Speciation of copper in a contaminated soil during H3PO 4-assisted EKR

S. H. Liu; H. Paul Wang; M. Y. Yu; Y. J. Huang; H. C. Wang

doi:10.1016/j.elspec.2005.01.283

Speciation of copper in a contaminated soil during H₃PO ₄-assisted EKR

S. H. Liu, H. Paul Wang, M. Y. Yu, Y. J. Huang, H. C. Wang

Department of Environmental Engineering

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

8 Citations (Scopus)

Abstract

Speciation of copper in a contaminated soil during electrokinetic remediation (EKR) assisted by H₃PO₄ was studied by in situ X-ray absorption near edge structural (XANES) spectroscopy. The least-square fit of the XANES spectrum showed that CuCO₃ (68%) and CuCl ₂ (32%) were the major copper species in the contaminated soil. In the presence of H₃PO₄ (40%), most of CuCl₂ and about 24% of CuCO₃ were dissolved into the aqueous phase. After 90 min of EKR, at least 30% of Cu(II) ions were transported towards the cathode by electric field. A similar dissolution behavior of copper from the soil with 40% H₃PO₄ and 2% H₂O₂ was also observed. Nevertheless, migration of Cu(II) ions to the cathode was highly enhanced in the presence of H₃PO₄ and H₂O₂ by EKR for the first 90 min.

Original language	English
Pages (from-to)	311-314
Number of pages	4
Journal	Journal of Electron Spectroscopy and Related Phenomena
Volume	144-147
DOIs	https://doi.org/10.1016/j.elspec.2005.01.283
Publication status	Published - 2005 Jun

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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10.1016/j.elspec.2005.01.283

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title = "Speciation of copper in a contaminated soil during H3PO 4-assisted EKR",

abstract = "Speciation of copper in a contaminated soil during electrokinetic remediation (EKR) assisted by H3PO4 was studied by in situ X-ray absorption near edge structural (XANES) spectroscopy. The least-square fit of the XANES spectrum showed that CuCO3 (68%) and CuCl 2 (32%) were the major copper species in the contaminated soil. In the presence of H3PO4 (40%), most of CuCl2 and about 24% of CuCO3 were dissolved into the aqueous phase. After 90 min of EKR, at least 30% of Cu(II) ions were transported towards the cathode by electric field. A similar dissolution behavior of copper from the soil with 40% H3PO4 and 2% H2O2 was also observed. Nevertheless, migration of Cu(II) ions to the cathode was highly enhanced in the presence of H3PO4 and H2O2 by EKR for the first 90 min.",

author = "Liu, {S. H.} and Wang, {H. Paul} and Yu, {M. Y.} and Huang, {Y. J.} and Wang, {H. C.}",

year = "2005",

month = jun,

doi = "10.1016/j.elspec.2005.01.283",

language = "English",

volume = "144-147",

pages = "311--314",

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

issn = "0368-2048",

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T1 - Speciation of copper in a contaminated soil during H3PO 4-assisted EKR

AU - Liu, S. H.

AU - Wang, H. Paul

AU - Yu, M. Y.

AU - Huang, Y. J.

AU - Wang, H. C.

PY - 2005/6

Y1 - 2005/6

N2 - Speciation of copper in a contaminated soil during electrokinetic remediation (EKR) assisted by H3PO4 was studied by in situ X-ray absorption near edge structural (XANES) spectroscopy. The least-square fit of the XANES spectrum showed that CuCO3 (68%) and CuCl 2 (32%) were the major copper species in the contaminated soil. In the presence of H3PO4 (40%), most of CuCl2 and about 24% of CuCO3 were dissolved into the aqueous phase. After 90 min of EKR, at least 30% of Cu(II) ions were transported towards the cathode by electric field. A similar dissolution behavior of copper from the soil with 40% H3PO4 and 2% H2O2 was also observed. Nevertheless, migration of Cu(II) ions to the cathode was highly enhanced in the presence of H3PO4 and H2O2 by EKR for the first 90 min.

AB - Speciation of copper in a contaminated soil during electrokinetic remediation (EKR) assisted by H3PO4 was studied by in situ X-ray absorption near edge structural (XANES) spectroscopy. The least-square fit of the XANES spectrum showed that CuCO3 (68%) and CuCl 2 (32%) were the major copper species in the contaminated soil. In the presence of H3PO4 (40%), most of CuCl2 and about 24% of CuCO3 were dissolved into the aqueous phase. After 90 min of EKR, at least 30% of Cu(II) ions were transported towards the cathode by electric field. A similar dissolution behavior of copper from the soil with 40% H3PO4 and 2% H2O2 was also observed. Nevertheless, migration of Cu(II) ions to the cathode was highly enhanced in the presence of H3PO4 and H2O2 by EKR for the first 90 min.

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VL - 144-147

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JO - Journal of Electron Spectroscopy and Related Phenomena

JF - Journal of Electron Spectroscopy and Related Phenomena

ER -

Speciation of copper in a contaminated soil during H₃PO ₄-assisted EKR

Abstract

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