Djidja Roumaissa, Dewez David, Azzouz Abdelkrim
Nanoqam, Department of Chemistry, University of Quebec at Montreal, Montreal, QC H3C 3P8, Canada.
Station Expérimentale des Procédés Pilotes en Environnement (STEPPE), École de Technologie Supérieure, Montreal, QC H3C 1K3, Canada.
Int J Mol Sci. 2025 May 2;26(9):4347. doi: 10.3390/ijms26094347.
The ozonation of norfloxacin (NOF), a widely used fluoroquinolone antibiotic, in the presence of Na, Fe, Cu, Ni, and Co cations and their montmorillonite-supported counterparts was investigated. The NOF degradation and the toxicity of the ozonized mixtures towards an aquatic organism () were evaluated in terms of changes in its frond number, chlorophyll content, photosynthesis efficacy, and production of reactive oxygen species (ROS). The evolution over time of the NOF degradation grade and the toxicity were discussed in terms of the observed changes in the interactions of the cation and clay catalyst with NOF molecules; the pH decay, during ozonation. Ion-exchange and Lewis acid-base interactions appear to govern NOF adsorption and clay catalyst dispersion in correlation with the progressive formation of acidic species in the aqueous media. These findings reveal promising prospects for tailoring optimum oxidative water treatments with minimum toxicity and for predicting their environmental impacts on aquatic media.
研究了在钠、铁、铜、镍和钴阳离子及其蒙脱石负载对应物存在下，广泛使用的氟喹诺酮抗生素诺氟沙星（NOF）的臭氧化过程。根据水生生物（）的叶数、叶绿素含量、光合作用效率和活性氧（ROS）生成的变化，评估了NOF的降解以及臭氧化混合物对水生生物的毒性。根据观察到的阳离子和粘土催化剂与NOF分子相互作用的变化、臭氧化过程中的pH衰减，讨论了NOF降解程度和毒性随时间的演变。离子交换和路易斯酸碱相互作用似乎控制着NOF的吸附和粘土催化剂的分散，这与水介质中酸性物种的逐渐形成相关。这些发现为定制毒性最小的最佳氧化水处理方法以及预测其对水生介质的环境影响揭示了广阔前景。
