Radiological characteristics and investigation of the radioactive equilibrium in the ashes produced in lignite-fired power plants

Journal of Environmental Radioactivity
D J KarangelosS E Simopoulos

Abstract

Coal- and lignite-fired power plants produce significant amounts of ashes, which are quite often being used as additives in cement and other building materials. In many cases, coal and lignite present high concentrations of naturally occurring radionuclides, such as 238U, 226Ra, 210Pb, 232Th and 40K. During the combustion process, the produced ashes are enriched in the above radionuclides. The different enrichment of the various radionuclides within a radioactive series, such as that of 238U, results in the disturbance of radioactive secular equilibrium. An extensive research project for the determination of the natural radioactivity of lignite and ashes from Greek lignite-fired power plants is in progress in the Nuclear Engineering Department of the National Technical University of Athens (NED-NTUA) since 1983. This paper presents detailed results for the natural radioactivity, the secular radioactive equilibrium disturbance and the radon exhalation rate of the fly-ash collected at the different stages along the emission control system of a lignite-fired power plant as well as of the bottom-ash. From the results obtained so far, it may be concluded that 226Ra radioactivity of fly-ash in some cases exceeds 1 kBq kg(-1), which i...Continue Reading

References

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Citations

Apr 17, 2013·Environmental Science and Pollution Research International·Hany El-GamalHassanien M Hassanien
Jul 31, 2013·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·Y M AminD A Bradley
Jul 19, 2012·Radiation Protection Dosimetry·Elena Charro, Víctor Peña
Mar 8, 2014·Journal of Environmental Radioactivity·M S Al-MasriY Al-Khatib
May 18, 2013·Journal of Environmental Radioactivity·Elena CharroVíctor Peña
Dec 19, 2012·Journal of Environmental Radioactivity·Zs SzabóO Csorba
Mar 21, 2012·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·Lisa KaramÜlkü Yücel
Oct 29, 2011·Journal of Environmental Radioactivity·M S Al-Masri, Kh Haddad
Sep 1, 2009·Journal of Hazardous Materials·V JobbágyT Kovács
Sep 29, 2009·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·J S PaschalidesN P Petropoulos
Sep 4, 2015·Environmental Science & Technology·Nancy E LauerAvner Vengosh
Jul 2, 2005·Journal of Environmental Radioactivity·Th ZeevaertH Vanmarcke
Jun 22, 2015·Journal of Environmental Radioactivity·Zoltán SasTibor Kovács
Sep 19, 2014·Journal of Environmental Radioactivity·F HasaniF Cfarku
Apr 30, 2016·Environmental Science and Pollution Research International·Hesham MohammedDoaa Zaky
Jun 12, 2016·Environmental Science and Pollution Research International·Asnor Azrin Sabuti, Che Abd Rahim Mohamed
Jun 14, 2016·Environment International·Magdalena Długosz-Lisiecka
Apr 15, 2017·Journal of Environmental Radioactivity·Bogusław Michalik
Apr 22, 2017·Environmental Research·Geir BjørklundJan Aaseth
Dec 31, 2016·Journal of Environmental Radioactivity·Bogusław Michalik
Aug 5, 2017·Environmental Science and Pollution Research International·Fotini Noli, Panagiotis Tsamos
Oct 29, 2010·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Filiz Gür, Günseli Yaprak

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