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Synergistic degradation of antibiotic norfloxacin in a novel heterogeneous sonochemical Fe0/tetraphosphate Fenton-like system.
Ultrason Sonochem. 2017 Jul; 37:320-327.US

Abstract

In this study, synergistic degradation of antibiotic norfloxacin (NOR) was obtained in a novel sonochemical ultrasound/zero-valent iron/tetraphosphate system (US/ZVI/TPP). Compared to three common organic ligands (EDTA, EDDS, and DTPA), TPP could perform more excellently in activation of O2 to produce reactive oxidative species (ROS) and lead to efficient Fenton-like oxidative degradation of NOR in the sonochemical in situ chemical oxidation (ISCO) system. An optimized initial condition was obtained as 10mg/L NOR, 0.3mM TPP, 1g/L ZVI and initial pH 7, and the US/ZVI/TPP system would effectively degrade NOR with relative low dosage of ZVI and ligand as well as broad pH work range 3-9. It was found that three ROS (OH, O2- and H2O2) instead of OH only would participate in the NOR degradation, while the in situ generation of H2O2 during the series of Fe-TPP reactions should be more critical. Fourteen organic intermediates and four inorganic products were detected during the NOR decomposition, suggesting that two main degradation pathways would occur under OH oxidation via cleavage of the piperazine ring and defluorination of the benzene ring, respectively. Finally, an integrated reaction mechanism in the US/ZVI/TPP system was proposed including solid-liquid interfacial iron corrosion as well as bulk homogenous oxygen activation and Fenton reactions, wherein US would play mechanically and chemically promotional roles. Besides, triple-repeated treatments suggested the relative long-term re-usage of ZVI particles and low effluent dissolved iron (<0.6mg/L).

Authors+Show Affiliations

School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China. Electronic address: zhoutao@hust.edu.cn.School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China.School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China; Key Laboratory of Water and Wastewater Treatment (HUST), MOHURD, Wuhan 430074, PR China.School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China; Key Laboratory of Water and Wastewater Treatment (HUST), MOHURD, Wuhan 430074, PR China.SIIC Environmental Holdings (Wuhan) Co. Ltd., Wuhan 430074, PR China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28427639

Citation

Zhou, Tao, et al. "Synergistic Degradation of Antibiotic Norfloxacin in a Novel Heterogeneous Sonochemical Fe0/tetraphosphate Fenton-like System." Ultrasonics Sonochemistry, vol. 37, 2017, pp. 320-327.
Zhou T, Zou X, Wu X, et al. Synergistic degradation of antibiotic norfloxacin in a novel heterogeneous sonochemical Fe0/tetraphosphate Fenton-like system. Ultrason Sonochem. 2017;37:320-327.
Zhou, T., Zou, X., Wu, X., Mao, J., & Wang, J. (2017). Synergistic degradation of antibiotic norfloxacin in a novel heterogeneous sonochemical Fe0/tetraphosphate Fenton-like system. Ultrasonics Sonochemistry, 37, 320-327. https://doi.org/10.1016/j.ultsonch.2017.01.015
Zhou T, et al. Synergistic Degradation of Antibiotic Norfloxacin in a Novel Heterogeneous Sonochemical Fe0/tetraphosphate Fenton-like System. Ultrason Sonochem. 2017;37:320-327. PubMed PMID: 28427639.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Synergistic degradation of antibiotic norfloxacin in a novel heterogeneous sonochemical Fe0/tetraphosphate Fenton-like system. AU - Zhou,Tao, AU - Zou,Xiaoli, AU - Wu,Xiaohui, AU - Mao,Juan, AU - Wang,Jia, Y1 - 2017/01/16/ PY - 2017/01/03/received PY - 2017/01/12/revised PY - 2017/01/12/accepted PY - 2017/4/22/entrez PY - 2017/4/22/pubmed PY - 2018/7/10/medline KW - In situ chemical oxidation KW - Norfloxacin KW - Oxygen activation KW - Sonochemistry KW - Tetraphosphate KW - Zero valent iron SP - 320 EP - 327 JF - Ultrasonics sonochemistry JO - Ultrason Sonochem VL - 37 N2 - In this study, synergistic degradation of antibiotic norfloxacin (NOR) was obtained in a novel sonochemical ultrasound/zero-valent iron/tetraphosphate system (US/ZVI/TPP). Compared to three common organic ligands (EDTA, EDDS, and DTPA), TPP could perform more excellently in activation of O2 to produce reactive oxidative species (ROS) and lead to efficient Fenton-like oxidative degradation of NOR in the sonochemical in situ chemical oxidation (ISCO) system. An optimized initial condition was obtained as 10mg/L NOR, 0.3mM TPP, 1g/L ZVI and initial pH 7, and the US/ZVI/TPP system would effectively degrade NOR with relative low dosage of ZVI and ligand as well as broad pH work range 3-9. It was found that three ROS (OH, O2- and H2O2) instead of OH only would participate in the NOR degradation, while the in situ generation of H2O2 during the series of Fe-TPP reactions should be more critical. Fourteen organic intermediates and four inorganic products were detected during the NOR decomposition, suggesting that two main degradation pathways would occur under OH oxidation via cleavage of the piperazine ring and defluorination of the benzene ring, respectively. Finally, an integrated reaction mechanism in the US/ZVI/TPP system was proposed including solid-liquid interfacial iron corrosion as well as bulk homogenous oxygen activation and Fenton reactions, wherein US would play mechanically and chemically promotional roles. Besides, triple-repeated treatments suggested the relative long-term re-usage of ZVI particles and low effluent dissolved iron (<0.6mg/L). SN - 1873-2828 UR - https://www.unboundmedicine.com/medline/citation/28427639/Synergistic_degradation_of_antibiotic_norfloxacin_in_a_novel_heterogeneous_sonochemical_Fe0/tetraphosphate_Fenton_like_system_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1350-4177(17)30026-3 DB - PRIME DP - Unbound Medicine ER -