具备微电解特性的改性泡沫铜去除强力霉素

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Abstract

Modified foam copper (MCF) with micro-electrolytic properties was prepared in this study through an improved reduction method by loading nano-zero-valent iron (nZVI) on porous copper foam (CF). The surface morphology and element distribution of CF before and after nZVI loading were analyzed using SEM, SEMMAPPING and EDX. Besides, The study investigated the effects of removal methods, MCF dosages and initial DC concentrations on the degradation of DC with nZVI loading on MCF. The removal efficiency of DC using nZVI with MCF was much better than that without MCF. When DC concentration was 50mg/L, MCF dosage was 4.0g, and the reaction time was 20min, the removal efficiency of DC could reach as high as 99%. In addition, it was found that DC degradation with MCF fitted the pseudo-first-order reaction kinetics, and the reaction rate constant k became larger with the increase of MCF dosage. When the MCF dosage was 5.0g, the maximum k value was 0.0609min^-1. Finally, the mechanism of DC degradation with MCF was explored based on all the results and it provided a certain theoretical basis for MCF practical application.

Key words： copper foam micro-electrolysis nanoscale-zero-valent iron doxycycline

Received: 24 December 2018

PACS:

X703.5

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	Articles by authors
	LIU Yu-zhi
	WANG Chen
	ZOU Dong-lei
	DONG Zhao-jun

Cite this article:

LIU Yu-zhi,WANG Chen,ZOU Dong-lei等. Removal of doxycycline by modified copper foam with micro electrolysis characteristics[J]. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(7): 2864-2870.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2019/V39/I7/2864

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