Strengthening decomposition of oxytetracycline in DBD plasma coupling with Fe-Mn oxide-loaded granular activated carbon

Shoufeng TANG (唐首锋); Xue LI (李雪); Chen ZHANG (张晨); Yang LIU (刘洋); Weitao ZHANG (张维涛); Deling YUAN (袁德玲)

doi:10.1088/2058-6272/aaeba6

Plasma Science and Technology > 2019 > 21(2): 25504-025504. > DOI: 10.1088/2058-6272/aaeba6

Shoufeng TANG (唐首锋), Xue LI (李雪), Chen ZHANG (张晨), Yang LIU (刘洋), Weitao ZHANG (张维涛), Deling YUAN (袁德玲). Strengthening decomposition of oxytetracycline in DBD plasma coupling with Fe-Mn oxide-loaded granular activated carbon[J]. Plasma Science and Technology, 2019, 21(2): 25504-025504. DOI: 10.1088/2058-6272/aaeba6

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Strengthening decomposition of oxytetracycline in DBD plasma coupling with Fe-Mn oxide-loaded granular activated carbon

Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, People’s Republic of China

Funds: This work was supported by National Natural Science Foundation of China (No. 51608468), High School Science and Technology Research Project of Hebei Province (No. QN2018258), China Postdoctoral Science Foundation (Nos. 2015M580216 and 2016M601285), and Hebei Province Preferred Postdoctoral Science Foundation (No. B2016003019).

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Received Date: August 19, 2018

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Abstract

Abstract

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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