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The impact of additives on the retention of heavy metals in the bottom ash during RDF incineration
Silesian University of Technology, Institute of Power Engineering and Turbomachinery.ORCID iD: 0000-0003-2088-5793
Silesian University of Technology, Institute of Power Engineering and Turbomachinery.
Silesian University of Technology, Department of Applied Geology.
Silesian University of Technology, Institute of Engineering Materials and Biomaterials.ORCID iD: 0000-0001-5188-1950
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2019 (English)In: Energy, ISSN 0360-5442, E-ISSN 1873-6785, Vol. 183, p. 854-868Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
Elsevier, 2019. Vol. 183, p. 854-868
Keywords [en]
kaolinite, halloysite, ammonium sulphate, ICP, SEM-EDS, TCLP
National Category
Other Environmental Engineering
Research subject
Energy Technology
Identifiers
URN: urn:nbn:se:kth:diva-255660DOI: 10.1016/j.energy.2019.06.162ISI: 000483005400072Scopus ID: 2-s2.0-85068407064OAI: oai:DiVA.org:kth-255660DiVA, id: diva2:1340583
Note

QC 20190828

Available from: 2019-08-06 Created: 2019-08-06 Last updated: 2019-09-26Bibliographically approved

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Jagodzińska, KatarzynaGołombek, Klaudiusz
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