Speciation of copper in plasma-melted slag

Yu Chun Huang, Hong-Paul Wang, Hsin Liang Huang, Yuh Jeen Huang, Juu-En Chang, Yu Ling Wei

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)214-216
Number of pages3
JournalJournal of Electron Spectroscopy and Related Phenomena
Volume156-158
DOIs
Publication statusPublished - 2007 May 1

Fingerprint

Coal Ash
slags
ashes
Slags
Copper
fly ash
X ray absorption
Ashes
Plasmas
Fly ash
coordination number
copper
Extended X ray absorption fine structure spectroscopy
incinerators
x rays
Waste incineration
Melting
fine structure
melting
spectroscopy

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

Cite this

Huang, Yu Chun ; Wang, Hong-Paul ; Huang, Hsin Liang ; Huang, Yuh Jeen ; Chang, Juu-En ; Wei, Yu Ling. / Speciation of copper in plasma-melted slag. In: Journal of Electron Spectroscopy and Related Phenomena. 2007 ; Vol. 156-158. pp. 214-216.
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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.",
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Speciation of copper in plasma-melted slag. / Huang, Yu Chun; Wang, Hong-Paul; Huang, Hsin Liang; Huang, Yuh Jeen; Chang, Juu-En; Wei, Yu Ling.

In: Journal of Electron Spectroscopy and Related Phenomena, Vol. 156-158, 01.05.2007, p. 214-216.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Speciation of copper in plasma-melted slag

AU - Huang, Yu Chun

AU - Wang, Hong-Paul

AU - Huang, Hsin Liang

AU - Huang, Yuh Jeen

AU - Chang, Juu-En

AU - Wei, Yu Ling

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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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