Photodegradation of the herbicide azimsulfuron using nanocrystalline titania films as photocatalyst and low intensity Black Light radiation or simulated solar radiation as excitation source.
Aqueous solutions of the herbicide azimsulfuron have been treated by a photocatalytic process employing titania nanocrystalline films as photocatalyst. Results showed that solutions of this herbicide at maximum possible concentration can be photodegraded in a time of a few hours by using low intensity UVA radiation comparable with that of the UVA of solar noon. Similar results have also been obtained with simulated solar radiation. Thus heterogeneous photocatalysis can be employed for the treatment of waters polluted by this herbicide.
Pelentridou
Katerina
K
Engineering Science Department, University of Patras, 26500 Patras, Greece.
Stathatos
Elias
E
Karasali
Helen
H
Lianos
Panagiotis
P
D002384:Catalysis; D006540:Herbicides / Q000528:radiation effects; D008027:Light; D053758:Nanoparticles; D010782:Photolysis / Q000187:drug effects*; D011720:Pyrazoles / Q000528:radiation effects*; D013449:Sulfonamides / Q000528:radiation effects*; D014025:Titanium / Q000494:pharmacology*; D014873:Water Pollutants / Q000528:radiation effects
D006540:Herbicides; D011720:Pyrazoles; D013449:Sulfonamides; D014873:Water Pollutants; C009495:titanium dioxide; D014025:Titanium; C487586:azimsulfuron