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    Please use this identifier to cite or link to this item: http://ir.lib.ksu.edu.tw/handle/987654321/5892


    Title: Chemical Structure of Copper in Incineration Dry Scrubber and Bag Filter Ashes
    Authors: M. C. Hsiao (蕭明謙)
    H. Paul Wang
    Juu-En Chang
    C. Y. Peng
    Keywords: XANES
    Fly ash
    Copper
    Date: 2007
    Issue Date: 2009-11-20 12:24:00 (UTC+8)
    Abstract: Speciation of copper in the incineration waste heat boiler (HB) and the down stream
    electrostatic precipitator (EP) fly ashes during the flue gas cooling down (1123→473 K)
    has been studied by X-ray absorption near edge structural (XANES) spectroscopy in the
    present work. Copper species such as Cu(OH)2 (59-67%), CuCl2 (5-12%), CuO
    (24-26%), and a small amount of CuS (3-4%) in fly ashes were determined by
    semi-quantitative analyses of the XANES spectra. In the toxicity characteristics
    leaching procedure (TCLP) tests, about 83% and 20% of copper were leached from the
    EP and HB fly ashes, respectively. The relatively high leachability of copper for the
    EP fly ash might be due to the fact that CuCl2 was enriched on the surfaces as observed
    by X-ray photoelectron spectroscopy (XPS). On the contrary, CuCl2 was mainly
    encapsulated in the HB fly ashes.
    Appears in Collections:[環境工程系所] 期刊論文

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