Monochlorinated to Octachlorinated Polychlorinated Dibenzo-p-dioxin and Dibenzofuran Emissions in Sintering Fly Ash from Multiple-Field Electrostatic Precipitators

• DOI: 10.1021/acs.est.7b04848
• Publication Date: 2018-01-18T11:52:17Z
• Authors: Mengjing Wang; Qianqian Li; Wenbin Liu; Mingliang Fang; Ying Han
• Keywords: Dibenzofuran; Polychlorinated Dibenzo-p-dioxins

Polychlorinated dibenzo-p-dioxin and dibenzofuran (PCDD/F) emissions in fly ash from multiple-field electrostatic precipitators different sized sintering plants were studied. The monochlorinated-trichlorinated tetrachlorinated-octachlorinated PCDD/F concentrations higher for small (90 m2) than medium (91-180 large (>180 plants. less-chlorinated contributions to the total increased as particle size decreased moving through precipitator stages; abundance of congeners homologues also increased. surface area can be directly used indicate PCDD/Fs toxic equivalents (TEQs). Previously ignored discarded identified. Estimated TEQ 155 1.979 kg TEQ, respectively, 2003-2014, ratio between annual flue gases has gradually Reductions emitted gas 2003-2014 28 40 kg, because phasing out small-scale TEQs 7476 180 g respectively.