Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi

Yazarlar: Gizem EKER

Konular:Çevre Mühendisliği

DOI:10.28948/ngumuh.443178

Anahtar Kelimeler:Soil,Ultraviole-A,Temperature,Titanium dioxide

Özet: Soil is the most important reserve area for the polyaromatic hydrocarbons (PAHs) in the terrestrial environment. Soil has a great affinity to hydrophobic organic pollutants like PAHs and acts as a natural receiving environment for these pollutants. In this study, the removal of PAHs from soils with ultraviolet (UV) radiation technology was investigated. In this context, UV-A rays were used and the effects of temperature and TiO2 use on the removal of PAHs were determined. Soil samples were taken from a cement factory (exposed to intense PAH pollution) located in Bursa. The amount of PAH in the soil was reduced by up to 89% by UV-A application. After the application of UVA-TiO2, the contamination of PAH in the soil was completely eliminated. Maximum ∑12 PAH removal was obtained with 10% TiO2 addition (100% removal) at 18 oC and 1% TiO2 addition (95% removal) at 30 oC. It has been determined that at 30 °C, the TiO2 dose above 1% has no significant contribution to the photo-degradation process. With the increase in temperature, more PAHs have been removed from the environment, and it has been concluded that the possible increase in evaporation and reaction rates caused this.

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