Removal of Petroleum Hydrocarbons from Contaminated Waters Using a Solar Photocatalytic Process

Document Type : پژوهشی

Authors

• Fattah Soroush
• Hossein Ganjidoust
• Bita Ayati

Tarbiat Modares Univ.

10.22067/civil.v29i1.42661

Abstract

Removal of petroleum hydrocarbons from synthetic contaminated water using with photocatalytic process was conducted in the presence of nano TiO2 immobilized on the concrete plates. The solar photoreactor was consisted of storage tank of 60 L with floating pump, cascade system with 5 concrete steps, a 5 L weir on the top of the stairs and metalic chassis. The UV-A radiation of the sunlight was used instead of UV-A lamps as the irradiation source. The optimum parameters were pH of 5, TiO2 mass loading of 60 grm-2, UV equivalent irradiation time of 200 min, initial concentration of 100 mgL-1 and H2O2 concentration of 2000 mgL-1.The results demonstrated that under optimal conditions removal efficiency of chemical oxygen demand (COD), total petroleum hydrocarbons (TPH) and poly aromatic hydrocarbons (PAHs) were 70.48%, 67.63 % and 84.75% respectively. Also the results of GC-FID analysis indicated that most of PAHs were eliminated and only non-toxic aliphatic hydrocarbons were remained.

Keywords

• Solar photoreactor
• TiO2
• Light-Weighted Concrete
• TPH
• PAH
• COD

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