During incineration of municipal solid waste (MSW), various environmentally harmful elements and heavy metals are liberated either into bottom ash, or carried away with the off-gases and subsequently trapped in fly-ash. If these minor but harmful elements are not properly isolated and immobilized, it can lead to secondary environmental pollution to the air, soil and water. The stricter environmental regulations to be implemented in the near future in the Netherlands require a higher immobilization efficiency of the bottom ash treatment. In the present study, MSW incinerator bottom ash was vitrified at higher temperatures and the slag formed and metal recovered were examined. The behaviour of soluble elements that remain in the slag is evaluated by leaching extraction. The thermodynamics of slag and metal formation is discussed. The results obtained can provide a valuable route to treat the ashes from incinerators, and to make recycling and more efficient utilization of the bottom ash possible.
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14th Annual North American Waste-to-Energy Conference
May 1–3, 2006
Tampa, Florida, USA
Conference Sponsors:
- Solid Waste Processing Division
ISBN:
0-7918-4204-5
PROCEEDINGS PAPER
Vitrification of Bottom Ash From AVR MSW Incinerators
Y. Xiao,
Y. Xiao
Delft University of Technology, Delft, The Netherlands
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M. Oorsprong,
M. Oorsprong
Delft University of Technology, Delft, The Netherlands
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Y. Yang,
Y. Yang
Delft University of Technology, Delft, The Netherlands
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J. H. L. Voncken
J. H. L. Voncken
Delft University of Technology, Delft, The Netherlands
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Y. Xiao
Delft University of Technology, Delft, The Netherlands
M. Oorsprong
Delft University of Technology, Delft, The Netherlands
Y. Yang
Delft University of Technology, Delft, The Netherlands
J. H. L. Voncken
Delft University of Technology, Delft, The Netherlands
Paper No:
NAWTEC14-3192, pp. 115-123; 9 pages
Published Online:
October 2, 2008
Citation
Xiao, Y, Oorsprong, M, Yang, Y, & Voncken, JHL. "Vitrification of Bottom Ash From AVR MSW Incinerators." Proceedings of the 14th Annual North American Waste-to-Energy Conference. 14th Annual North American Waste-to-Energy Conference. Tampa, Florida, USA. May 1–3, 2006. pp. 115-123. ASME. https://doi.org/10.1115/NAWTEC14-3192
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