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Evaluation of the emission characteristics of PCDD/Fs from electric arc furnaces.
Chemosphere. 2006 Mar; 62(11):1761-73.C

Abstract

Distribution of PCDD/F (polychlorinated dibenzo-p-dioxin and polychlorinated dibenzofuran) congeners at two electric arc furnaces (EAFs) in Taiwan is evaluated via intensive stack sampling and analysis. Two kinds of exhaust system in EAFs including stack system and shutter system are selected for measuring dioxin emissions. In addition, dioxin emissions during oxidation and reduction stages at EAF-A were characterized. Results indicate that the PCDD/F concentration of stack gas in EAF-A was 4.39 ng/Nm(3) while total Toxic Equivalent Quantity (TEQ) concentration was 0.35 ng I-TEQ/Nm(3). The PCDD/F concentration of stack gas in EAF-B was 2.20 ng/Nm(3) and the TEQ concentration was 0.14 ng I-TEQ/Nm(3). 1,2,3,4,6,7,8-H(p)CDF, OCDD and OCDF are the major contributors of the dioxin concentrations for two EAFs investigated and the percentage of PCDD/F in particulate phase increases as the chlorination level of the PCDD/F congener increases. The results obtained on gas/particulate partitioning of PCDD/Fs in flue gases prior to the APCD in EAFs indicate that more than 90% exists in particulate phase. In EAF-A, the PCDD/F concentration during oxidation stage is slightly higher than that measured during reduction stage, including the sampling points of CO converter outlet, prior to bag filter and stack. Majority of PCDD/Fs emitted from steel-making processes exists in particulate-phase (about 60-70%) at both EAFs investigated.

Authors+Show Affiliations

Graduate Institute of Environmental Engineering, National Central University, Chungli 320, Taiwan. mbchang@ncuen.ncu.eu.twNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16169048

Citation

Chang, Moo Been, et al. "Evaluation of the Emission Characteristics of PCDD/Fs From Electric Arc Furnaces." Chemosphere, vol. 62, no. 11, 2006, pp. 1761-73.
Chang MB, Huang HC, Tsai SS, et al. Evaluation of the emission characteristics of PCDD/Fs from electric arc furnaces. Chemosphere. 2006;62(11):1761-73.
Chang, M. B., Huang, H. C., Tsai, S. S., Chi, K. H., & Chang-Chien, G. P. (2006). Evaluation of the emission characteristics of PCDD/Fs from electric arc furnaces. Chemosphere, 62(11), 1761-73.
Chang MB, et al. Evaluation of the Emission Characteristics of PCDD/Fs From Electric Arc Furnaces. Chemosphere. 2006;62(11):1761-73. PubMed PMID: 16169048.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Evaluation of the emission characteristics of PCDD/Fs from electric arc furnaces. AU - Chang,Moo Been, AU - Huang,Hung Chi, AU - Tsai,Shian Sheng, AU - Chi,Kai Hsien, AU - Chang-Chien,Guo Ping, Y1 - 2005/09/16/ PY - 2004/09/02/received PY - 2005/04/21/revised PY - 2005/07/09/accepted PY - 2005/9/20/pubmed PY - 2006/6/13/medline PY - 2005/9/20/entrez SP - 1761 EP - 73 JF - Chemosphere JO - Chemosphere VL - 62 IS - 11 N2 - Distribution of PCDD/F (polychlorinated dibenzo-p-dioxin and polychlorinated dibenzofuran) congeners at two electric arc furnaces (EAFs) in Taiwan is evaluated via intensive stack sampling and analysis. Two kinds of exhaust system in EAFs including stack system and shutter system are selected for measuring dioxin emissions. In addition, dioxin emissions during oxidation and reduction stages at EAF-A were characterized. Results indicate that the PCDD/F concentration of stack gas in EAF-A was 4.39 ng/Nm(3) while total Toxic Equivalent Quantity (TEQ) concentration was 0.35 ng I-TEQ/Nm(3). The PCDD/F concentration of stack gas in EAF-B was 2.20 ng/Nm(3) and the TEQ concentration was 0.14 ng I-TEQ/Nm(3). 1,2,3,4,6,7,8-H(p)CDF, OCDD and OCDF are the major contributors of the dioxin concentrations for two EAFs investigated and the percentage of PCDD/F in particulate phase increases as the chlorination level of the PCDD/F congener increases. The results obtained on gas/particulate partitioning of PCDD/Fs in flue gases prior to the APCD in EAFs indicate that more than 90% exists in particulate phase. In EAF-A, the PCDD/F concentration during oxidation stage is slightly higher than that measured during reduction stage, including the sampling points of CO converter outlet, prior to bag filter and stack. Majority of PCDD/Fs emitted from steel-making processes exists in particulate-phase (about 60-70%) at both EAFs investigated. SN - 0045-6535 UR - https://www.unboundmedicine.com/medline/citation/16169048/Evaluation_of_the_emission_characteristics_of_PCDD/Fs_from_electric_arc_furnaces_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(05)00930-6 DB - PRIME DP - Unbound Medicine ER -