S. Kagaya et al., PHOTOCATALYZED DEGRADATION OF METAL-EDTA COMPLEXES IN TIO2 AQUEOUS SUSPENSIONS AND SIMULTANEOUS METAL REMOVAL, Chemistry Letters, (2), 1997, pp. 155-156
Cu(II)-, Fe(III)-, and Zn(II)-EDTA complexes are degraded rapidly in a
erated aqueous suspensions of TiO2 with a high-pressure mercury lamp (
irradiation wavelength > ca.290 nm), accompanying a full removal of th
e metals. Total organic carbons (TOCs) in their solutions decrease wit
h the irradiation time, however, TOCs remained after 5 h irradiation.
Although Co(II)- and Ni(II)-EDTA complexes are degraded, the removal o
f their metals is slow. Mn(TI)-EDTA complex is degraded incompletely e
ven after 5 h irradiation.