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| Titel |
In situ XANES studies of copper in a contaminated soil under electric field |
| VerfasserIn |
M.-Y. Yu, H. Paul Wang, C.-Y. Liao, Y.-J. Huang, Y.-L. Wei |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250022436
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| Zusammenfassung |
| Speciation of copper in a contaminated soil during electrokinetic treatments has been studied
by in situ X-ray absorption near edge structural (XANES) spectroscopy. The least-square
fitted XANES spectra show that CuCO3(68%) and CuCl2 (32%) are the major copper species
in the contaminated soil. In the presence of H3PO4 (40%), 95% of CuCl2and 28% of CuCO3
are dissolved into the aqueous phase. After 90 minutes of the electrokinetic treatments, at
least 26% of Cu(II) are transported toward the cathode under the electric field (1-5 V/cm).
Similar dissolution behavior of copper from the soil with 40% of H3PO4 and 2% of
H2O2 is also observed. Migration of Cu(II) to the cathode is highly enhanced under
the electric field (5 volts/cm) in the first 90 minutes of the electrokinetic process. |
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