Sequential biological and photocatalysis based treatments for shipboard slop purification: A pilot plant investigation

Leonardo Palmisano, Vittorio Loddo, Michele Torregrossa, Santo Fabio Corsino, Gaspare Viviani, Francesco Parrino, Marianna Bellardita, Michele Torregrossa, Gaspare Viviani, Bellardita, Francesco Parrino, Vittorio Loddo, Corsino, Palmisano

Risultato della ricerca: Article

Abstract

This study investigated the treatment of a shipboard slop containing commercial gasoline in a pilot plant scale consisting of a membrane biological reactor (MBR) and photocatalytic reactor (PCR) acting in series. The MBR contributed for approximately 70% to the overall slop purification. More precisely, the biological process was able to remove approximately 40%, on average, of the organic pollution in the slop. Nevertheless, the membrane was capable to retain a large amount of organic molecules within the system, amounting for a further 30% of the influent total organic content removal. However, this affected the membrane fouling, thus resulting in the increase of the pore blocking mechanism that accounted for approximately 20% to the total resistance to filtration (2.85∙10 13 m −1 ), even if a significant restoration of the original membrane permeability was obtained after chemical cleanings. On the other hand, the biological treatment produced a clear solution for the photocatalytic system, thereby optimizing the light penetration and generation of highly oxidizing active oxygen species that enabled the degradation of bio-recalcitrant compounds. Indeed, low total organic carbon (TOC) values (<10 mg L −1 ) were achieved in the output of the photocatalytic reactor by means of only 60 Einstein (E) of cumulative impinging energy after the addition of K 2 S 2 O 8 . Overall, coupling the two processes enabled very high TOC removal (ca. 95%).
Lingua originaleEnglish
pagine (da-a)288-296
Numero di pagine9
RivistaProcess Safety and Environmental Protection
Volume125
Stato di pubblicazionePublished - 2019

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Safety, Risk, Reliability and Quality

Cita questo