Insights into the degradation of oxytetracycline through ozone assisted with hydrodynamic cavitation

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering Pub Date : 2025-05-19 DOI:10.1016/j.jwpe.2025.107942

Xiaodian Huang , Dong Yang , Liang Song , Yongcan Jiang

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引用次数: 0

Abstract

Antibiotics such as oxytetracycline (OTC) have been widely detected in surface water and pose a significant threat to public health. To solve this hot issue, numerous technologies including O₃-AOPs have been developed. In this study, an ozone assisted with hydrodynamic cavitation (OAHC) system was developed for the degradation of OTC, which shows excellent efficiency within a reaction time of 3 s. With the results of Electron Spin-Resonance (ESR) analysis, the presence and predominant role of •OH were confirmed. To simulate the degradation kinetics of OTC in the OAHC system, a simplified model was developed in close agreement with the experimental data, indicating the degradation of OTC is associated with the concentration of oxygen activated species, the gas-liquid ratio and the reaction time. Based on the intermediates analyses, the pathway of OTC degradation primarily through the attack on the tricarbonyl group, phenolic diketone group and dimethylamino group by •OH, resulting in the conjugated structure inside the benzene ring would be destroyed.

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水动力空化辅助臭氧降解土霉素的研究

土霉素等抗生素在地表水中广泛存在，对公众健康构成重大威胁。为了解决这一热点问题，包括o3 - aop在内的许多技术被开发出来。在本研究中，臭氧辅助水动力空化（OAHC）系统用于降解OTC，在3 s的反应时间内表现出优异的效率。电子自旋共振（ESR）分析结果证实了•OH的存在和主导作用。为了模拟OAHC体系中OTC的降解动力学，建立了与实验数据吻合较好的简化模型，表明OTC的降解与氧活性物质浓度、气液比和反应时间有关。通过中间体分析可知，OTC的降解途径主要是通过•OH对三羰基、酚二酮基和二甲胺基的攻击，导致苯环内的共轭结构被破坏。

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来源期刊

Journal of water process engineering Biochemistry, Genetics and Molecular Biology-Biotechnology

CiteScore

10.70

自引率

8.60%

发文量

846

审稿时长

24 days

期刊介绍： The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies