Photocatalyzed Degradation of Metal-EDTA Complexes in TiO_2 Aqueous Suspensions and Simultaneous Metal Removal
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Cu(II)-, Fe(III)-, and Zn(II)-EDTA complexes are degraded rapidly in aerated aqueous suspensions of TiO<SUB>2</SUB> with a high-pressure mercury lamp (irradiation wavelength > ca.290 nm), accompanying a full removal of the metals. Total organic carbons (TOCs) in their solutions decrease with the irradiation time, however, TOCs remained after 5 h irradiation. Although Co(II)- and Ni(II)-EDTA complexes are degraded, the removal of their metals is slow. Mn(II)-EDTA complex is degraded incompletely even after 5 h irradiation.
- Chemistry Letters
Chemistry Letters 1997(2), 155-156, 1997-02
The Chemical Society of Japan