Jump to main content
Jump to site search

Issue 1, 2017
Previous Article Next Article

Emerging pollutant mixture mineralization by TiO2 photocatalysts. The role of the water medium

Author affiliations

Abstract

Pharmaceutics and personal care products (PPCPs) are raising growing concern due to their widespread usage and resistance to conventional remediation techniques. Several of them raise significant health and environmental concerns, especially when present in complex mixtures. Due to their chemical resistance, Advanced Oxidation Processes (AOPs) are needed for their complete removal from surface and wastewaters. In the present work, photocatalysis by titanium dioxide (TiO2) under UV and simulated solar irradiation was adopted to degrade tetracycline hydrochloride, paracetamol, caffeine and atenolol, both as single pollutants and in mixtures. All molecules showed high removal and mineralization degrees. Moreover, no interference effects decreased the efficiency of the processes in the case of pollutant mixtures, achieving 60% of mineralization after 6 h. An immobilized TiO2 system was also developed by depositing titania on titanium meshes. A 50% mineralization degree of the pollutant mixture was obtained after 6 h, revealing a suitable efficiency for field applications. Eventually, the impact of the matrix composition on the photocatalytic efficiency was investigated by studying the reaction both in simulated drinking water and in commercial bottled mineral water. The scavenger role played by HCO3 species appears to be dominant in inhibiting the mineralization.

Graphical abstract: Emerging pollutant mixture mineralization by TiO2 photocatalysts. The role of the water medium

Back to tab navigation

Supplementary files

Publication details

The article was received on 20 Jun 2016, accepted on 25 Oct 2016 and first published on 26 Oct 2016


Article type: Paper
DOI: 10.1039/C6PP00214E
Photochem. Photobiol. Sci., 2017,16, 60-66
  • Open access: Creative Commons BY-NC license
  •   Request permissions

    Emerging pollutant mixture mineralization by TiO2 photocatalysts. The role of the water medium

    L. Rimoldi, D. Meroni, E. Falletta, V. Pifferi, L. Falciola, G. Cappelletti and S. Ardizzone, Photochem. Photobiol. Sci., 2017, 16, 60
    DOI: 10.1039/C6PP00214E

    This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material and it is not used for commercial purposes.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements