Fe<sub>3</sub>O<sub>4</sub>活化过硫酸盐体系同步去除诺氟沙星和铅

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Abstract This study employed the advanced oxidation process of persulfate, activated with Fe₃O₄ magnetic nanoparticles (Fe₃O₄/PS), for simultaneous removal of NOR (norfloxacin) and Pb(II) in wastewater. The effects of Fe₃O₄ dosage, PS concentration, initial pH value and Pb(II) concentration on the degradation of NOR were investigated. Experimental results indicated that the degradation of NOR followed the pseudo-first-order kinetics. The degradation of NOR and the removal of Pb(II) reached to 90.2% and 99.5%, respectively, under the reaction conditions of temperature of 30℃, initial NOR concentration of 5.0mg/L, Fe₃O₄ dosage of 2.0g/L, PS concentration of 1.5mmol/L, initial pH value of 7.0, and reaction time of 120minutes. Free radical quenching experiments confirmed that SO₄^-· was the dominant free radical in the degradation of NOR. The possible degradation pathways and intermediate products of NOR were inferred using LC-MS. This study indicated that the Fe₃O₄-activated PS oxidation process could be served as a novel technique for the simultaneous removal of organic pollutants and heavy metals.

Key words： NOR(norfloxacin) Pb(II) Fe₃O₄ magnetic nanoparticles persulfate simultaneous removal

Received: 09 July 2021

PACS:

X703.1

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	Articles by authors
	SU Bing-qin
	LIU Yi-qing
	LIN Yu-ting
	WANG Jian
	QUAN Xiao-hui
	LI Rui
	RUI Chuang-xue

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SU Bing-qin,LIU Yi-qing,LIN Yu-ting等. Simultaneous removal of norfloxacin and Pb(II) via Fe₃O₄-activated persulfate oxidation[J]. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(2): 717-727.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2022/V42/I2/717

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