Emissions of polychlorinated dibenzo-p-dioxins and dibenzofurans from various industrial sources
Journal Article
·
· Journal of the Air and Waste Management Association
OSTI ID:20838182
- National Cheng Kung University, Tainan (Taiwan). Department of Environmental Engineering, and Sustainable Environment Research Center
This study characterized the emissions of polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) from the stack flue gases of 17 industrial sources, which were classified into 10 categories. The results show that the mean PCDD/PCDF concentration of secondary zinc smelter (Zn-S) and secondary copper smelter (Cu-S) is 2.44 ng international toxic equivalent (I-TEQ)/Nm{sup 3} (N represents normal conditions at 0{sup o}C, 760 mmHg), which was found to be significantly greater than that of industrial waste incinerators (mean concentration = 0.15 ng I-TEQ/Nm{sup 3}). These results imply that the controlling of secondary metallurgical melting processes is more important than industrial waste incineration for the reduction of PCDD/PCDF emissions. The mean emission factors of cement production, Zn-S and Cu-S, are 0.052, 1.99, and 1.73 {mu}g I-TEQ/t product, respectively. The cement plant uses bituminous coal as fuel. For industrial waste incineration, the mean emission factors of waste rubber, waste liquor, waste sludge, industrial waste solid (IWI)-1, IWI-2, IWI-3, and IWI-4 are 0.752, 0.435, 0.760, 6.64, 1.67, 2.38, and 0.094 {mu}g I-TEQ/t feed, respectively. Most of the PCDD/PCDF emission factors established in this study are less than those reported in previous studies, which could be because of the more stringent regulations for PCDD/PCDF emissions in recent years. 20 refs., 1 fig., 7 tabs.
- OSTI ID:
- 20838182
- Journal Information:
- Journal of the Air and Waste Management Association, Journal Name: Journal of the Air and Waste Management Association Journal Issue: 12 Vol. 56; ISSN JAWAEB; ISSN 1047-3289
- Country of Publication:
- United States
- Language:
- English
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