Organic material removal from bilge water by chemical treatment processes


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Öz Ç., Çetin E.

Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi, vol.27, pp.1-8, 2021 (National Refreed University Journal)

  • Publication Type: Article / Article
  • Volume: 27
  • Publication Date: 2021
  • Doi Number: 10.5505/pajes2021.50607
  • Title of Journal : Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi
  • Page Numbers: pp.1-8

Abstract

Uncontrolled discharged of bilge water from sea vessels is one of the major pollutants for marine ecosystem due to its high amount petroleum and oil content. In this research, organic material removal from bilge water by using coagulation – flocculation and Fenton oxidation was investigated. In coagulation-flocculation experiments, the effects of different coagulants and their dosages on COD removal were examined. Ferrous sulphate presented the best performance to remove organic material. The maximum COD removal efficiency was achieved as 40.7 ± 0.7%, and the optimum coagulant dosage was determined as 250 mg L-1 . Regarding Fenton oxidation, different Fe2+ and H2O2 concentrations as well as different Fe2+/H2O2 ratios were tested to identify optimum operational conditions. COD removal efficiency of 59.0 ± 0.2% was achieved at 6 mM Fe2+ ions. The highest COD removal efficiencies were obtained at 30 mM H2O2 and Fe2+/H2O2: 1/5. Despite the fact that Fenton oxidation presented a better performance for organic material removal than coagulationflocculation, COD concentration in the effluent could not meet the discharge limits. Therefore, Fenton oxidation under optimum operational conditions was considered as an effective pre-treatment method to remove organic materials from bilge water.