Design of a continuous fixed film photocatalytic reactor based on Bi2WO6/ZnFe2O4 magnetic photocatalyst and application in tetracycline degradation

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Abstract

A kind of continuous magnetic fixed-film reactor was designed and applied in tetracycline degradation based on the Bi2WO6/ZnFe2O4 magnetic photocatalyst. The effects of light intensity, initial TC concentration and HRT on the photocatalytic effect were investigated. At the pollutant concentration of 51.58 mg/L, light intensity of 3.20×105 lux and HRT of 94 min, the TC removal rate in the reactor was enhanced to above 90% and maximized to 94.05%. From the different pollutant concentrations, the specific outflow criterion could be achieved by regulating the HRT within a certain range, so as to maximize the reactor use efficiency. Compared with conventional fixed-film reactors, the new reactor had larger reaction contact area and avoided the defect of catalyst shedding.

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Li, C., Lv, C., Wang, Y., & Zhong, S. (2019). Design of a continuous fixed film photocatalytic reactor based on Bi2WO6/ZnFe2O4 magnetic photocatalyst and application in tetracycline degradation. In IOP Conference Series: Earth and Environmental Science (Vol. 330). Institute of Physics Publishing. https://doi.org/10.1088/1755-1315/330/4/042019

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