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	Multi-targeted removal of coexisted antibiotics in water by the synergies of radical and non-radical pathways in PMS activation
	Fan, Yu-Han; Li, Yu-Qi; Hayat, Faisal; Liu, Chen; Li, Jun; Chen, Ming1
	2023-01-15
摘要	Various antibiotics often coexist in contaminated water which can pose a threat to the ecological environment and human health. Conventional water treatment technologies generally have low efficiency to simultaneously remove multiple antibiotics. To address this issue, a bimetal composite corncob biochar catalyst (Fe-MOF-CC@MoS2) was explored for the peroxymonosulfate (PMS) activation to degrade various antibiotics simulta-neously in this study. The Fe-MOF-CC@MoS2 was prepared by a simple green hydrothermal carbonization method and characterized. The degradation performance of Fe-MOF-CC@MoS2 for coexisted antibiotics from the aqueous phase was evaluated. The results indicated that the Fe-MOF-CC@MoS2/PMS system exhibited a superior degradation efficiency of antibiotics compared to Fe-MOF-CC/PMS system, due to the acceleration of the Fe2+/ Fe3+ cycling by active Mo4+. Fe-MOF-CC@MoS2/PMS system could simultaneously remove four different types of antibiotics, and the removal efficiencies of tetracycline hydrochloride, ciprofloxacin, nitrofurantoin, and sulfamethoxazole were 96.51 %, 92.30 %, 88.96 %, and 80.76 %, respectively. Electron spin resonance and quenching experiments demonstrated that the cooperation of radical (SO4 center dot-, (OH)-O-center dot and O-center dot(2)-) and non-radical (O-1(2)) in the Fe-MOF-CC@MoS2/PMS system led to 14 times higher degradation rate constant than that in Fe-MOF-CC/ PMS system. In addition, the Fe-MOF-CC@MoS2 presented high removal efficiency (76.54 %) for the antibiotics after five cycles. Moreover, the toxicity of contaminated water after degradation was significantly reduced through the growth of Vigna radiata. Finally, the flowing experiment using Fe-MOF-CC@MoS2/quartz sand column proved that Fe-MOF-CC@MoS2 could effectively activate PMS and remediate water contaminated with four coexisted antibiotics. This study may provide a promising alternative for the multi-targeted removal of coexisted antibiotics from real water, meanwhile recovering resources.
关键词	Multi-targeted removal Hydrothermal carbonization Bimetal biochar composites Peroxymonosulfate Coexisted antibiotics
DOI	10.1016/j.seppur.2022.122475
发表期刊	SEPARATION AND PURIFICATION TECHNOLOGY
ISSN	1383-5866
卷号	305页码:12
通讯作者	Chen, Ming(chenming@cigit.ac.cn)
收录类别	SCI
WOS记录号	WOS:000899893100005
语种	英语