Effect of Ultrasonic Irradiation on the Treatment of Poly-Aromatic Substances (PAHs) from a Petrochemical Industry Wastewater

SPONZA D. T., Oztekin R.

OZONE-SCIENCE & ENGINEERING, cilt.33, sa.3, ss.194-210, 2011 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 33 Sayı: 3
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1080/01919512.2011.554135
  • Dergi Adı: OZONE-SCIENCE & ENGINEERING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.194-210
  • Anahtar Kelimeler: Acute Toxicity, Bicarbonate Ion, Daphnia magna, Dissolved Oxygen, Nitrogen Gas, Petrochemical, Polycyclic Aromatic Hydrocarbons, Sonication, Titanium Dioxide, TITANIUM-DIOXIDE, SONOCHEMICAL DEGRADATION, HYDROCARBONS, SONICATION, PHENANTHRENE, PRETREATMENT, REMOVALS, TOXICITY, TIO2
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

The effects of sonication time, nitrogen, N2(g), increasing temperature, dissolved oxygen (DO) and titanium dioxide (TiO2) concentrations on the sonodegradation of polyaromatic hydrocarbons (PAHs) in petrochemical wastewaters were investigated. Sonication alone without N2(g), DO and TiO2 provided 80% maximum PAH yields at 2 5 degrees C after 150 min. This PAH yield increased to 89-95% at 60 degrees C after 150 min sonication. The contribution of DO, N2(g) and TiO2 on the PAH removal was not significant compared to the control. In the presence of HCO3-, the degradation of hydrophobic PAH dibenz[a,h]anthracene (DahA)was suppressed in the acceleration step of the sonication. Maximum acute toxicity removal was reached by 30 min N2(g) sparging, 4 mg/L DO and by 0.1 mg/L TiO2 after 150 min sonication.