Abstract
Degradation of 4-chlorophenol, 2,4-dichlorophenol and 2,4-dichlorophenoxy acetic acid was investigated by wet air oxidation over CexFe1−xO2 (x: 0, 0.25, 0.5, 0.75, 1) nanocatalysts. Complete removal of target pollutants could be effected at atmospheric pressure and near ambient conditions with considerable decrease in TOC and COD. 4-chlorophenol (1000mg/l) was completely degraded with 59.66% TOC and 84.9% COD removal at 40°C over Ce0.75Fe0.25O2 catalyst whereas 2,4-dichlorophenol (1250mg/l) conversion with 74.3% TOC and 93.62% COD removal was observed at 50°C over Ce0.75Fe0.25O2 catalyst. The activity of the catalysts was found to increase on repeated runs.
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