The efficiency and factors affecting tetracycline (TC) degradation by birnessite under microwave irradiation (MI) were investigated\nunder different initial TC concentrations, solution pH, MI time, and MI power. The crystal structure, degradation efficiency,\nand reaction mechanism were investigated using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and\nultraviolet-visible spectroscopy (UV-Vis). The results showed that birnessite was an excellent microwave catalyst. The maximum\nTC removal efficiency by birnessite was 99% under MI at 400Wfor 30 min in strongly acidic media. Under MI, the surface activity\nof birnessite increased, resulting in the ability to accelerate TC removal in high temperature.
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