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Removal of Emerging Contaminants in Wastewater by Sonolysis, Photocatalysis and Ozonation

  • Authors (legacy)
    Corresponding: Vincenzo Naddeo
    Co-authors: Fraiese A., Naddeo V., Uyguner-Demirel C.S., Prado M., Cesaro A., Zarra T., Liu H., Belgiorno V. and Ballesteros Jr.F.
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  • gnest_02625_published.pdf
  • Paper ID
    gnest_02625
  • Paper status
    Published
  • Date paper submitted
  • Date paper accepted
  • Date paper online
DOI
https://doi.org/10.30955/gnj.002625
Abstract

Three different advanced oxidation processes (AOPs) were applied to investigate the removal of emerging contaminants (ECs) i.e. sulfamethoxazole (SMX), diclofenac (DCF) and carbamazepine (CBZ) in synthetically prepared solutions. The degradation of these substances was carried out by ozonation, sonolysis and photocatalytic oxidation, as well as by different combinations of these processes. The objectives of this work were to evaluate the removal efficiency in each AOP and to assess the performance variation of sonolysis in combination with other AOPs. The best performances were achieved by sonocatalysis, which resulted in the removal of the selected pharmaceuticals in the range between 37% and 47%. Under similar experimental conditions, the removal of the selected ECs by single compounds by ozonation was slightly lower than the removal of respective compounds in the mixture. Moreover, pseudo first-order removal rate constants of photocatalytic mineralization were determined as 9.33×10-2, 4.90×10-3, 1.06×10-2 min-1 for SMX, DCF and CBZ, respectively.

Keywords
Advanced oxidation processes Catalyst Ozone ultrasound UV irradiation
Cite this article
Naddeo, V. et al. (2019) “Removal of Emerging Contaminants in Wastewater by Sonolysis, Photocatalysis and Ozonation”, Global NEST Journal, 21(2). Available at: https://doi.org/10.30955/gnj.002625.
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  • gnest_02625_published.pdf