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

doi:10.1016/j.cjche.2014.11.011

Chin.J.Chem.Eng. ›› 2015, Vol. 23 ›› Issue (1): 296-302.DOI: 10.1016/j.cjche.2014.11.011

• ENERGY, RESOURCES AND ENVIRONMENTAL TECHNOLOGY • Previous Articles Next Articles

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

HongWei¹, Da Hu^1,2, Jie Su¹, Kebin Li³

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:2015-01-24 Published:2015-01-28
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).

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

HongWei¹, Da Hu^1,2, Jie Su¹, Kebin Li³

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

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).

Abstract

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

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

HongWei, Da Hu, Jie Su, Kebin Li . Intensification of levofloxacin sono-degradation in a US/H₂O₂ system with Fe₃O₄ magnetic nanoparticles[J]. Chin.J.Chem.Eng., 2015, 23(1): 296-302.

HongWei, Da Hu, Jie Su, Kebin Li . Intensification of levofloxacin sono-degradation in a US/H₂O₂ system with Fe₃O₄ magnetic nanoparticles[J]. Chinese Journal of Chemical Engineering, 2015, 23(1): 296-302.

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

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

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