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Mineralization enhancement of a recalcitrant pharmaceutical polluant in water by advanced oxydation hybrid processes

Water Research, 2009, Vol.43(16), pp.3984-3991 [Peer Reviewed Journal]

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  • Title:
    Mineralization enhancement of a recalcitrant pharmaceutical polluant in water by advanced oxydation hybrid processes
  • Author: Mendez-Arriaga, Fabiola ; Torres-Palma, Ricardo ; Pétrier, Christian ; Esplugas, Santi ; Gimenez, J ; Pulgarin, Cesar
  • Found In: Water Research, 2009, Vol.43(16), pp.3984-3991 [Peer Reviewed Journal]
  • Subjects: Chemical Sciences ; Other ; Engineering
  • Language: English
  • Description: Degradation of the biorecalcitrant pharmaceutical micropollutant ibuprofen (IBP) was carried out by means of several advanced oxidation hybrid configurations. TiO2 photocatalysis, photo-Fenton and sonolysis – all of them under solar simulated illumination – were tested in the hybrid systems: sonophoto-Fenton (FS), sonophotocatalysis (TS) and TiO2/Fe2+/sonolysis (TFS). In the case of the sonophoto-Fenton process, the IBP degradation (95%) and mineralization (60%) were attained with photo-Fenton (FH). The presence of ultrasonic irradiation slightly improves the iron catalytic activity. On the other hand, total removal of IBP and elimination of more than 50% of dissolved organic carbon (DOC) were observed by photocatalysis with TiO2 in the presence of ultrasound irradiation (TS). In contrast only 26% of mineralization was observed by photocatalysis with H2O2 (TH) in the absence of ultrasound irradiation. Additional results showed that, in the TFS system, 92% of DOC removal and complete degradation of IBP were obtained within 240 min of treatment. The advanced oxidation hybrid systems seems to be a promising alternative for full elimination/mineralization for the recalcitrant micro-contaminant IBP.
  • Identifier: ISSN: 0043-1354 ; E-ISSN: 1879-2448 ; DOI: 10.1016/j.watres.2009.06.059

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