Comparison of solidification/stabilization of fly ash and air pollution control residues from municipal solid waste incinerators with and without cement addition

Solidification/stabilization (S/S) of fly ash and air pollution control residues from MSWI was studied, with and without the use of cement. It appeared that metal and oxyanion leaching from these stabilised residues was comparable after 75 days of curing. Leaching of chloride and sulfate did not dec...

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Bibliographic Details
Published in:Journal of material cycles and waste management 2015-04, Vol.17 (2), p.229-236
Main Authors: Billen, Pieter, Verbinnen, Bram, De Smet, Michiel, Dockx, Greet, Ronsse, Sophie, Villani, Kenneth, De Greef, Johan, Van Caneghem, Jo, Vandecasteele, Carlo
Format: Article
Language:English
Subjects:
Acidification
Air pollution
Air pollution control
Categories
Cement
Cements
Chlorides
Civil Engineering
Climate change
Engineering
Environmental impact
Environmental Management
Fly ash
Hazardous materials
Incinerators
International
Leaching
Municipal solid waste
Outdoor air quality
Pollution control
Residues
Solidification
Solids
Special Feature: Original Article
Stabilization
Studies
Waste Management/Waste Technology
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Summary:Solidification/stabilization (S/S) of fly ash and air pollution control residues from MSWI was studied, with and without the use of cement. It appeared that metal and oxyanion leaching from these stabilised residues was comparable after 75 days of curing. Leaching of chloride and sulfate did not decrease by the addition of cement during S/S treatment. In an LCA perspective the environmental impact of the S/S treated mixtures with cement in the toxicity related impact categories was higher than the impact of the S/S treated mixtures without cement. Moreover, the production of cement for application in S/S also causes an impact in the impact categories climate change and terrestrial acidification. For environmental considerations in an LCA perspective S/S without cement should be preferred.
ISSN:1438-4957
1611-8227
DOI:10.1007/s10163-014-0292-4