Yu-Chieh Kuo1, Yu-Cheng Chen1, Chi-Wei Yang2, Jin-Luh Mou3, Tung-Sheng Shih4, Perng-Jy Tsai 1,4

  • 1 Department of Environmental and Occupational Health, Medical College, National Cheng Kung University, 138, Sheng-Li Road, Tainan 70428, Taiwan
  • 2 Department of New Materials Research & Development, China Steel Corporation, 1 China Steel Road, Kaohsiung, Taiwan
  • 3 Department of Occupational Safety and Health, Chung Hwa University of Medical Technology, 89 Wenhwa first street, Tainan71703, Taiwan
  • 4 Department of Occupational Safety and Health, College of Public Health, China Medical University, 91, Hsueh-Shih Road, Taichung 40402, Taiwan

Received: March 9, 2011
Revised: April 26, 2011
Accepted: April 26, 2011
Download Citation: ||https://doi.org/10.4209/aaqr.2011.03.0024  

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Cite this article:
Kuo, Y.C., Chen, Y.C., Yang, C.W., Mou, J.L., Shih, T.S. and Tsai, P.J. (2011). Identification the Content of the Windbox Dust Related to the Formation of PCDD/Fs during the Iron Ore Sintering Process. Aerosol Air Qual. Res. 11: 351-359. https://doi.org/10.4209/aaqr.2011.03.0024



This study measured the contents of the ionic and elemental constituents, and the chemical compounds containing in windbox (WB) dusts collected from a commercial iron ore sintering plant, then the results were used to identify possible PCDD/Fs formation pathways in the WB. We found that the abundance in both KCl and NaCl may provide a suitable condition for de novo synthesis of PCDD/Fs in the WB. Al, Fe, K, Ca, and Pb were the top five contents in WB16 dusts, but the co-existence of the above five metal contents warrants the need for further investigation on their roles in PCDD/F formation processes in the future. Although a low concentration of Cu was detected, it might be of importance to PCDD/Fs formation inside the WB. A total of 29 chemical compounds were identified. Among them, several oxygenated organic compound might be associated with PCDD/F formations at the beginning stage, but the roles of aromatic oxygenates on the formation of PCDD/Fs required further investigation. Finally, possible de novo synthesis pathways of PCDD/Fs were proposed based on the above findings. However, the above pathways are required further laboratory studies for validation before possible formation suppression approaches can be determined.

Keywords: PCDD/Fs; Iron ore sintering; Windbox dusts; Chemical contents; de novo synthesis

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