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Effect of raw materials on emissions of polychlorinated dibenzo-p-dioxins and dibenzofurans from the stack flue gases of secondary aluminum smelters.
J Hazard Mater. 2007 Aug 25; 147(3):776-84.JH

Abstract

The present study was undertaken to investigate the effect of raw materials on PCDD/F emission from secondary aluminum smelters (ALS). Four plants each of aluminum ingot smelters (over 50% ingot) and secondary ALS (over 70% waste or recycled aluminum) were selected and the results compared. The secondary ALS yield much higher PCDD/Fs than the aluminum ingot smelters, or 7.94-22.76ng/Nm(3) versus 0.57-2.67ng/Nm(3), due to the large percentage of waste or recycled aluminum used. As for air pollution control devices (APCDs), the wet scrubber system in one of the aluminum ingot smelters exhibits an adverse effect on PCDD/F removal, due to the continuous recycle of the contaminated water through the scrubber system. Another ingot plant equipped with cartridge filter, there is a significant reduction in PCDD/F TEQ (52%). The powdered activated carbon injection at 2kg/h (110mg/Nm(3)) in one ALS reduces 70% of the total PCDD/Fs. The average emission factor of four secondary ALS is much higher than that of aluminum ingot smelters, or 20-fold higher based on either raw materials or product. Consequently, more attention should be paid to the emission reduction of PCDD/Fs from the secondary ALS, including installation of a secondary burner, additional APCDs and the pre-cleaning of raw materials.

Authors+Show Affiliations

Department of Environmental Engineering, National Cheng Kung University, Tainan 70101, Taiwan, ROC.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17324506

Citation

Li, Hsing-Wang, et al. "Effect of Raw Materials On Emissions of Polychlorinated Dibenzo-p-dioxins and Dibenzofurans From the Stack Flue Gases of Secondary Aluminum Smelters." Journal of Hazardous Materials, vol. 147, no. 3, 2007, pp. 776-84.
Li HW, Lee WJ, Huang KL, et al. Effect of raw materials on emissions of polychlorinated dibenzo-p-dioxins and dibenzofurans from the stack flue gases of secondary aluminum smelters. J Hazard Mater. 2007;147(3):776-84.
Li, H. W., Lee, W. J., Huang, K. L., & Chang-Chien, G. P. (2007). Effect of raw materials on emissions of polychlorinated dibenzo-p-dioxins and dibenzofurans from the stack flue gases of secondary aluminum smelters. Journal of Hazardous Materials, 147(3), 776-84.
Li HW, et al. Effect of Raw Materials On Emissions of Polychlorinated Dibenzo-p-dioxins and Dibenzofurans From the Stack Flue Gases of Secondary Aluminum Smelters. J Hazard Mater. 2007 Aug 25;147(3):776-84. PubMed PMID: 17324506.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of raw materials on emissions of polychlorinated dibenzo-p-dioxins and dibenzofurans from the stack flue gases of secondary aluminum smelters. AU - Li,Hsing-Wang, AU - Lee,Wen-Jhy, AU - Huang,Kuo-Lin, AU - Chang-Chien,Guo-Ping, Y1 - 2007/01/26/ PY - 2006/08/01/received PY - 2007/01/05/revised PY - 2007/01/22/accepted PY - 2007/2/28/pubmed PY - 2007/12/7/medline PY - 2007/2/28/entrez SP - 776 EP - 84 JF - Journal of hazardous materials JO - J Hazard Mater VL - 147 IS - 3 N2 - The present study was undertaken to investigate the effect of raw materials on PCDD/F emission from secondary aluminum smelters (ALS). Four plants each of aluminum ingot smelters (over 50% ingot) and secondary ALS (over 70% waste or recycled aluminum) were selected and the results compared. The secondary ALS yield much higher PCDD/Fs than the aluminum ingot smelters, or 7.94-22.76ng/Nm(3) versus 0.57-2.67ng/Nm(3), due to the large percentage of waste or recycled aluminum used. As for air pollution control devices (APCDs), the wet scrubber system in one of the aluminum ingot smelters exhibits an adverse effect on PCDD/F removal, due to the continuous recycle of the contaminated water through the scrubber system. Another ingot plant equipped with cartridge filter, there is a significant reduction in PCDD/F TEQ (52%). The powdered activated carbon injection at 2kg/h (110mg/Nm(3)) in one ALS reduces 70% of the total PCDD/Fs. The average emission factor of four secondary ALS is much higher than that of aluminum ingot smelters, or 20-fold higher based on either raw materials or product. Consequently, more attention should be paid to the emission reduction of PCDD/Fs from the secondary ALS, including installation of a secondary burner, additional APCDs and the pre-cleaning of raw materials. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/17324506/Effect_of_raw_materials_on_emissions_of_polychlorinated_dibenzo_p_dioxins_and_dibenzofurans_from_the_stack_flue_gases_of_secondary_aluminum_smelters_ DB - PRIME DP - Unbound Medicine ER -