Electric Arc Furnaces for Steel-Making: Hot Spots for Persistent Organic Pollutants

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• 作者：Mustafa Odabasi ; Abdurrahman Bayram ; Tolga Elbir ; Remzi Seyfioglu ; Yetkin Dumanoglu ; Ayse Bozlaker ; Hulusi Demircioglu ; Hasan Altiok ; Sinan Yatkin ; Banu Cetin
• 刊名：Environmental Science & Technology
• 出版年：2009
• 出版时间：July 15, 2009
• 年：2009
• 卷：43
• 期：14
• 页码：5205-5211
• 全文大小：268K
• 年卷期：v.43,no.14(July 15, 2009)
• ISSN：1520-5851

文摘

Persistent organic pollutant (POP) concentrations were measured in stack-gases of ferrous scrap processing steel plants with electric arc furnaces (EAFs) (n = 5) in Aliaga, Izmir, Turkey and in air (n = 11) at a site near those plants. Measured stack-gas concentrations for the four plants without scrap preheating (611 ± 311, 165000 ± 285000, and 33 ± 3 ng m⁻³, average ± SD for Σ₄₁PCBs, Σ₁₆PAHs, and Σ₇PBDEs, respectively) indicated that they are significant sources for polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and polybrominated diphenyl ethers (PBDEs). POP emissions from the plant with scrap preheating were significantly higher (13500, 445000, and 91 ng m⁻³ for Σ₄₁PCBs, Σ₁₆PAHs, and Σ₇PBDEs, respectively). It was also shown that the steel plants emit considerable amounts of fugitive POPs in particle-phase. Estimated emissions using the emission factors generated in this study and the production amounts suggested that the steel plants with EAFs may significantly contribute to local and global PAH, PCB, and PBDE emissions. Several other compounds (aromatic and aliphatic hydrocarbons, oxygen, sulfur, nitrogen, and chlorine-containing organic compounds, n = 49) were identified and determined semiquantitatively in the stack-gas and ambient air samples. Ambient air concentrations (62 ± 35, 320 ± 134 ng m⁻³, 1451 ± 954 pg m⁻³, for Σ₄₁PCBs, Σ₁₆PAHs, and Σ₇PBDEs, respectively) were significantly higher than those measured previously around the world and in the region, further confirming that the steel plants with EAFs are “hot spots” for POPs.