SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2015, Vol. 23 ›› Issue (1): 296-302.DOI: 10.1016/j.cjche.2014.11.011

• 能源、资源与环境技术 • 上一篇    下一篇

Intensification of levofloxacin sono-degradation in a US/H2O2 system with Fe3O4 magnetic nanoparticles

HongWei1, Da Hu1,2, Jie Su1, Kebin Li3   

  1. 1 State Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi'an University of Technology, Xi'an 710048, China;
    2 China Huadian Electric Power Research Institute, Hangzhou 310030, China;
    3 Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, School of Chemistry and Material Science, Northwest University, Xi'an 710069, China
  • 收稿日期:2013-12-10 修回日期:2014-06-11 出版日期:2015-01-28 发布日期:2015-01-24
  • 通讯作者: Hong Wei
  • 基金资助:

    Supported by the National Natural Science Foundation of China (51009115), Shaanxi Provincial Department of Education Key Laboratory Project (13JS067), the Hall of Shaanxi Province Science and Technology (2013JK0881), the Research Plan Project of Water Resources Department of Shaanxi Province (2013slkj-07) and the Innovation of Science and Technology Fund of Xi'an University of Technology (211302).

Intensification of levofloxacin sono-degradation in a US/H2O2 system with Fe3O4 magnetic nanoparticles

HongWei1, Da Hu1,2, Jie Su1, Kebin Li3   

  1. 1 State Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi'an University of Technology, Xi'an 710048, China;
    2 China Huadian Electric Power Research Institute, Hangzhou 310030, China;
    3 Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, School of Chemistry and Material Science, Northwest University, Xi'an 710069, China
  • Received:2013-12-10 Revised:2014-06-11 Online:2015-01-28 Published:2015-01-24
  • Contact: Hong Wei
  • Supported by:

    Supported by the National Natural Science Foundation of China (51009115), Shaanxi Provincial Department of Education Key Laboratory Project (13JS067), the Hall of Shaanxi Province Science and Technology (2013JK0881), the Research Plan Project of Water Resources Department of Shaanxi Province (2013slkj-07) and the Innovation of Science and Technology Fund of Xi'an University of Technology (211302).

摘要: Fe3O4 magnetic nanoparticles (MNPs) were synthesised, characterised, and used as a peroxidase mimetic to accelerate levofloxacin sono-degradation in an ultrasound (US)/H2O2 system. The Fe3O4 MNPs were in nanometre scale with an average diameter of approximately 12 to 18 nm. The introduction of Fe3O4 MNPs increased levofloxacin sono-degradation in the US/H2O2 system. Experimental parameters, such as Fe3O4 MNP dose, initial solution pH, and H2O2 concentration, were investigated by a one-factor-at-a-time approach. The results showed that Fe3O4 MNPs enhanced levofloxacin removal in the pH range from 4.0 to 9.0. Levofloxacin removal ratio increased with Fe3O4 MNP dose up to 1.0 g·L-1 and with H2O2 concentration until reaching the maximum.Moreover, three main intermediate compounds were identified by HPLC with electrospray ionisation tandem mass spectrometry, and a possible degradation pathway was proposed. This study suggests that combination of H2O2, Fe3O4 MNPs and US is a good way to improve the degradation efficiency of antibiotics.

关键词: Fe3O4 magnetic nanoparticles, H2O2, Levofloxacin, Sonolysis, HPLC/MS/MS, Degradation pathway

Abstract: Fe3O4 magnetic nanoparticles (MNPs) were synthesised, characterised, and used as a peroxidase mimetic to accelerate levofloxacin sono-degradation in an ultrasound (US)/H2O2 system. The Fe3O4 MNPs were in nanometre scale with an average diameter of approximately 12 to 18 nm. The introduction of Fe3O4 MNPs increased levofloxacin sono-degradation in the US/H2O2 system. Experimental parameters, such as Fe3O4 MNP dose, initial solution pH, and H2O2 concentration, were investigated by a one-factor-at-a-time approach. The results showed that Fe3O4 MNPs enhanced levofloxacin removal in the pH range from 4.0 to 9.0. Levofloxacin removal ratio increased with Fe3O4 MNP dose up to 1.0 g·L-1 and with H2O2 concentration until reaching the maximum.Moreover, three main intermediate compounds were identified by HPLC with electrospray ionisation tandem mass spectrometry, and a possible degradation pathway was proposed. This study suggests that combination of H2O2, Fe3O4 MNPs and US is a good way to improve the degradation efficiency of antibiotics.

Key words: Fe3O4 magnetic nanoparticles, H2O2, Levofloxacin, Sonolysis, HPLC/MS/MS, Degradation pathway