Biochar-based CuFe₂O₄ composite material to activate peroxyacetic acid for degradation of tetracycline

ABSTRACT

Using banana peel as raw material, the composite material CuFe₂O₄@BC was synthesised and used it to activate peracetic acid (PAA) to remove tetracycline (TC) in water. The crystal phase, morphology, and chemical bonding of the composite were analysed by XRD, SEM, FTIR, XPS, and other characterisation techniques. In the degradation experiments, CuFe₂O₄@BC showed high catalytic activity and found that the best dosage ratio of CuFe₂O₄@BC and PAA is 300 mg/L: 3 mmol/L, and under this condition, the removal rate of TC in 60 min reached 85%. CuFe₂O₄@BC showed degradation effect in a wide pH range, and the catalytic activity was found to be the best under acidic conditions. At the same time, after five cycles of test, the composite still maintained more than 80% of TC removal rate. The free radical quenching experiments proved that the main active species in the reaction were •OH, CH₃COO• and CH₃COOO•.

KEYWORDS:

• Biochar
• CuFe₂O₄
• peracetic acid
• tetracycline
• AOPs

Acknowledgments

This work was supported by “Qing Lan Project” of Jiangsu Province, “333 Project” of Jiangsu Province.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Author contribution

Jianfeng Ma contributed to te data curation, methodology and formal analysis and writing the original draft; Xiaofeng Wu performed the experiment and the manuscript preparation.

Data availability statement

Data and materials are available upon request.

Ethics approval

We declare that all ethical guidelines for authors have been followed by all authors.

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Additional information

Funding

The work was supported by the Project 333 of Jiangsu Province .