Speciation of copper in plasma-melted slag

Yu Chun Huang; H. Paul Wang; Hsin Liang Huang; Yuh Jeen Huang; Juu En Chang; Yu Ling Wei

doi:10.1016/j.elspec.2006.11.056

Speciation of copper in plasma-melted slag

Yu Chun Huang, H. Paul Wang, Hsin Liang Huang, Yuh Jeen Huang, Juu En Chang, Yu Ling Wei

Department of Environmental Engineering

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Speciation of copper in the laboratory waste incineration ashes and plasma-melted slag has been studied by X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXFAS) spectroscopies. The component-fitted XANES spectra show that main copper species in the bottom and fly ashes are CuO (9-45%), Cu(OH)₂ (25-40%) and nanosize CuO (30-35%). During the plasma melting process at 1773 K, about 97% of Cu₂S in the slag is observed possibly due to sulfurization and self-reduction of CuO at high temperatures. By EXAFS, we also found that copper in the bottom and fly ashes possessed Cu{single bond}O bond distances of 1.97 and 1.99 Å with coordination numbers (CNs) of 2.1 and 2.3, respectively. In the slag, the bond distance of Cu-S is 2.3 Å with a CN of 3.8.

Original language	English
Pages (from-to)	214-216
Number of pages	3
Journal	Journal of Electron Spectroscopy and Related Phenomena
Volume	156-158
DOIs	https://doi.org/10.1016/j.elspec.2006.11.056
Publication status	Published - 2007 May 1

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Radiation
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Spectroscopy
Physical and Theoretical Chemistry

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@article{a4a4d8033dd04e6dac2928b4957ce805,

title = "Speciation of copper in plasma-melted slag",

abstract = "Speciation of copper in the laboratory waste incineration ashes and plasma-melted slag has been studied by X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXFAS) spectroscopies. The component-fitted XANES spectra show that main copper species in the bottom and fly ashes are CuO (9-45%), Cu(OH)2 (25-40%) and nanosize CuO (30-35%). During the plasma melting process at 1773 K, about 97% of Cu2S in the slag is observed possibly due to sulfurization and self-reduction of CuO at high temperatures. By EXAFS, we also found that copper in the bottom and fly ashes possessed Cu{single bond}O bond distances of 1.97 and 1.99 {\AA} with coordination numbers (CNs) of 2.1 and 2.3, respectively. In the slag, the bond distance of Cu-S is 2.3 {\AA} with a CN of 3.8.",

author = "Huang, {Yu Chun} and Wang, {H. Paul} and Huang, {Hsin Liang} and Huang, {Yuh Jeen} and Chang, {Juu En} and Wei, {Yu Ling}",

year = "2007",

month = may,

day = "1",

doi = "10.1016/j.elspec.2006.11.056",

language = "English",

volume = "156-158",

pages = "214--216",

journal = "Journal of Electron Spectroscopy and Related Phenomena",

issn = "0368-2048",

publisher = "Elsevier",

}

TY - JOUR

T1 - Speciation of copper in plasma-melted slag

AU - Huang, Yu Chun

AU - Wang, H. Paul

AU - Huang, Hsin Liang

AU - Huang, Yuh Jeen

AU - Chang, Juu En

AU - Wei, Yu Ling

PY - 2007/5/1

Y1 - 2007/5/1

N2 - Speciation of copper in the laboratory waste incineration ashes and plasma-melted slag has been studied by X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXFAS) spectroscopies. The component-fitted XANES spectra show that main copper species in the bottom and fly ashes are CuO (9-45%), Cu(OH)2 (25-40%) and nanosize CuO (30-35%). During the plasma melting process at 1773 K, about 97% of Cu2S in the slag is observed possibly due to sulfurization and self-reduction of CuO at high temperatures. By EXAFS, we also found that copper in the bottom and fly ashes possessed Cu{single bond}O bond distances of 1.97 and 1.99 Å with coordination numbers (CNs) of 2.1 and 2.3, respectively. In the slag, the bond distance of Cu-S is 2.3 Å with a CN of 3.8.

AB - Speciation of copper in the laboratory waste incineration ashes and plasma-melted slag has been studied by X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXFAS) spectroscopies. The component-fitted XANES spectra show that main copper species in the bottom and fly ashes are CuO (9-45%), Cu(OH)2 (25-40%) and nanosize CuO (30-35%). During the plasma melting process at 1773 K, about 97% of Cu2S in the slag is observed possibly due to sulfurization and self-reduction of CuO at high temperatures. By EXAFS, we also found that copper in the bottom and fly ashes possessed Cu{single bond}O bond distances of 1.97 and 1.99 Å with coordination numbers (CNs) of 2.1 and 2.3, respectively. In the slag, the bond distance of Cu-S is 2.3 Å with a CN of 3.8.

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VL - 156-158

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JO - Journal of Electron Spectroscopy and Related Phenomena

JF - Journal of Electron Spectroscopy and Related Phenomena

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