Catalytic Ozonation of Phenolic Wastewater: Identification and Toxicity of Intermediates

Table 1

Experimental steps and conditions.

Phase	Experiment	Conditions
		𝐶Phenol (mg/L)	𝐶Catalyst (g/L)	pH	Time (min)
1	Effect of pH	100	0.5	4–10	5
2	Effect of initial concentration of phenol	50–1500	2	8^a	0–60
3	Phenol and COD removal at optimal condition	500	2	8	0–60
4	Toxicity of effluents	200	2	8	0, 10, 30 and 60
5	Identification of intermediates	500	2	8	15

aOptimum pH in which the maximum phenol removal was obtained in COP.