Journal
CHEMOSPHERE
Volume 65, Issue 3, Pages 514-520Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2006.01.021
Keywords
dioxin; municipal solid waste incinerators; bottom ash; particle size distribution
Categories
Ask authors/readers for more resources
In this study, bottom ash was sampled from two Taiwanese municipal solid waste incinerators (MSWIs: A and B) and sieved to size classes of 4.75-9.5 mm, 2.36-4.75 mm, 1.0-2.36 mm, 0.6-1.0 mm, 0.3-0.6 mm, 0.21-0.3 mm, 0.125-0.21 mm, 0.075-0.125 mm and < 0.074 mm. For both MSWIs, the major peak in the particle size distribution for the PCDD/F content was found in a particle size < 0.21 mm, that is, 16.1 (A) and 4.37 pg I-TEQ/g (B). This is due to the fact that a smaller particle has higher specific surface area thus offering more adsorption sites. The mean cumulative fractions (F%) of PCDD/F I-TEQ in the bottom ash of MSWI A and B in the particle size range below 0.6, 2.36 and 4.75 mm, in sequence, are 40.4%, 77.2% and 95.6%, respectively. We suggest sieving the bottom ash before the subsequent reutilization at the suggested cut size of 0.6 turn. In the view of PCDD/Fs, bottom ash with a particle size larger than 0.6 mm, which is the more non-hazardous part, may be suitable for being the raw material of landfilling soil, road sub-base, and construction blocks. For the minus 0.6 mm fraction, vitrification with fly ash is one of the choices. (c) 2006 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available