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Preparation of heterogeneous Fenton catalyst γ-Cu-Ce-Al2O3 and the evaluation on degradation of phenol

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Abstract

Traditional Fenton reagents are less effective for industrial wastewater treatment because they are active in a narrow pH range, precipitate and become inactive, and are difficult to recover. In this study, a heterogeneous Fenton catalyst, γ-Cu-Ce-Al2O3, was prepared by the sol-gel method and evaluated for the treatment of phenol-containing water. The optimal mix of γ-Cu-Ce-Al2O3 includes a Cu content of 5 wt% and a molar ratio between Cu and Ce of 2:1. The catalyst was prepared by continuously stirring the solution for 24 h and heating to 550 °C for 6 h. The Fenton catalyst was tested with hydrogen peroxide for phenol degradation. An initial phenol concentration of 100 mg/L was removed with 95% efficiency. Additionally, the catalyst was demonstrated to be effective for reuse up to five times with an overall removal rate of 72.3%. The test conditions were based on a catalyst dosage of 1.6 g/L, a hydrogen peroxide dosage of 200 mmol/L, a reaction temperature of 40 °C, an initial pH of 7.0 ± 0.05, and a reaction time of 120 min.

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Acknowledgments

We thank Dr. Eric Evans, from HDR Engineering, for assistance with academic writing and comments that greatly improved the manuscript.

Funding

This work was supported by the National Natural Science Foundation of China (Grant No. 51878394), the State Key Laboratory of Environmental Chemistry and Ecotoxicology, the Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences (Grant No. KF2018-12), the Major State Basic Research Development Program of Shandong (Grant No. 2018GSF117003), and the Shandong Key Laboratory of Water Pollution Control and Resource Reuse (Grant No. 2019KF14).

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Correspondence to Hongbo Wang or Ning Wang.

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Li, M., Gao, X., Liu, H. et al. Preparation of heterogeneous Fenton catalyst γ-Cu-Ce-Al2O3 and the evaluation on degradation of phenol. Environ Sci Pollut Res 27, 21476–21486 (2020). https://doi.org/10.1007/s11356-020-08648-w

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  • DOI: https://doi.org/10.1007/s11356-020-08648-w

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