Physicochemical and radiological characterization of flue gas desulfuration waste samples from Brazilian coal-fired power plants
Carregando...
Data
Data de publicação
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
Brazilian Journal of Radiation Sciences
Exportar
Resumo
Flue gas desulfurization (FGD) waste is an industrial by-product generated during the flue gas desulfurization
process in coal-fired power plants. This by-product contain trace quantities of naturally occurring radionuclides
and elements such as As, Ba, Co, Cr, Zn. The characteristics of FGD waste are important for its reuse and are
mainly depend on the desulfurization process. In this work, two types of FGD materials collected from three
coal-fired power plants using semi-dry and wet processes were characterized by X-Ray Diffraction (XRD),
Scanning Electron Microscope (SEM), X-ray fluorescence (XFR) and particle size analysis. The radioactive
content of 238U, 232Th, 228Th, 226Ra, 228Ra, 210Pb and 40K and trace elements were also determined using Neutron
activation analysis and Gamma-ray spectrometry. The major constituents for all samples were Ca, Si, S, Al and
Fe. Wet FGD by-product presented also high magnesium content. The wastes contain mainly semi-hydrate
calcium sulfite and calcium sulfate. The particle size of FGD from semi-dry process was lower than that from
the wet process. The average activity concentration of 238U, 232Th, 226Ra, 210Pb, 228Ra, 228Th and 40K varied between were 50-71, 33-42, 28-52, 113-150, 26-33, 33-39, 161-390 Bq kg-1
, respectively. According to the results of
leaching and solubilization tests, FGD samples were classified as non-hazardous and non-inert. The obtained
data are useful for evaluation of possible applications of FGD by-products
Como referenciar
FUNGARO, D.A.; GROSCHE, L.C.; SILVA, P.S.C. Physicochemical and radiological characterization of flue gas desulfuration waste samples from Brazilian coal-fired power plants. Brazilian Journal of Radiation Sciences, v. 11, n. 2, p. 1-18, 2023. DOI: 10.15392/2319-0612.2023.2275. Disponível em: http://repositorio.ipen.br/handle/123456789/34219. Acesso em: 24 Mar 2026.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.