Skip to main content
Log in

Catalytic wet oxidation degradation of malachite green with Cu-coated sediment as catalyst: parameter optimization using response surface methodology

  • Original Paper
  • Published:
Euro-Mediterranean Journal for Environmental Integration Aims and scope Submit manuscript

Abstract

This research focuses on developing a supported catalyst by impregnating Moroccan Sebou River sediment with copper (Cu) through a wet impregnation method. Different catalyst loading levels (5, 10, and 15 wt.%) were employed. These catalysts were tested in catalytic wet peroxide oxidation (CWPO) to degrade malachite green (MG) dye using hydrogen peroxide (H2O2) as oxidant. Moreover, the response surface methodology based on the Box–Behnken design (BBD) was used to investigate and optimize the operating parameters affecting the decolorization process, such as temperature, catalytic dose, metal loading, and hydrogen peroxide amount, which were systematically investigated. An MG degradation efficiency of 99.84% was achieved after a reaction time of 60 min under the following conditions: [MG] = 100 mg/L, dose = 0.2 g/L (catalyst 15 wt.%), [H2O2] = 1 mM, and T = 40 °C. The mineralization efficiency reached 74% in terms of chemical oxygen demand (COD) removal. As a result, the solution treated under these optimized conditions showed low toxicity based on the corn grain germination test. Reusability tests on the 15 wt.% catalyst showed a decrease in degradation efficiency by 8.45%, indicating high catalytic stability.

Graphical abstract

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. 5
Fig. 6
Fig. 7
Fig. 8
Scheme 1
Fig. 9
Fig. 10

Similar content being viewed by others

Data availability

All relevant data are within the paper.

References

Download references

Funding

This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Karim Tanji.

Ethics declarations

Conflict of interest

The authors declare no competing interests.

Ethical approval

Not applicable.

Additional information

Responsible Editor: Mohamed Ksibi.

Rights and permissions

Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Mardi, L., Tanji, K., El Gaidoumi, A. et al. Catalytic wet oxidation degradation of malachite green with Cu-coated sediment as catalyst: parameter optimization using response surface methodology. Euro-Mediterr J Environ Integr (2024). https://doi.org/10.1007/s41207-024-00492-5

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s41207-024-00492-5

Keywords

Navigation