The impact of additives on the retention of heavy metals in the bottom ash during RDF incineration
| Autor: | Katarzyna Jagodzińska, Kazimierz Mroczek, Katarzyna Nowińska, Klaudiusz Gołombek, Sylwester Kalisz |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Sorbent
020209 energy 02 engineering and technology engineering.material Halloysite Industrial and Manufacturing Engineering Metal chemistry.chemical_compound 020401 chemical engineering 0202 electrical engineering electronic engineering information engineering Kaolinite Ammonium 0204 chemical engineering Electrical and Electronic Engineering Civil and Structural Engineering Mechanical Engineering Heavy metals Building and Construction Pollution Incineration General Energy chemistry Bottom ash visual_art engineering visual_art.visual_art_medium Nuclear chemistry |
| Zdroj: | Energy. 183:854-868 |
| ISSN: | 0360-5442 |
| DOI: | 10.1016/j.energy.2019.06.162 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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