Polychlorinated dibenzo-p-dioxin and dibenzofuran emissions from an industrial park clustered with metallurgical industries.
Emissions of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) from an industrial park operated as Taiwan's center of metallurgical industries were investigated. The characteristics of mean PCDD/F I-TEQ concentrations, congener profiles and emission factors of each source were studied over samples of stack flue gases of individual sources. Different characteristics of congener profiles and large variations of emission factors of secondary aluminum smelters (ALSs) were observed. The mean emission factors of electric arc furnaces were comparable to those for ALSs and much greater than those of municipal solid waste incinerators and sinter plants, but still less than that of clinical waste incinerators. Annual PCDD/F emission contribution of each source was estimated, raising critical concerns over the overall PCDD/F emissions from metallurgical processes. The metallurgical industries altogether contributed approximately 98.1% of the total annual emissions, while waste incinerators only 1.9%. The contributions by sinter plants and metallurgical industries to the total annual emissions of the Park were much higher than the corresponding national averages of Taiwan. The combined dioxin emissions from the entire metallurgical processes and their controls should be seriously envisaged by industrial parks devoted to metal productions.
Wang
Jenshi B
JB
Department of Chemical Engineering, I-Shou University, 1 Section 1, Syuecheng Road, Dashu, Kaohsiung County 840, Taiwan.
Hung
Chung-Hsien
CH
Hung
Chung-Hsuang
CH
Chang-Chien
Guo-Ping
GP
D000393:Air Pollutants / Q000032:analysis*; D000535:Aluminum / Q000737:chemistry*; D001572:Benzofurans / Q000737:chemistry*; D004147:Dioxins / Q000737:chemistry*; D004784:Environmental Monitoring; D017745:Incineration; D007220:Industrial Waste; D007221:Industry; D008669:Metallurgy; D008670:Metals / Q000737:chemistry; D015233:Models, Statistical; D013624:Taiwan
D000393:Air Pollutants; D001572:Benzofurans; D004147:Dioxins; D007220:Industrial Waste; D008670:Metals; C023614:dibenzofuran; D000535:Aluminum; C020887:dibenzo(1,4)dioxin