PHOTOCATALYZED DEGRADATION OF METAL-EDTA COMPLEXES IN TIO2 AQUEOUS SUSPENSIONS AND SIMULTANEOUS METAL REMOVAL

Authors
KAGAYA S BITOH Y HASEGAWA K
Citation
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
Citations number
9
Categorie Soggetti
Chemistry
Journal title
Chemistry Letters → ACNP
ISSN journal
03667022
Issue
2
Year of publication
1997
Pages
155 - 156
Database
ISI
SICI code
0366-7022(1997):2<155:PDOMCI>2.0.ZU;2-Z
Abstract
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.