NDLI: Removal of polychlorinated biphenyls by desulfurization and emissions of polychlorinated biphenyls from sintering plants

Content Provider	Springer Nature Link
Author	Wang, Mengjing Hou, Meifang Zhao, Kai Li, Haifeng Han, Ying Liao, Xiao Chen, Xuebin Liu, Wenbin
Copyright Year	2015
Abstract	The influence of desulfurization on polychlorinated biphenyls (PCBs) from sintering plants was investigated. The concentrations of dioxin-like (dl) PCBs, toxic equivalents (TEQs), indicator PCBs, and total tri- to deca-chlorinated PCB homolog groups (∑PCBs) in the flue gases at the desulfurization system inlets were 290–1906 pg m$^{−3}$ (2.4–18.8 pg World Health Organization (WHO) TEQ m$^{−3}$), 420–2885 pg m$^{−3}$, and 6496–22,648 pg m$^{−3}$, respectively. Desulfurization reduced the values to 43.3–500 pg m$^{−3}$ (0.46–9.5 pg WHO-TEQ m$^{−3}$), 183–587 pg m$^{−3}$, and 2383–11,639 pg m$^{−3}$, respectively. The removed PCBs were adsorbed by gypsum from the flue gas; the PCB concentration distributions at the inlets and outlets and in the gypsum samples were similar. The emission factors were 9.86 ng WHO-TEQ t$^{−1}$ for the flue gas and 8.37 ng WHO-TEQ t$^{−1}$ for gypsum. Desulfurization decreased the annual atmospheric PCB emissions from 48.6 to 30.7 g WHO-TEQ, and the estimated annual emissions in gypsum were 8.06 g WHO-TEQ. PCBs in the gypsum have not been effectively eliminated and will probably reenter the environment and in turn become a new source of PCB emission. The PCB concentrations in fly ashes from series-connected electrostatic precipitators clearly increased.
Starting Page	7369
Ending Page	7375
Page Count	7
File Format	PDF
ISSN	09441344
Journal	Environmental Science and Pollution Research
Volume Number	23
Issue Number	8
e-ISSN	16147499
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-12-22
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Polychlorinated biphenyls Desulfurization Removal Gypsum Fly ash Emission factor Environment Environmental Chemistry Ecotoxicology Environmental Health Atmospheric Protection/Air Quality Control/Air Pollution Waste Water Technology Water Pollution Control Water Management Aquatic Pollution
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Health, Toxicology and Mutagenesis Pollution Medicine

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