Metal distribution in incineration residues of municipal solid waste (MSW) in Japan

This study aimed to identify distribution of metals and the influential factors on metal concentrations in incineration residues. Bottom ash and fly ash were sampled from 19 stoker and seven fluidized bed incinerators, which were selected to have a variety of furnace capacity, furnace temperature, a...

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Bibliographic Details
Published in:Waste management (Elmsford) 2004, Vol.24 (4), p.381-391
Main Authors: Jung, C.H, Matsuto, T, Tanaka, N, Okada, T
Format: Article
Language:English
Subjects:
Applied sciences
Carbon - chemistry
Coal Ash
Environmental Monitoring
Exact sciences and technology
Incineration
Industrial Waste
Japan
Metals, Heavy - analysis
Particulate Matter
Pollution
Refuse Disposal - methods
Urban and domestic wastes
Wastes
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Summary:This study aimed to identify distribution of metals and the influential factors on metal concentrations in incineration residues. Bottom ash and fly ash were sampled from 19 stoker and seven fluidized bed incinerators, which were selected to have a variety of furnace capacity, furnace temperature, and input waste. In the results, shredded bulky waste in input waste increased the concentration of some metals, such as Cd and Pb, and the effect was confirmed by analysis of shredded bulky waste. During MSW incineration, lithophilic metals such as Fe, Cu, Cr, and Al remained mainly in the bottom ash while Cd volatilized from the furnace and condensed to the fly ash. About two thirds of Pb and Zn was found in the bottom ash despite their high volatility. Finally, based on the results obtained in this study, the amount of metal in incineration residues of MSW was calculated and the loss of metal was estimated in terms of mass and money. A considerable amount of metal was found to be lost as waste material by landfilling of incineration residues.
ISSN:0956-053X
1879-2456
DOI:10.1016/S0956-053X(03)00137-5