Catalytic Ozonation of Phenolic Wastewater: Identification and Toxicity of Intermediates

<table>GC/MS chromatogram of phenol solution after being treated by COP for 15 min (peaks 1 and 2: lower carboxylic acids; peak 3: oxalic acid; peak 4: phenol; peak 5: 1,2-dihydroxy benzene; peak 6: 1,4-dihydroxy benzene; peak 7: 4-hydroxy-benzoic acid; peak 8: propylphenol; peak 9: phenoxyphenol), [phenol]<sub><i>o</i></sub> = 500 mg/L; initial pH of 8 : 0.</table>

Journal of Engineering

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Figure 6

Figure 6: Catalytic Ozonation of Phenolic Wastewater: Identification and Toxicity of Intermediates 