Skip to main content
Log in

Evaluation of heterogeneous catalytic ozonation process for diclofenac degradation in solutions synthetically prepared

  • Advanced Oxidation Technologies: State-of-the-Art in Ibero-American Countries
  • Published:
Environmental Science and Pollution Research Aims and scope Submit manuscript

Abstract

Sodium diclofenac (DCF) is a common analgesic and anti-inflammatory drug, which has become an environmental problem due to its growth and accumulation into water bodies. In this work, commercial (with excipients) and analytical (pure) DCF mineralization was studied by means of heterogeneous catalytic ozonation. The process was carried out with magnetite (Fe3O4) as a catalyst, which preserves its physical and chemical properties during the process. The best results of mineralization were obtained after a 40-min treatment of 35 mg/L analytical DCF solution, with a 0.5 g/L catalyst concentration. These results showed the highest organic load decrease, measured as dissolved organic carbon (DOC) and chemical oxygen demand (COD), with 94 and 89%, respectively. In addition, the percentage of organic load decrease was compared between the conventional and the catalyzed process. Besides, reaction products were identified by gas chromatography–mass spectrometry (GC-MS) and the catalytic properties were identified by Mössbauer spectroscopy, which showed the catalyst maintained its nature after the process. Finally, the results obtained show that the heterogeneous catalytic process could be an efficient degradation treatment for emerging contaminants such as DCF.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9

Similar content being viewed by others

References

Download references

Acknowledgements

The authors thank the investigation group of Procesos Avanzados para Tratamientos Químicos y Biológicos (GAOX).

Funding

This study received financial and scientific support from Laboratorio de Investigación en Catálisis Aplicada y Procesos (LICAP) from Universidad del Valle, Cali, Colombia.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Jenny Castro.

Additional information

Responsible editor: Vítor Pais Vilar

Electronic supplementary material

ESM 1

(DOCX 487 kb)

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Castro, J., Paz, S., Mena, N. et al. Evaluation of heterogeneous catalytic ozonation process for diclofenac degradation in solutions synthetically prepared. Environ Sci Pollut Res 26, 4488–4497 (2019). https://doi.org/10.1007/s11356-018-2582-1

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11356-018-2582-1

Keywords

Navigation