Abstract
The overall goal of this research was to develop the Vis/BC-BiOI/PMS system, integrating multiple advanced oxidation technologies, to effectively treat Enrofloxacin (ENR), a typical antibiotic pollutant known for its resistance to degradation. The modified biochar underwent thorough characterization, including analysis of its structure, morphology, surface material composition, and other properties. Adsorption experiments revealed that the Biochar (BC) component exhibited the most robust adsorption removal rate, reaching 15%, followed by Bismuth Iodide Oxide loaded Biochar (BC-BiOI) (9%) and Bismuth Iodide Oxide (BiOI) (2%). The control experiment was separately conducted under dark or visible light conditions, demonstrating that photocatalysis primarily contributed to ENR degradation. The subsequent degradation kinetics also showed this point. The pathway and mechanism of ENR degradation in the Vis/BC-BiOI/PMS system were extensively analyzed. The contribution of each active substance was determined through free radical quenching tests and Electron Paramagnetic Resonance (EPR) spectra. The results indicated that ·OH and SO4−· played dominant roles in the early stages of ENR degradation, while 1O2 became the primary contributor in the later stages, with 1O2 > ·OH > SO4−·. In addition, the toxicity and applicability of the Vis/BC-BiOI/PMS system were evaluated. This study demonstrates the effectiveness and feasibility of the Vis/BC-BiOI/PMS system in treating ENR wastewater.
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All authors contributed to the study conception and design. Bin Tan, Meng Li, Yuning Liu, Xiangyu Liu, Yuwei Ding, Bing Lin, and Qian Zhang performed the material preparation, data collection, and analysis. Yutong Xiang wrote the first draft of the manuscript, and all authors commented on previous versions. All authors read and approved the final manuscript.
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Xiang, Y., Tan, B., Li, M. et al. The Characteristics of Degradation of Enrofloxacin by Vis / BC-BiOI / PMS Photocatalytic System Based on BiOI-Modified Biochar. Water Air Soil Pollut 235, 225 (2024). https://doi.org/10.1007/s11270-024-07022-7
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DOI: https://doi.org/10.1007/s11270-024-07022-7