Dioxin emission from some metallurgical processes Online publication date: Wed, 01-Nov-2017
by Patrycja Łechtańska; Grzegorz Wielgosiński; Adam Grochowalski; Mariusz Holtzer; Włodzisław Ćwiąkalski
International Journal of Environment and Pollution (IJEP), Vol. 61, No. 3/4, 2017
Abstract: Results of the measurements of emissions of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans in two metallurgical plants representing ferrous metallurgy (an iron ore sintering plant) and non-ferrous metallurgy (a secondary copper smelter) are discussed in the paper. In the case of the secondary copper smelter dioxin concentrations were determined in the range from 0.03 to 8.1 ng TEQ/Nm3 and high variability of emissions was observed, which did not depend on the composition of material fed and the stage of smelting. In the case of measurements carried out in the iron ore sintering plant the concentrations ranged from 0.6 to 1.7 ng TEQ/Nm3. It was found additionally that a well-functioning electrostatic precipitator could reduce PCDD/Fs emissions even by 75% (with respect to the total mass of congeners), while off-gas recirculation had no significant effect on the emissions. The paper contains original results of dioxin emission measurements from a secondary copper smelter plant and an iron ore sintering plant in Poland. In the first plant, high variability of flue gas flow and concentrations of dioxins between successive batches as well as within a single smelting process was found. This problem has never been described in the literature. In the second plant, great stability of dioxin emissions from the iron ore sintering plant and high emission reduction efficiency (about 70%) of dioxins by an electrostatic precipitator were observed. No significant effect of gas recirculation on the PCDD/Fs emission was reported.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Environment and Pollution (IJEP):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com