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The impact of additives on the retention of heavy metals in the bottom ash during RDF incineration

Author

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  • Jagodzińska, Katarzyna
  • Mroczek, Kazimierz
  • Nowińska, Katarzyna
  • Gołombek, Klaudiusz
  • Kalisz, Sylwester

Abstract

Up to now, a few studies on the efficiency of heavy metal(-oid)s capture by a sorbent directly mixed with fuel, have been performed. For this reason, the main objective of the study is to determine whether or not such a solution is effective when RDF is incinerated. The paper presents a two-step analysis of the impact of three sorbents (ammonium sulphate, kaolinite and halloysite) in three dosages (2, 4 and 8 wt%) on heavy metal(-oid)s retention in the bottom ash. 12 heavy metal(-oid)s were taken into consideration - As, Cd, Co, Cr, Cu, Hg, Mn, Ni, Pb, Sb, V and Zn. Samples were incinerated in a lab-scale tubular reactor at two temperatures - 900 °C and 1100 °C. The first step of investigation constitutes ICP analysis of heavy metal(-oid)s content in the bottom ash, coupled with SEM/EDS analysis. Afterwards, the second step was to determine the stability of formed additive-heavy metal(-oid)s complexes via leachability tests in neutral and acid environments. The performed research has shown that ammonium sulphate is effective in Cr, Cu and Hg capture, halloysite – in Cd, Co, V and Mn capture, whereas kaolinite – in Pb capture.

Suggested Citation

  • Jagodzińska, Katarzyna & Mroczek, Kazimierz & Nowińska, Katarzyna & Gołombek, Klaudiusz & Kalisz, Sylwester, 2019. "The impact of additives on the retention of heavy metals in the bottom ash during RDF incineration," Energy, Elsevier, vol. 183(C), pages 854-868.
    • Handle: RePEc:eee:energy:v:183:y:2019:i:c:p:854-868
    DOI: 10.1016/j.energy.2019.06.162
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    References listed on IDEAS

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    1. Hernik, Bartłomiej, 2015. "Numerical calculations of the WR-40 boiler with a furnace jet boiler system," Energy, Elsevier, vol. 92(P1), pages 54-66.
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    Cited by:

    1. Mallick, Roni & Vairakannu, Prabu, 2024. "Experimental studies on CO2-thermal plasma gasification of refused derived fuel feedstock for clean syngas production," Energy, Elsevier, vol. 288(C).
    2. Piotr Sakiewicz & Marcin Lutyński & Jakub Sobieraj & Krzysztof Piotrowski & Francesco Miccio & Sylwester Kalisz, 2022. "Adsorption of CO 2 on In Situ Functionalized Straw Burning Ashes—An Innovative, Circular Economy-Based Concept for Limitation of Industrial-Scale Greenhouse Gas Emission," Energies, MDPI, vol. 15(4), pages 1-28, February.
    3. Mlonka-Mędrala, Agata & Dziok, Tadeusz & Magdziarz, Aneta & Nowak, Wojciech, 2021. "Composition and properties of fly ash collected from a multifuel fluidized bed boiler co-firing refuse derived fuel (RDF) and hard coal," Energy, Elsevier, vol. 234(C).

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