Wang Zhenxing, Manickam Sivakumar, Wang Wenlong, Fu Lin, Bie Haiyan, Wang Benlong, Sun Xun
Key Laboratory of High Efficiency and Clean Mechanical Manufacture of the Ministry of Education, School of Mechanical Engineering, Shandong University, Jinan 250061, China; State Key Laboratory of Advanced Equipment and Technology for Metal Forming, Shandong University, Jinan 250061, China.
Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Brunei, Bandar Seri Begawan BE 1410, Brunei.
Ultrason Sonochem. 2025 Jul 28;120:107475. doi: 10.1016/j.ultsonch.2025.107475.
In this study, an innovative integration of hydrodynamic cavitation (HC), ultraviolet (UV) irradiation, and hydrogen peroxide (HO) was employed to effectively degrade ciprofloxacin (CIP), a representative antibiotic, in a 12-litre treatment system. The study systematically investigated the cavitation characteristics, synergistic interactions, and the influence of key operating parameters (inlet pressure, initial solution pH, HO concentration, and initial CIP concentration) on the performance of the HC/UV/HO system. Additionally, the potential degradation mechanism, practical applicability, and economic feasibility of the integrated process were thoroughly evaluated. The results demonstrated that the integrated system achieved a synergistic index as high as 8.174 under suboptimal conditions, and completely degraded CIP within 70 min under optimal operational parameters. This performance can be attributed to the synergistic cavitation effects comprising mechanical disruption of molecular bonds, pyrolytic decomposition, and radical oxidation through •OH/•H generation via water dissociation, along with enhanced mass transfer induced by HC-generated turbulence, and the accelerated decomposition of HO into additional •OH radicals facilitated by the combined UV and HC effects. In addition, under sub-optimal conditions, the system achieved complete degradation of rhodamine B (RhB) and doxycycline hydrochloride (DOX), along with a 93.9% degradation efficiency for malachite green (MG) within 60 min. The system demonstrated superior treatment effectiveness and time efficiency compared to previously reported methods. These findings highlight the HC/UV/HO process as a promising, scalable, and energy-efficient solution for treating industrial wastewater containing antibiotics.
在本研究中，采用了一种创新性的组合工艺，将水力空化（HC）、紫外线（UV）照射和过氧化氢（H₂O₂）相结合，在一个12升的处理系统中有效降解典型抗生素环丙沙星（CIP）。该研究系统地研究了空化特性、协同相互作用以及关键操作参数（入口压力、初始溶液pH值、H₂O₂浓度和初始CIP浓度）对HC/UV/H₂O₂系统性能的影响。此外，还对该组合工艺的潜在降解机制、实际适用性和经济可行性进行了全面评估。结果表明，该组合系统在次优条件下实现了高达8.174的协同指数，并在最佳操作参数下70分钟内完全降解了CIP。这种性能可归因于协同空化效应，包括分子键的机械破坏、热解分解以及通过水分子离解产生•OH/•H进行自由基氧化，同时HC产生的湍流增强了传质，UV和HC的联合作用促进了H₂O₂加速分解为额外的•OH自由基。此外，在次优条件下，该系统在60分钟内实现了罗丹明B（RhB）和盐酸多西环素（DOX）的完全降解，以及孔雀石绿（MG）93.9%的降解效率。与先前报道的方法相比，该系统表现出卓越的处理效果和时间效率。这些发现突出了HC/UV/H₂O₂工艺作为一种有前景、可扩展且节能的解决方案，用于处理含抗生素的工业废水。
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