Please use this identifier to cite or link to this item:
|Title:||Monochlorinated to octachlorinated polychlorinated dibenzo-p-dioxin and dibenzofuran emissions in sintering fly ash from multiple-field electrostatic precipitators||Authors:||Wang, Mengjing
|Keywords:||Engineering::Civil engineering||Issue Date:||2018||Source:||Wang, M., Li, Q., Liu, W., Fang, M., & Han, Y. (2018). Monochlorinated to octachlorinated polychlorinated dibenzo-p-dioxin and dibenzofuran emissions in sintering fly ash from multiple-field electrostatic precipitators. Environmental Science and Technology, 52(4), 1871-1879. doi:10.1021/acs.est.7b04848||Journal:||Environmental Science and Technology||Abstract:||Polychlorinated dibenzo-p-dioxin and dibenzofuran (PCDD/F) emissions in fly ash from multiple-field electrostatic precipitators in different sized sintering plants were studied. The monochlorinated-trichlorinated and tetrachlorinated-octachlorinated PCDD/F concentrations were higher for small plants (90 m2) than for medium (91-180 m2) and large (>180 m2) plants. The PCDD/F concentrations and less-chlorinated PCDD/F contributions to the total PCDD/F concentrations increased as the fly ash particle size decreased moving through the precipitator stages; the abundance of monochlorinated-trichlorinated PCDD/F congeners and homologues also increased. The ash particle size and surface area can be directly used to indicate monochlorinated-trichlorinated PCDD/Fs and toxic equivalents (TEQs). Previously ignored PCDD/F emissions in discarded fly ash were identified. Estimated total monochlorinated-trichlorinated PCDD/F and TEQ emissions in discarded fly ash were 155 and 1.979 kg TEQ, respectively, in 2003-2014, and the ratio between annual PCDD/F emissions in discarded fly ash and flue gases has gradually increased. Reductions in monochlorinated-trichlorinated PCDD/F emitted in flue gas and fly ash in 2003-2014 were 28 and 40 kg, respectively, because of the phasing out of small-scale plants. Reductions in TEQs emitted in flue gas and fly ash in 2003-2014 were 7476 and 180 g TEQ, respectively.||URI:||https://hdl.handle.net/10356/137814||ISSN:||0013-936X||DOI:||10.1021/acs.est.7b04848||Rights:||© 2018 American Chemical Society. All rights reserved.||Fulltext Permission:||none||Fulltext Availability:||No Fulltext|
|Appears in Collections:||CEE Journal Articles|
Updated on Mar 10, 2021
Updated on Mar 9, 2021
Updated on Dec 7, 2021
Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.