Skip to main content

Advertisement

Log in

Refractory organic compounds in coal chemical wastewater treatment by catalytic ozonation using Mn-Cu-Ce/Al2O3

  • Research Article
  • Published:
Environmental Science and Pollution Research Aims and scope Submit manuscript

Abstract

A composite Mn-Cu-Ce tri-metal oxide supported on γ-Al2O3 (Mn-Cu-Ce/Al2O3) catalyst was prepared by an impregnation-calcination method and investigated in the catalytic ozonation treatment of real coal chemical wastewater (CCW). The catalyst was characterized by XRD, SEM, TEM, XRF, BET, and XPS techniques. The results showed that Mn, Cu, and Ce metal oxides were evenly distributed on the Al2O3 surface and the catalyst maintained a large surface area and a high pore volume compared with the pristine Al2O3. The synergy between Mn, Cu, and Ce oxides greatly enriched the catalytic active sites and enhanced the ozonation performance. The catalytic ozonation process with Mn-Cu-Ce/Al2O3 increased the removal rate of total organic carbon (TOC) by 31.6% compared with ozonation alone. The ketones, aromatic compounds, phenols, and nitrogen-containing heterocyclic compounds in CCW have been effectively degraded and mineralized by Mn-Cu-Ce/Al2O3 catalytic ozonation process, and its biodegradability has also been significantly improved. The experimental results of ∙OH scavengers revealed that the mechanism of Mn-Cu-Ce/Al2O3 catalytic ozonation was to promote the generation of ∙OH radicals. The catalytic activity of Mn-Cu-Ce/Al2O3 was only a slight decrease in six consecutive catalytic ozonation treatments, showing good stability. Therefore, Mn-Cu-Ce/Al2O3 can be used as a candidate catalyst for the advanced treatment of refractory organic wastewaters upon catalytic ozonation.

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
Fig. 10
Fig. 11
Fig. 12
Fig. 13

Similar content being viewed by others

Data availability

The datasets used and analyzed during the current study can be obtained from the corresponding author upon reasonable request.

References

Download references

Acknowledgements

The authors sincerely acknowledge the Test and Analysis Center of Ningxia University for providing analysis equipment for this research.

Funding

This project was financially supported by The East-West Cooperation Project of Ningxia Key R&D Plan (2017BY064), Project of Ningxia Key R&D Plan (2020YCZX), and National First-rate Discipline Construction Project of Ningxia (NXYLXK2017A04).

Author information

Authors and Affiliations

Authors

Contributions

ZKH was responsible for conducting the experiment and writing the manuscript. LF and GSY analyzed the experimental results. ZL revised the manuscript. MYL directed the research, acquired funding, and reviewed the manuscript. All authors contributed to the analysis and writing of the manuscript.

Corresponding author

Correspondence to Yu-Long Ma.

Ethics declarations

Ethics approval and consent to participate

Not applicable.

Consent for publication

Not applicable.

Competing interests

The authors declare no competing interests.

Additional information

Responsible Editor: Ricardo Torres-Palma

Publisher’s note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Supplementary information

ESM 1

(DOCX 44 kb).

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Zhao, KH., Ma, YL., Lin, F. et al. Refractory organic compounds in coal chemical wastewater treatment by catalytic ozonation using Mn-Cu-Ce/Al2O3. Environ Sci Pollut Res 28, 41504–41515 (2021). https://doi.org/10.1007/s11356-021-13629-8

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11356-021-13629-8

Keywords

Navigation