Chemical Oxidation for Oil Separation from Oilfield Produced Water under UV Irradiation Using Titanium Dioxide as a Nano-Photocatalyst by Batch and Continuous Techniques

Table 1

Constituents of oilfield produced water used in this study.

Constituent	Concentration mg·l^−1
Oil	59.55
pH	6.86
TDS	137800
TSS	21
Calcium	7840
Magnesium	2352
HCO3	263
Dissolved oxygen content	0.07
Manganese	3
Zinc	1
Chrome	0.2
Iron	0.35
Sulphate	3763
Chloride	107192
Nickel	0.2