Journal
PLASMA SCIENCE & TECHNOLOGY
Volume 21, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2058-6272/aaeba6
Keywords
dielectric barrier discharge plasma; Iron and manganese oxides; oxytetracycline decomposition; supported granular activated carbon
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Funding
- National Natural Science Foundation of China [51608468]
- High School Science and Technology Research Project of Hebei Province [QN2018258]
- China Postdoctoral Science Foundation [2015M580216, 2016M601285]
- Hebei Province Preferred Postdoctoral Science Foundation [B2016003019]
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A catalytic approach using a synthesized iron and manganese oxide-supported granular activated carbon (Fe-Mn GAC) under a dielectric barrier discharge (DBD) plasma was investigated to enhance the degradation of oxytetracycline (OTC) in water. The prepared Fe-Mn GAC was characterized by x-ray diffraction and scanning electron microscopy, and the results showed that the bimetallic oxides had been successfully spread on the GAC surface. The experimental results showed that the DBD + Fe-Mn GAC exhibited better OTC removal efficiency than the sole DBD and DBD + virgin GAC systems. Increasing the fabricated catalyst and discharge voltage was favorable to the antibiotic elimination and energy yield in the hybrid process. The coupling process could be elucidated by the ozone decomposition after Fe-Mn GAC addition, and highly hydroxyl and superoxide radicals both play significant roles in the decontamination. The main intermediate products were identified by HPLC-MS to study the mechanism in the collaborative system.
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