The study of the content of risk elements in power plant ash

abstrakt

angličtina

This study deals with the determination of the content of the risk elements Hg, Cr, Pb and Cd in the samples provided by Thermal Power Plant X. During the annual monitoring, samples of brown coal, biomass, fly ash, bed ash, water from the tailings pond and river water used for cooling were sampled every month. Atomic absorption spectrometry (AMA 254 and ETAAS) was used for the determination. Concentrations of risk elements in brown coal and biomass samples decrease in the order Cr > Pb > Hg > Cd, and in fly ash and bed ash samples decrease in the order Cr > Pb > Cd > Hg. Overall, it was evaluated that the contents of risk elements after the co-combustion of brown coal and biomass passed mainly into the fly ash and less into the bed ash. It was found that by burning a higher amount of biomass, the content of Hg, Cr and Pb in fly ash and bed ash decreased. The water samples were classified as unpolluted water according to the specified parameters. In general, thermal power plants are still currently a source of pollution, not only in the locality of their operation, but also in terms of long-distance transport of pollutants. Although Thermal Power Plant X complies with the emission limits, its operation is an anthropogenic source of air pollution in the long term.

brown coal; biomass; ash; risk elements; AAS

KOMENDOVÁ, R.; VLČKOVÁ, R.

12. 9. 2024

FCH, VUT v Brně

Brno, ČR

61

61

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https://www.fch.vut.cz/en/chl/conference