2012•Environmental ChemistryRequires access

UV/H_2O_2/TiO_2 catalytic oxidation of polycyclic aromatic hydrocarbons in oilfield produced water

Zhang Xiaofei, Nl A

Abstract

It is challenging to remove a variety of polycyclic aromatic hydrocarbons(PAHs) in the produced water generated from oil and gas production.This paper selected phenanthrene and fluorene as the studying objects,focused on the UV/H2O2/TiO2 method and the treatment efficiency for PAHs.We investigated the influence of the dosage of TiO2 and H2O2,pH and UV(254 nm) irradiation time on phenanthrene and fluorene removal in the water samples.The results showed that the optimal treatment conditions for phenanthrene and fluorene removal(initial concentration of 1000 μg · L-1) were determined as TiO2 dosage of 2.2 g · L-1,H2O2 dosage of 0.12 mmol · L-1,pH value of 7.0,exposure time of 1.5 h.

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Key concepts: Phenanthrene, Fluorene, Chemistry, Polycyclic aromatic hydrocarbon, Environmental chemistry, Catalysis, Nuclear chemistry, Organic chemistry