Thermal Destruction of Waste and the Impact of the Presence of Cl and S in Waste on the Emissions of Cu, Ni, and Pb and Their Immobilisation in the Ash Residue

Danuta Król, Przemysław Motyl (), Sławomir Poskrobko and Stanisław Łuniewski
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Danuta Król: Faculty of Energy and Environmental Engineering, Silesian University of Technology, 14-100 Gliwice, Poland
Przemysław Motyl: Faculty of Mechanical Engineering, Radom University, 26-600 Radom, Poland
Sławomir Poskrobko: Faculty of Civil Engineering and Environmental Sciences, Białystok University of Technology, 15-351 Białystok, Poland
Stanisław Łuniewski: Faculty of Economic Science, Eastern European University of Applied Sciences, 15-472 Białystok, Poland

Energies, 2023, vol. 16, issue 22, 1-17

Abstract: This study addresses the pressing environmental problem of the emissions of ecotoxic heavy metals from high-temperature waste combustion processes, including incineration and pyrolysis. Such emissions pose a serious threat to ecosystems and human health. This study investigated the behaviour of the heavy metals Cu, Ni, and Pb during the combustion of various waste materials such as plastic waste, pharmaceutical waste, and pesticide waste. To limit the release of heavy metals into the exhaust gas stream, various additives were used: divanadium pentoxide (V 2 O 5 ), borax (Na 2 B 4 O 7 ), and their mixtures with calcium oxide (CaO). Additionally, this study examined the impact of the content of chlorine heteroatoms (Cl) in burned waste materials on the emission levels of Cu, Ni, and Pb. The findings shed light on the mobility of ecotoxic heavy metals in high-temperature waste incineration processes (1273, 1373 K) and offer insight into strategies to improve their immobilisation in grate residues. At a temperature of 1273 K, V 2 O 5 with CaO reduced Pb emissions by ~65% for plastic waste and by ~40% for pesticide.

Keywords: combustion; emission; heavy metals; waste (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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