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Preliminary Studies of Slag and Ash from Incinerated Municipal Waste for Prospective Applications

Author

Listed:
  • Katarzyna Godyń

    (Strata Mechanics Research Institute of the Polish Academy of Sciences, Reymonta 27, 30-059 Kraków, Poland)

  • Barbara Dutka

    (Strata Mechanics Research Institute of the Polish Academy of Sciences, Reymonta 27, 30-059 Kraków, Poland)

Abstract

The assessment of the possibility of using incinerated municipal waste, which is classified as non-hazardous, is a priority of the European zero waste strategy. The aim of this work was to identify the properties of slag and ash to develop a simple, targeted way of using post-process waste. The material was analyzed by microscopic methods in terms of composition and internal structure. Gas and water permeability tests were carried out. Slag and ash texture was obtained using densimetric methods. BCR sequential extraction was carried out to assess the impacts of the waste on the water and soil environment. It was shown that individual fractions were characterized by different compositions and pore contents. The increase in the waste layer density resulted in porosity reduction of the slag and post-process ash, which had a significant impact on permeability. The increase in density index from 0.92 to 0.98 resulted in reduction of the filtration coefficient by two orders of magnitude. The obtained results showed that the division into fractions is important for prospective applications of incinerated municipal waste. With very low permeability and negligible leachability of heavy metals, the characteristics of slag and ash predispose them to support the needs of specialized hydrotechnical construction.

Suggested Citation

  • Katarzyna Godyń & Barbara Dutka, 2022. "Preliminary Studies of Slag and Ash from Incinerated Municipal Waste for Prospective Applications," Energies, MDPI, vol. 16(1), pages 1-26, December.
    • Handle: RePEc:gam:jeners:v:16:y:2022:i:1:p:117-:d:1011681
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    References listed on IDEAS

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    1. Katarzyna Godyń & Barbara Dutka & Monika Chuchro & Mariusz Młynarczuk, 2020. "Synergy of Parameters Determining the Optimal Properties of Coal as a Natural Sorbent," Energies, MDPI, vol. 13(8), pages 1-17, April.
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