Speciation of copper in the thermally stabilized slag

Y. J. Tuan, H. Paul Wang, J. E. Chang, C. C. Chao, C. K. Tsaia

研究成果: Article

3 引文 (Scopus)

摘要

The Taiwan universities laboratory hazardous wastes have been treated by incineration at the temperature range of 1173-1273 K. By X-ray absorption near edge structure (XANES) spectroscopy, mainly CuO and CuSO4 are found in the incineration bottom and fly ashes. The incineration fly ash can be stabilized thermally at 1773K in the plasma melting reaction chamber (integrated with the incinerator), and converted to slag. The concentration of leachable copper in the slag is reduced significantly mainly due to the fact that copper is encapsulated in the SiO2 matrix. In addition, the refined extended X-ray adsorption fine structure (EXAFS) spectra of copper also indicate formation of the Cu-O-Si species in the slag as the bond distances of 1.95 Å for Cu-O and 2.67 Å for O-Si are observed. This work exemplifies utilization of the synchrotron X-ray absorption spectroscopy to facilitate the thermal stabilization treatments of the fly ash hazardous waste using the plasma melting method.

指紋

incinerators
Waste incineration
slags
Fly ash
Slags
fly ash
hazardous wastes
Copper
copper
Melting
X ray absorption near edge structure spectroscopy
Plasmas
X ray absorption spectroscopy
Refuse incinerators
melting
Synchrotrons
x rays
Taiwan
ashes
Stabilization

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation

引用此文

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title = "Speciation of copper in the thermally stabilized slag",
abstract = "The Taiwan universities laboratory hazardous wastes have been treated by incineration at the temperature range of 1173-1273 K. By X-ray absorption near edge structure (XANES) spectroscopy, mainly CuO and CuSO4 are found in the incineration bottom and fly ashes. The incineration fly ash can be stabilized thermally at 1773K in the plasma melting reaction chamber (integrated with the incinerator), and converted to slag. The concentration of leachable copper in the slag is reduced significantly mainly due to the fact that copper is encapsulated in the SiO2 matrix. In addition, the refined extended X-ray adsorption fine structure (EXAFS) spectra of copper also indicate formation of the Cu-O-Si species in the slag as the bond distances of 1.95 {\AA} for Cu-O and 2.67 {\AA} for O-Si are observed. This work exemplifies utilization of the synchrotron X-ray absorption spectroscopy to facilitate the thermal stabilization treatments of the fly ash hazardous waste using the plasma melting method.",
author = "Tuan, {Y. J.} and Wang, {H. Paul} and Chang, {J. E.} and Chao, {C. C.} and Tsaia, {C. K.}",
year = "2010",
month = "7",
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language = "English",
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TY - JOUR

T1 - Speciation of copper in the thermally stabilized slag

AU - Tuan, Y. J.

AU - Wang, H. Paul

AU - Chang, J. E.

AU - Chao, C. C.

AU - Tsaia, C. K.

PY - 2010/7/1

Y1 - 2010/7/1

N2 - The Taiwan universities laboratory hazardous wastes have been treated by incineration at the temperature range of 1173-1273 K. By X-ray absorption near edge structure (XANES) spectroscopy, mainly CuO and CuSO4 are found in the incineration bottom and fly ashes. The incineration fly ash can be stabilized thermally at 1773K in the plasma melting reaction chamber (integrated with the incinerator), and converted to slag. The concentration of leachable copper in the slag is reduced significantly mainly due to the fact that copper is encapsulated in the SiO2 matrix. In addition, the refined extended X-ray adsorption fine structure (EXAFS) spectra of copper also indicate formation of the Cu-O-Si species in the slag as the bond distances of 1.95 Å for Cu-O and 2.67 Å for O-Si are observed. This work exemplifies utilization of the synchrotron X-ray absorption spectroscopy to facilitate the thermal stabilization treatments of the fly ash hazardous waste using the plasma melting method.

AB - The Taiwan universities laboratory hazardous wastes have been treated by incineration at the temperature range of 1173-1273 K. By X-ray absorption near edge structure (XANES) spectroscopy, mainly CuO and CuSO4 are found in the incineration bottom and fly ashes. The incineration fly ash can be stabilized thermally at 1773K in the plasma melting reaction chamber (integrated with the incinerator), and converted to slag. The concentration of leachable copper in the slag is reduced significantly mainly due to the fact that copper is encapsulated in the SiO2 matrix. In addition, the refined extended X-ray adsorption fine structure (EXAFS) spectra of copper also indicate formation of the Cu-O-Si species in the slag as the bond distances of 1.95 Å for Cu-O and 2.67 Å for O-Si are observed. This work exemplifies utilization of the synchrotron X-ray absorption spectroscopy to facilitate the thermal stabilization treatments of the fly ash hazardous waste using the plasma melting method.

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U2 - 10.1016/j.nima.2010.01.023

DO - 10.1016/j.nima.2010.01.023

M3 - Article

AN - SCOPUS:78650271882

VL - 619

SP - 316

EP - 318

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

SN - 0168-9002

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ER -