf0436c548584fec9d3df0569d https://irepository.uniten.edu.my/handle/123456789/33950 21 4 797 804 Novin Medical Radiation Institute Scopus |
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bottom ash Coal fly ash K-40 thorium-232 uranium-238 germanium naturally occurring radioactive material potassium 40 radioactive material radioisotope thorium 232 unclassified drug uranium 238 absorbed dose rate annual effective dose equivalent Article bottom ash cancer risk coal-fired power plant excess lifetime cancer risk fly ash gamma spectrometry human natural radioactivity radiation dose radiation hazard radioactivity radiology risk factor sampling X ray diffraction |
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bottom ash Coal fly ash K-40 thorium-232 uranium-238 germanium naturally occurring radioactive material potassium 40 radioactive material radioisotope thorium 232 unclassified drug uranium 238 absorbed dose rate annual effective dose equivalent Article bottom ash cancer risk coal-fired power plant excess lifetime cancer risk fly ash gamma spectrometry human natural radioactivity radiation dose radiation hazard radioactivity radiology risk factor sampling X ray diffraction Mohamed H. Pauzi A.M. Ahmad N. Karim N.A. Wazir M.N.U.I. Zaiul Bahri C.N.A.C. Idris M.I. Natural radioactivity analysis and radiological impact assessment from a coal power plant |
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Background: Through combustion, a coal-fired power plant produces by-products, such as fly ash and bottom ash, which contain significant concentrations of radionuclides that cause environmental contamination, leading to health problems. Materials and Methods: This study investigated the specific activity and radiological impacts of naturally occurring radioactive materials (NORMs) in the coal, fly ash, and bottom ash at a coal-fired power plant. Samples were collected from a coal-fired power plant in Malaysia. Results: Gamma spectrometry was used to determine the specific concentrations of NORMs, namely 40K, 232Th, 238U, in each sample. The radioactivity ranges for 238U, 232Th, and 40K in the soil were 22.7-150.7 Bq/kg, 20.7- 153.6 Bq/kg, and 68.6-1594.4 Bq/kg, respectively. The coal, fly, and bottom ash samples contained 67.54-189.18 Bq/kg of 238U, 50.2-134.57 Bq/kg of 232Th, and 327.54-1114.40 Bq/kg of 40K. The radium equivalent activities (Raeq) in the samples were 164.55, 467.42, and 429.09 Bq/kg, respectively. Meanwhile, the absorbed dose rate (ADR) in the air ranged from 76.04 to 217.44 nGy/h. Internal and external hazards ranged from 0.44 to 1.26 and 0.63 to 1.77, respectively. The annual gonadal dose equivalent (AGDE) value fluctuated between 521.28 and 1,496.99 ?Sv. Conclusion: The excess lifetime cancer risk (ELCR) oscillated from 1.30�10-3 to 3.75�10-3 indoors and 0.32�10-3 to 0.95�10-3 outdoors. � 2023 Novin Medical Radiation Institute. All rights reserved. |
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59095089800 |
author_facet |
59095089800 Mohamed H. Pauzi A.M. Ahmad N. Karim N.A. Wazir M.N.U.I. Zaiul Bahri C.N.A.C. Idris M.I. |
format |
Article |
author |
Mohamed H. Pauzi A.M. Ahmad N. Karim N.A. Wazir M.N.U.I. Zaiul Bahri C.N.A.C. Idris M.I. |
author_sort |
Mohamed H. |
title |
Natural radioactivity analysis and radiological impact assessment from a coal power plant |
title_short |
Natural radioactivity analysis and radiological impact assessment from a coal power plant |
title_full |
Natural radioactivity analysis and radiological impact assessment from a coal power plant |
title_fullStr |
Natural radioactivity analysis and radiological impact assessment from a coal power plant |
title_full_unstemmed |
Natural radioactivity analysis and radiological impact assessment from a coal power plant |
title_sort |
natural radioactivity analysis and radiological impact assessment from a coal power plant |
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Novin Medical Radiation Institute |
publishDate |
2024 |
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1814061159130595328 |
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13.214268 |