Ozonation and H2O2/UV treatment of clofibric acid in water: a kinetic investigation

The presence of pharmaceuticals or their active metabolites in surface and ground waters has been recently reported as mainly due to an incomplete removal of these pollutants in sewage treatment plants (STP). Advanced oxidation processes may represent a suitable tool to reduce environmental release...

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Bibliographic Details
Published in:Journal of hazardous materials 2003-10, Vol.103 (3), p.233-246
Main Authors: ANDREOZZI, Roberto, CAPRIO, Vincenzo, MAROTTA, Raffaele, RADOVNIKOVIC, Anita
Format: Article
Language:English
Subjects:
Applied sciences
Clofibric Acid - analysis
Exact sciences and technology
Hydrogen Peroxide - chemistry
Industrial Waste
Other wastewaters
Ozone - chemistry
Pharmaceutical Preparations - analysis
Pharmaceutical Preparations - chemistry
Pollution
Sewage - chemistry
Wastewaters
Water Pollutants, Chemical - analysis
Water Purification - methods
Water treatment and pollution
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Summary:The presence of pharmaceuticals or their active metabolites in surface and ground waters has been recently reported as mainly due to an incomplete removal of these pollutants in sewage treatment plants (STP). Advanced oxidation processes may represent a suitable tool to reduce environmental release of these species by enhancing the global efficiency of reduction of pharmaceuticals in the municipal sewage plant effluents. The present work aims at assessing the kinetics of abatement from aqueous solutions of clofibric acid (a metabolite of the blood lipid regulator clofibrate) which has been found in surface, ground and drinking waters. Ozonation and hydrogen peroxide photolysis are capable of fast removal of this species in aqueous solution, with an almost complete conversion of the organic chlorine content into chloride ions for the investigated reaction conditions. A validation of assessed kinetics at clofibric acid concentrations as low as those found in STP effluents is presented for both systems.
ISSN:0304-3894
1873-3336
DOI:10.1016/j.jhazmat.2003.07.001