阴极
电化学
石墨
扫描电子显微镜
矿化(土壤科学)
X射线光电子能谱
化学
阳极
材料科学
左氧氟沙星
化学工程
降级(电信)
核化学
无机化学
电极
有机化学
复合材料
物理化学
工程类
抗生素
氮气
电信
生物化学
计算机科学
作者
Xiaocheng Liu,D. ChangMo Yang,Yaoyu Zhou,Jiachao Zhang,Lin Luo,Sijun Meng,Chen Song,Mengjiao Tan,Zhicheng Li,Lin Tang
出处
期刊:Chemosphere
[Elsevier]
日期:2017-09-01
卷期号:182: 306-315
被引量:176
标识
DOI:10.1016/j.chemosphere.2017.05.035
摘要
The degradation of antibiotic levofloxacin was investigated by dimensionally stable anode as well as modified cathode using low-cost chemical reagents of hydrazine hydrate and ethanol for electro-Fenton in an undivided cell at pH 3.0 under room temperature. Comparison of unmodified and modified cathode was performed. The apparent rate constant of levofloxacin decay was found to be 0.2883 min−1 for graphite felt-10 with the best performance at 200 mA, which is lower than graphite felt at 400 mA. The optimum modified cathode showed a significant improvement of complete mineralization of levofloxacin, reaching a 92% TOC removal at 200 mA for 480 min higher than unmodified one at twice the current. Surface physicochemical properties and morphology were investigated by scanning electron microscope, contact angle and X-ray photoelectron spectroscopy. The electrochemical characterization of hydrogen evolution reaction was adopted to clarify a possible pathway for the higher mineralization of levofloxacin, indicating a potential pilot-scale study to the pollution with the similar structure.
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