Photodegradation of Oily Waste Water Using Nano-TiO₂

Abstract

Photocatalytic degradation of oily wastewater using Nano-TiO2 was studied.First Nano-TiO2 powder with photocatalytic activity were prepared by sol-gel progress.Second the photo-degradation of oily wastewater on titanium dioxide was investigated.The reaction also features the photocatalytic activity of Nano-TiO2. Finally, the mechanisms of photo-oxidation were discussed.

Photochemistry of oil in marine systems: developments since the Deepwater Horizon spill

“…For studying the role of photocatalysts in degradation of oil-contaminated water, Zhang et al 67 used a photocatalytic reactor system to conduct the photodegradation experiment. The authors demonstrated that when the calcination temperature exceeded 400 °C, some of the anatase TiO 2 particles transformed into the rutile phase, which has poor photocatalytic properties, leading to a significant decrease in the photocatalytic activity of nano-TiO 2 .…”

“…However, the UV radiation used in this study includes regions outside of the solar spectrum. Zhang et al 67 utilized UV radiation to investigate the photodegradation of oily wastewater in the presence of nano-TiO 2 with the use of a 500 W mercury lamp. To keep the lamp cool, it was housed inside a quartz tube and surrounded by a circulating water jacket.…”