School of Environment, Tsinghua University, Beijing, 100084, China.
School of Environment, Tsinghua University, Beijing, 100084, China; Suzhou University of Science and Technology, Suzhou, 215009, China.
Environ Pollut. 2022 Sep 1;308:119673. doi: 10.1016/j.envpol.2022.119673. Epub 2022 Jun 24.
Antibiotics are emerging contaminants in aquatic environments which pose serious risks to the ecological environment and human health. Advanced oxidation processes (AOPs) based on ultraviolet (UV) light have good application prospects for antibiotic degradation. As new and developing UV-AOPs, UV/chlorine and derived UV/chloramine processes have attracted increasing attention due to the production of highly reactive radicals (e.g., hydroxyl radical, reactive chlorine species, and reactive nitrogen species) and also because they can provide long-lasting disinfection. In this review, the main reaction pathways of radicals formed during the UV/chlor (am)ine process are proposed. The degradation efficiency, influencing factors, generation of disinfection by-products (DBPs), and changes in toxicity that occur during antibiotic degradation by UV/chlor (am)ine are reviewed. Based on the statistics and analysis of published results, the effects caused by energy consumption, defined as electrical energy per order (EE/O), increase in the following order: UV/chlorine < UV/peroxydisulfate (PDS)< UV/HO < UV/persulfate (PS) < 265 nm and 285 nm UV-LED/chlorine (EE/O). Some inherent problems that affect the UV/chlor (am)ine processes and prospects for future research are proposed. The use of UV/chlor (am)ine AOPs is a rich field of research and has promising future applications, and this review provides a theoretical basis for that.
抗生素是水生环境中的新兴污染物，对生态环境和人类健康构成严重威胁。基于紫外线（UV）的高级氧化工艺（AOPs）在抗生素降解方面具有良好的应用前景。作为新型和发展中的 UV-AOPs，UV/氯（胺）工艺由于产生高反应性自由基（如羟基自由基、活性氯物种和活性氮物种），并且可以提供持久的消毒效果，因此受到越来越多的关注。在这篇综述中，提出了 UV/氯（胺）过程中形成的自由基的主要反应途径。综述了 UV/氯（胺）过程中抗生素降解的降解效率、影响因素、消毒副产物（DBPs）的生成和毒性变化。基于已发表结果的统计和分析，按能量消耗（定义为每个阶的电能，EE/O）的增加，其影响的大小依次为：UV/氯<UV/过二硫酸盐（PDS）<UV/HO<UV/过硫酸盐（PS）<265nm 和 285nm UV-LED/氯（EE/O）。提出了一些影响 UV/氯（胺）工艺的固有问题和未来研究的前景。UV/氯（胺）AOPs 的应用是一个丰富的研究领域，具有广阔的应用前景，本综述为此提供了理论基础。
