Degradation of tetracycline by activating persulfate using biochar-based CuFe2O4 composite

Wei Zhang; Shijun Feng; Jianfeng Ma; Fang Zhu; Sridhar Komarneni

doi:10.1007/s11356-022-20500-x

Degradation of tetracycline by activating persulfate using biochar-based CuFe₂O₄ composite

Environ Sci Pollut Res Int. 2022 Sep;29(44):67003-67013. doi: 10.1007/s11356-022-20500-x. Epub 2022 May 5.

Authors

Wei Zhang¹, Shijun Feng¹, Jianfeng Ma², Fang Zhu¹, Sridhar Komarneni³

Affiliations

¹ School of Environmental and Safety Engineering, Changzhou University, Jiangsu, 213164, China.
² School of Environmental and Safety Engineering, Changzhou University, Jiangsu, 213164, China. jma@zju.edu.cn.
³ Department of Ecosystem Science and Management and Materials Research Institute, 204 Energy and the Environment Laboratory, The Pennsylvania State University, University Park, State College, PA, 16802, USA. sxk7@psu.edu.

PMID: 35513627
DOI: 10.1007/s11356-022-20500-x

Abstract

Biochar derived from Lentinus edodes (LBC) and CuFe₂O₄ (CuFe₂O₄@LBC) composites were prepared by the hydrothermal method, and were applied to activate persulfate (PDS) for degrading tetracycline (TC) in a wide pH range. The CuFe₂O₄@LBC composites were characterized by XRD, FTIR, SEM, and XPS. LBC-derived biochars greatly reduced the aggregation of CuFe₂O₄ particles and enhanced the catalytic performance of CuFe₂O₄. CuFe₂O₄@LBC catalyst could remove 85% of tetracycline within 100 min under visible light. In addition, the removal rate of TC reached 76% after five cycles, indicating that the composite had good stability and reusability. Simple classical quenching experiments suggested that the degradation of TC could be mainly attributed to •OH and •S [Formula: see text].

Keywords: Biochar; CuFe2O4 composite; Peroxydisulfate; Photocatalysis; Tetracycline.

MeSH terms

Anti-Bacterial Agents
Catalysis
Charcoal* / chemistry
Tetracycline* / chemistry

Substances

Anti-Bacterial Agents
biochar
Charcoal
Tetracycline