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

Table 1

Characterization values of OMW at pH = 4.5 ( = 3, mean values).

Parameters	Values
	Minimum	Medium	Maximum
pH0	4	4.4	4.8
DO0 (mg L^−1)	0.01	0.06	0.11
ORP (mV)	+122	+128.5	+135
TSS (mg L^−1)	55.1	57.65	60.2
CODtotal (mg L^−1)	99130	112270	125410
CODdis (mg L^−1)	87200	102275	117350
CODinert (mg L^−1)	32460	57230	82000
BOD5 (mg L^−1)	64500	82030	99560
BOD5/CODdis	0.3	0.6	0.9
Total N (mg L^−1)	198	259	320
NH4-N (mg L^−1)	25.2	32.2	39.1
NO3-N (mg L^−1)	42	55	68
NO2-N (mg L^−1)	19.3	24.2	29.1
Total P (mg L^−1)	496	638.7	781.4
PO4-P (mg L^−1)	352	456.1	560.1
Phenol metabolites (mg L^−1)
Catechol	3	16	29
4-Methyl catechol	7	19	31
2-PHE	2	5	8
3-PHE	2	9	16
TAAs (mg L^−1)	1240	1905	2570
Individual TAAs (mg L^−1)
2,4,6-trimethylaniline	49	120	190
Aniline	42	108	174
o-Toluidine	27	94	161
o-Anisidine	48	92	135
Dimethylalanine	11	51	90
Ethylbenzene	20	71	122
Durene [3,6-bis(dimethylamino)]	34	100	123