Ultrasound assisted photocatalytic degradation of diclofenac in an aqueous environment.
Diclofenac (DF) is an anti-inflammatory drug found in aqueous environments as a pollutant due to its widespread use. The sonolytic, photocatalytic and sonophotocatalytic degradation of DF using three photocatalysts (TiO(2), ZnO and Fe-ZnO) were studied. The degradation of DF followed first-order like kinetics. The sonophotocatalytic degradation using TiO(2) under UV-vis radiation showed a slight synergistic enhancement in the degradation of the parent compound, whereas a detrimental effect was observed for the mineralization process. In the case of Fe-ZnO, both degradation and mineralization showed near additive effects. A number of degradation products were identified.
Madhavan
Jagannathan
J
Particulate Fluids Processing Centre, School of Chemistry, University of Melbourne, VIC-3010, Australia.
Kumar
Panneer Selvam Sathish
PS
Anandan
Sambandam
S
Zhou
Meifang
M
Grieser
Franz
F
Ashokkumar
Muthupandian
M
D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000032:analysis / Q000737:chemistry*; D004008:Diclofenac / Q000032:analysis / Q000737:chemistry*; D052918:Environmental Restoration and Remediation / Q000379:methods*; D019220:High-Energy Shock Waves; D010782:Photolysis; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000737:chemistry*
D000894:Anti-Inflammatory Agents, Non-Steroidal; D014874:Water Pollutants, Chemical; D004008:Diclofenac