Photodegradation of Polyphenols and Aromatic Amines in Olive Mill Effluents with Ni Doped C/TiO₂

Table 3

Effect of increasing C/TiO₂/Ni nanocomposite concentrations on the removals of OMW during photocatalytic degradation, under 300 W UV and 30 W sunlight irradiations, at pH = 7.0, and at 25°C, after 60 min ( = 3, mean values).

Parameters (mg L^−1)	Removal efficiencies (%)
	UV light				Sunlight
	C/TiO2/Ni nanocomposites (mg L^−1)				C/TiO2/Ni nanocomposites (mg L^−1)
	100	250	500	1000	100	250	500	1000
CODtotal	57	72	99	94	56	70	96	92
CODdissolved	56	70	99	93	54	67	95	91
CODinert	39	48	73	65	37	46	70	61
Total phenol	61	67	90	89	59	64	88	85
Polyphenols
Catechol	59	66	87	85	57	63	84	82
Tyrosol	58	64	89	86	55	59	87	80
Quercetin	54	67	90	89	52	64	88	79
Caffeic acid	56	63	88	81	55	61	86	76
4-Methyl catechol	50	64	89	83	48	62	85	80
2-PHE	57	65	88	86	54	63	82	82
3-PHE	59	67	86	84	56	62	83	81
TAAs	72	88	96	92	70	87	91	90
TAAs Metabolites
2,4,6 trimethlyaniline	53	64	88	84	51	61	85	81
Aniline	58	63	86	82	57	60	83	79
o-Toluidine	59	67	85	81	58	65	81	77
o-Anisidine	48	65	93	89	46	63	90	86
Dimethylaniline	49	65	95	92	47	60	92	89
Ethylbenzene	56	67	94	90	55	64	91	88
Durene [3,6-bis(dimethylamino)]	50	62	80	78	48	59	78	75