TY - JOUR
T1 - Tracking of copper species in incineration fly ashes
AU - Hsiao, M. C.
AU - Wang, H. Paul
AU - Chang, Juu En
AU - Peng, C. Y.
N1 - Funding Information:
The financial supports of the Taiwan National Science Council and Bureau of Energy are gratefully acknowledged. We also thank Prof. Y.W. Yang and Dr. Jyh-Fu Lee of the Taiwan NSRRC for their XANES experimental assistance.
PY - 2006/12/1
Y1 - 2006/12/1
N2 - 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.
AB - 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.
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U2 - 10.1016/j.jhazmat.2006.05.087
DO - 10.1016/j.jhazmat.2006.05.087
M3 - Article
C2 - 16839673
AN - SCOPUS:33750517072
SN - 0304-3894
VL - 138
SP - 539
EP - 542
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
IS - 3
ER -