首页|基于紫外线的高级氧化或高级还原技术降解水中全氟或多氟烷基化合物

基于紫外线的高级氧化或高级还原技术降解水中全氟或多氟烷基化合物

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  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
全氟或多氟烷基化合物(PFASs)是一类具有难降解性、生物蓄积性和潜在毒性的持久性有机污染物，广泛存在于各类环境介质中。水环境是PFASs最重要的归趋之一，然而水处理常规技术难以去除PFASs，近年来，基于紫外线的高级氧化或高级还原技术在PFASs的降解中表现出巨大的发展潜力和良好的应用前景。本文针对目前对于直接紫外光降解、紫外高级氧化技术和紫外高级还原技术降解PFASs的相关研究，重点从降解机理(包括活性物种产生机理和反应机理)、降解效率(包括降解率和脱氟率)和影响因素(包括光波长、pH、溶解氧、无机离子和腐殖酸等)三个维度对比了不同反应体系下PFASs的去除效能，并总结了基于紫外线的高级氧化或高级还原技术应用于去除实际水体中PFASs时需克服的难点，以期为该类技术在PFASs降解方面的发展提供参考。
Degradation of per-and polyfluoroalkyl substances in water by UV-based advanced oxidation or advanced reduction processes
Per-and polyfluoroalkyl substances(PFASs)are a class of persistent organic pollutants that exhibit high resistance to degradation,bioaccumulation,and potential toxicity.They are widely present in various environmental media,and the aqueous environment is one of the most significant fates for PFASs.However,conventional water treatment technologies struggle to remove PFASs.In recent years,advanced oxidation processes(AOPs)or advanced reduction processes(ARPs)based on ultraviolet(UV)light have shown great potential and promising prospects for the removal of PFASs.According to the latest research on the degradation of PFASs by direct UV photodegradation,UV-AOPs and UV-ARPs,this article focused on the degradation mechanism,degradation efficiency and influencing factors of different reaction systems.Among them,the degradation mechanism included active species generation mechanism and reaction mechanism;the degradation efficiency included degradation rate and defluorination rate;and the influencing factors included light wavelength,pH,dissolved oxygen,inorganic ions and humic acid.Finally,the difficulties to be overcome were proposed when UV-AOPs or UV-ARPs were applied to the removal of PFASs in real water bodies,aiming to provide thinking for its future development.

per-and polyfluoroalkyl substancesphotochemistryadvanced oxidation processesradicaladvanced reduction processesdegradation ratedefluorination rate

张茜、李皓芯、张天阳、李子富、孙文俊、敖秀玮

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北京科技大学能源与环境工程学院,北京 100083

同济大学环境科学与工程学院,上海 200092

水利部长三角城镇供水节水及水环境治理重点实验室,上海 200092

清华大学环境学院,北京 100084

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全氟或多氟烷基化合物 光化学 高级氧化技术 自由基 高级还原技术 降解率 脱氟率

国家自然科学基金国家自然科学基金中央高校基本科研业务费专项中央高校基本科研业务费专项

52270020522611456930650021100007782

2024

10.16085/j.issn.1000-6613.2023-1013

化工进展
中国化工学会,化学工业出版社

化工进展

CSTPCD北大核心
影响因子：1.062
ISSN：1000-6613
年,卷(期)：2024.43(8)