Trace element release from combustion ash co-disposed with municipal solid waste

Sarmiento, Linda E. Monroy; Clavier, Kyle A.; Townsend, Timothy G.

doi:10.1016/j.chemosphere.2020.126436

Cited by 10 publications

(1 citation statement)

References 30 publications

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“…We are currently witnessing a constant increase in the amount of municipal waste generated as a result of the growing production and consumption in all sectors of the economy [1]. Part of this municipal waste is recycled, part is stored at waste landfills, which comprise waste-type-specific installations, and part is combusted in specialist waste incineration plants, which use high-temperature methods like plasma gasification [2][3][4][5]. Numerous countries in the world operate waste-to-energy facilities, although municipal waste incineration remains a socially controversial practice.…”

Section: Introductionmentioning

confidence: 99%

Ecological Risk Assessment Related to the Presence and Toxicity of Potentially Toxic Elements in Ashes from Household Furnaces

Kicińska

Caba

Serwatka³

2022

IJERPH

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The study material was comprised of 23 samples of ashes generated after the combustion of conventional and alternative fuels combined with selected fractions of municipal waste. The analyses performed involved determining the total concentration of As, Al, Cr, Fe, Ni, and their bioaccessible, ion-exchange, and carbonate-bound fractions. It was found that all of the samples analysed may display an elevated level of susceptibility to the reduction processes, which undoubtedly increases the mobility of trace elements, including the toxic ones. The predominant elements were Al and Fe, whereas considerably lower concentrations were observed for Ni, Cr, and As. The percentage share of the ion-exchange and carbonate-bound fraction ranged from 49% of the total concentration for As to as much as 0.35% in the case of Fe. The calculated Risk Assessment Code index points to a high risk related to the presence of As, medium to low risk related to the presence of Ni and Cr, and low to no risk related to the presence of Fe and Al. The calculated values of the Ecological Risk Index, associated with the combustion of selected municipal waste fractions and low-quality hard coals, combusted individually or in combination with different types of wood, point to a very high ecological risk. This is mainly related to the high concentrations and toxicity of As.

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Section: Introductionmentioning

confidence: 99%