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    Please use this identifier to cite or link to this item: http://ir.lib.ksu.edu.tw/handle/987654321/4853


    Title: Thermal treatment of polychlorinated dibenzo-p-dioxinsand dibenzofurans from contaminated soils
    Authors: Wen-Jhy Leea
    Shun-I Shihc(史順益)
    Chih-Yuan Changa,b
    Yi-Chieh Lai
    Keywords: Soil
    PCDD/Fs
    Thermal
    Contamination
    Date: 2008
    Issue Date: 2009-09-11 14:24:06 (UTC+8)
    Abstract: Thermal treatment technologywas used to remove polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) from heavily contaminated soil. For a soil with an original PCDD/F content of 35,970 ng International Toxic Equivalents (I-TEQ)/kg, >99.99% PCDD/F removal efficiency was obtained with a primary furnace at two different treatment temperatures (750 ◦C and 850 ◦C), while a secondary furnace at 1200 ◦C
    gave >98% decomposition efficiency. The total PCDD/F I-TEQ contents in treated soils at 750 ◦C and 850 ◦C were 1.56 ng I-TEQ/kg and 2.15 ng I-TEQ/kg, respectively, which were far below the soil pollution standard
    of Taiwan (1000 ng I-TEQ/kg soil). Although air pollution control devices had significant effects on the removal of PCDD/Fs, the total I-TEQ concentrations in the upstream flue gas of PUF cartridge at 750 ◦C and 850 ◦C (2.61 ng I-TEQ/Nm3 and 2.38 ng I-TEQ/Nm3, respectively)were still higher than the stationary emission
    limit of the Taiwan EPA (0.5 ng I-TEQ/Nm3). The above results also suggested that additional APCDs, such as activated carbon injection in front of the filter are needed to enhance PCDD/F removal efficiency.
    Relation: Journal of Hazardous Materials
    Appears in Collections:[環境工程系所] 期刊論文

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