Combustion wastes from thermal power stations and household stoves: A comparison of properties, mineralogical and chemical composition, and element mobilization by water and fertilizers
| Autor: | Anna Potysz, Łukasz Uzarowicz, Artur Pędziwiatr |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Ammonium sulfate
020209 energy Thermal power station Coal combustion products 02 engineering and technology 010501 environmental sciences medicine.disease_cause Combustion Coal Ash 01 natural sciences chemistry.chemical_compound 0202 electrical engineering electronic engineering information engineering medicine Leaching (agriculture) Fertilizers Waste Management and Disposal Chemical composition 0105 earth and related environmental sciences Waste management Water Wood Soot Coal chemistry Stove Environmental science |
| Zdroj: | Waste Management. 131:136-146 |
| ISSN: | 0956-053X |
| Popis: | Wood and coal combustion generate wastes, which may negatively influence the environment. However, studies concerning coal combustion products serving as soil additives are currently in progress. Hence, this study was conducted to compare properties (mineralogy, metallic element content, and rare earth element content) of combustion wastes of different genesis (ash and soot after wood and coal combustion in households, ash from thermal power stations) and to assess possible risk posed to the soil environment when used as soil additive. This study demonstrated the diversity of chemical and mineralogical features of ashes of household genesis originating from thermal power stations. Ash from household stoves showed a higher concentration of metallic elements (i.e., Zn) compared to those originating from thermal power stations. Antimony (Sb) content in household ash can serve as an indicator of plastic (polyethylene) combustion, which is legally prohibited. Leaching tests using water and common mineral fertilizers showed that ammonium sulfate mobilizes metallic elements (Cu, Zn, Pb) more significantly than potassium nitrate or deionized water. The leaching of metallic elements from household stove’s ash certainly excludes the possibility of applying the ash as a soil additive even when the ash contains a source of beneficial elements for plants (i.e., Ca). |
| Databáze: | OpenAIRE |
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