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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
Study of the content of risk elements in power plant ash
 Vlčková, Renáta ; Doležalová Weissmannová, Helena (referee) ; Komendová, Renata (advisor)
This thesis deals with the study of the content of the risk elements Hg, Cr, Pb and Cd in samples provided by the Thermal Power Plant. Samples of lignite, biomass, fly ash and bottom ash were collected monthly over a period of one year. In addition to this set of samples, river water and fly ash pond water were sampled monthly. A total of 72 samples were analysed by atomic absorption spectrometry (AMA 254 and ETAAS). The concentrations of the elements of concern in the lignite and biomass samples decrease in the order Cr > Pb > Hg > Cd and in the fly ash and bottom ash samples decrease in the order Cr > Pb > Cd > Hg. Overall, it was assessed that the concentrations of the risk elements after co-firing of lignite and biomass were mainly transferred to fly ash and less to bottom ash. It was found that the combustion of higher amounts of biomass decreased the Hg, Cr and Pb contents in both fly ash and bottom ash. The water samples according to the determined parameters were classified as unpolluted water.
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