Articles producció científica> Enginyeria Química

Produced water treatment by advanced oxidation processes

  • Dades identificatives

    Identificador: PC:3502
    Autors:
    Silvia Jiménez, Mario Andreozzi, María M. Micó, Mayra G. Álvarez, Sandra Contreras
    Resum:
    Different Advanced Oxidation Processes (AOPs) such as photocatalysis, Fenton-based processes and ozonation were studied to include one of these technologies within an integrated solution for produced water (PW) polishing. Synthetic PWwas prepared adding toluene, xylene, naphthalene, phenol, acetic and malonic acids to a seawater matrix. Despite that in all AOPs studied in this work BTEX and naphthalene were removed, the efficiency (in terms of TOC removal) of each treatment varied largely. Among these techniques, photocatalysis was found to be the less effective for the treatment of PW, as TOC removals lower than 20% were obtained for the best scenario after 4 h treatment. In the contrary, best results were obtained by ozonation combined with H2O2, where all the organic components were removed, including a high percentage of acetic acid, which was not abated by the rest of the AOPs studied. The optimum conditions for ozonation were 4 g h−1 O3 and 1500 mg L−1 H2O2 at pH 10, where after 2 h a 74% of TOC removal was achieved and the acetic acid elimination was 78%. This condition enabled that ozonation process accounted for the lowest electric energy consumption per order of target compound destruction regarding total organic carbon (TOC).
  • Altres:

    Departament: Enginyeria Química
    Autor/s de la URV: Silvia Jiménez, Mario Andreozzi, María M. Micó, Mayra G. Álvarez, Sandra Contreras
    Codi de projecte: 688989-2
    Paraules clau: Photocatalysis; Photo-Fenton; Sono-Fenton; Ozonation; Acetic acid
    Resum: Different Advanced Oxidation Processes (AOPs) such as photocatalysis, Fenton-based processes and ozonation were studied to include one of these technologies within an integrated solution for produced water (PW) polishing. Synthetic PWwas prepared adding toluene, xylene, naphthalene, phenol, acetic and malonic acids to a seawater matrix. Despite that in all AOPs studied in this work BTEX and naphthalene were removed, the efficiency (in terms of TOC removal) of each treatment varied largely. Among these techniques, photocatalysis was found to be the less effective for the treatment of PW, as TOC removals lower than 20% were obtained for the best scenario after 4 h treatment. In the contrary, best results were obtained by ozonation combined with H2O2, where all the organic components were removed, including a high percentage of acetic acid, which was not abated by the rest of the AOPs studied. The optimum conditions for ozonation were 4 g h−1 O3 and 1500 mg L−1 H2O2 at pH 10, where after 2 h a 74% of TOC removal was achieved and the acetic acid elimination was 78%. This condition enabled that ozonation process accounted for the lowest electric energy consumption per order of target compound destruction regarding total organic carbon (TOC).
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    Adreça de correu electrònic de l'autor: sandra.contreras@urv.cat
    Data d'alta del registre: 2019-05-30
    Pàgina final: 21
    Volum de revista: 666
    Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
    Enllaç font original: https://www.sciencedirect.com/science/article/pii/S0048969719306163
    Programa de finançament: HORIZON 2020
    Referència de l'ítem segons les normes APA: Jiménez, S., Andreozzi, M., Micó, M.M., G. Álvarez, M., Contreras, S. Produced water treatment by advanced oxidation processes. Science of the Total Environment 666 (2019) 12-21
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    DOI de l'article: 10.1016/j.scitotenv.2019.02.128
    Any de publicació de la revista: 2019
    Acció del programa de finançament: INTEGROIL
    Pàgina inicial: 12
  • Paraules clau:

    Photocatalysis; Photo-Fenton; Sono-Fenton; Ozonation; Acetic acid
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