Fe3O4 nanoparticles three-dimensional electro-peroxydisulfate for improving tetracycline degradation

Shoufeng Tang; Mengzhen Zhao; Deling Yuan; Xue Li; Zetao Wang; Xiaoyu Zhang; Tifeng Jiao; Jun Ke

doi:10.1016/j.chemosphere.2020.129315

Fe₃O₄ nanoparticles three-dimensional electro-peroxydisulfate for improving tetracycline degradation

Chemosphere. 2021 Apr:268:129315. doi: 10.1016/j.chemosphere.2020.129315. Epub 2020 Dec 16.

Authors

Shoufeng Tang¹, Mengzhen Zhao², Deling Yuan³, Xue Li², Zetao Wang², Xiaoyu Zhang², Tifeng Jiao⁴, Jun Ke⁵

Affiliations

¹ Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, 066004, PR China; State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, PR China.
² State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, PR China.
³ Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, 066004, PR China; State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, PR China. Electronic address: yuandl@ysu.edu.cn.
⁴ Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, 066004, PR China; State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, PR China. Electronic address: tfjiao@ysu.edu.cn.
⁵ School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430074, PR China.

PMID: 33352517
DOI: 10.1016/j.chemosphere.2020.129315

Abstract

In this work, Fe₃O₄ nanoparticle employed as the three-dimensional electrode, were introduced into the electro-oxidation system with peroxydisulfate to improve the tetracycline (TC) degradation. The coprecipitation method prepared Fe₃O₄ was proved to be the irregular sphere-like form through the characterizations of XRD, SEM, N₂ adsorption isotherms, and XPS. By the contrast experiments, the EO-Fe₃O₄-PDS exhibited the outstanding TC degradation capability, which achieved 86.53% after 60 min treatment with current intensity of 20 mA cm^-2, Fe₃O₄ dose of 0.2 g L^-1, PDS amount of 2 mmol L^-1, initial pH 4.5, and TC concentration of 25 mg L^-1. Besides, the influence of current intensity, Fe₃O₄ dosage, PDS concentration, and beginning pH on the TC degradation was investigated systemically. The consecutive five recycles of Fe₃O₄ demonstrated that a favorable stability for the coupling process. The EO-Fe₃O₄-PDS could improve the PDS decomposition and H₂O₂ production. The sulfate and hydroxyl radicals both took charge of the antibiotic degradation as certified by scavenger test. The TC degradation evolution was presented based on the HPLC-MS analyses of degradation byproducts.

Keywords: Electro-oxidation; Fe(3)O(4) nanoparticles; Peroxydisulfate activation; Tetracycline degradation; Three-dimensional electrode.

MeSH terms

Adsorption
Anti-Bacterial Agents
Hydrogen Peroxide
Nanoparticles*
Tetracycline
Water Pollutants, Chemical*

Substances

Anti-Bacterial Agents
Water Pollutants, Chemical
Hydrogen Peroxide
Tetracycline