Plasma-catalytic degradation of tetracycline hydrochloride over Mn/γ-Al2O3 catalysts in a dielectric barrier discharge reactor

Baowei WANG (王保伟); Chao WANG (王超); Shumei YAO (姚淑美); Yeping PENG (彭叶平); Yan XU (徐艳)

doi:10.1088/2058-6272/ab079c

Plasma Science and Technology > 2019 > 21(6): 65503-065503. > DOI: 10.1088/2058-6272/ab079c

Baowei WANG (王保伟), Chao WANG (王超), Shumei YAO (姚淑美), Yeping PENG (彭叶平), Yan XU (徐艳). Plasma-catalytic degradation of tetracycline hydrochloride over Mn/γ-Al₂O₃ catalysts in a dielectric barrier discharge reactor[J]. Plasma Science and Technology, 2019, 21(6): 65503-065503. DOI: 10.1088/2058-6272/ab079c

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Plasma-catalytic degradation of tetracycline hydrochloride over Mn/γ-Al₂O₃ catalysts in a dielectric barrier discharge reactor

Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People’s Republic of China

Funds: This work is financially supported by National Key Research and Development Program of China (No. 2016YFB0600703) and Shijiazhuang City Important Science and Technology project (No. 176240857A).

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Received Date: November 13, 2018

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Abstract

Abstract

A coaxial dielectric barrier discharge (DBD) reactor was used for plasma-catalytic degradation of tetracycline hydrochloride over a series of Mn/γ-Al₂O₃ catalysts prepared by the incipient wetness impregnation method. The combination of plasma and the Mn/γ-Al₂O₃ catalysts significantly enhanced the degradation efficiency of tetracycline hydrochloride compared to the plasma process alone, with the 10% Mn/γ-Al₂O₃ catalyst exhibiting the best tetracycline hydrochloride degradation efficiency. A maximum degradation efficiency of 99.3% can be achieved after 5 min oxidation and a discharge power of 1.3 W, with only 69.7% by a single plasma process. The highest energy yield of the plasma-catalytic process is 91.7 gkWh⁻¹. Probable reaction mechanisms of the plasma-catalytic removal of tetracycline hydrochloride were also proposed.
- antibiotics,
- dielectric barrier discharge,
- Mn/γ-Al₂O₃,
- plasma-catalytic,
- tetracycline hydrochloride hydrochloride

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