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Novel magnetic graphoxide/biochar composite derived from tea for multiple SAs and QNs antibiotics removal in water

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Abstract

Antibiotics pollution is an urgent public health issue. Biochar is a kind of promising composite for removal antibiotic in aqueous environment. In this study, a novel magnetic graphoxide/biochar composite (mGO/TBC) was synthesized by simple impregnation method and used as an efficient and recyclable persulfate (PS) activator for degradation and removal of sulfonamides (SAs) and quinolones (QNs) antibiotics. Based on the synergism pre-adsorption and degradation between graphoxide and biochar, the removal rates of mGO/TBC on sarafloxacin hydrochloride, sulfadimethoxine, sulfapyridine, sulfadoxine, sulfamonomethoxine, sulfachloropyridazine, enrofloxacin, and ciprofloxacin were increased above 95%. Moreover, the mGO/TBC could be reused at least seven times after degradation-recovery cycles. Quenching experiment and ESR analysis proved that 1O2, OH, and SO4•− from mGO/TBC/PS system were the primary oxidation active species to degrade SAs and QNs. It is a promising substrate for antibiotic bioremediation with good application prospects.

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Data availability

The datasets used or analyzed during the current study are available from the corresponding author on reasonable request.

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Funding

This work was supported by a grant from the National Key Research and Development Program of China (No. 2017YFC1601101) and the National Natural Science Foundation of China (No. 81773482).

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Wei Pang: conceptualization, data curation, writing—original draft. Yonghui Wang: methodology, investigation. Shuang Li: validation. Yuanyuan Luo: investigation. Jian Hou: formal analysis. Guanyu Wang: resources. Tie Han: supervision. Qingbin Guo: conceptualization, writing—reviewing, and editing. Huanying Zhou: writing—review and editing, Resources, Supervision, Funding acquisition. Zhixian Gao: Conceptualization, Writing- Reviewing and Editing.

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Correspondence to Huanying Zhou.

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Responsible Editor: Tito Roberto Cadaval Jr

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Pang, W., Wang, Y., Li, S. et al. Novel magnetic graphoxide/biochar composite derived from tea for multiple SAs and QNs antibiotics removal in water. Environ Sci Pollut Res 30, 43215–43228 (2023). https://doi.org/10.1007/s11356-023-25298-w

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  • DOI: https://doi.org/10.1007/s11356-023-25298-w

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