Key Laboratory of Songliao Aquatic Environment, Ministry of Education, School of Municipal and Environmental Engineering, Jilin Jianzhu University, Changchun, 130118, China; College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin, 150040, China.
Key Laboratory of Songliao Aquatic Environment, Ministry of Education, School of Municipal and Environmental Engineering, Jilin Jianzhu University, Changchun, 130118, China; College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin, 150040, China.
Chemosphere. 2021 Jan;262:128390. doi: 10.1016/j.chemosphere.2020.128390. Epub 2020 Sep 21.
Hydroxylamine (HA) driven advanced oxidation processes (HAOPs) for water treatment have attracted extensive attention due to the acceleration of reactive intermediates generation and the improvement on the elimination effectiveness of target contaminants. In this review, HAOPs were categorized into three parts: (1) direct reaction of HA with oxidants (e.g., hydrogen peroxide (HO), peroxymonosulfate (PMS), ozone (O), ferrate (Fe(VI)), periodate (IO)); (2) HA driven homogeneous Fenton/Fenton-like system (Fe(II)/peroxide/HA system, Cu(II)/O/HA system, Cu(II)/peroxide/HA system, Ce(IV)/HO/HA system); (3) HA driven heterogeneous Fe/Cu-Fenton/Fenton-like system (iron-bearing material/peroxide/HA system, copper-bearing material/peroxide/HA system, bimetallic composite/peroxide/HA system). Degradation efficiency of the target pollutant, reactive intermediates, and effective pH range of various HAOPs were summarized. Further, corresponding reaction mechanism was elaborated. For the direct reaction of HA with oxidants, improvement of pollutants degradation was achieved through the generation of secondary reactive intermediates which had higher reactivity compared with the parent oxidant. For HA driven homogeneous and heterogeneous Fe/Cu-Fenton/Fenton-like system, improvement of pollutants degradation was achieved mainly via the acceleration of redox cycle of Fe(III)/Fe(II) or Cu(II)/Cu(I) and subsequent generation of reactive intermediates, which avoided the drawbacks of classical Fenton/Fenton-like system. In addition, HA driven homogeneous Fe/Cu-Fenton/Fenton-like system with heterogeneous counterpart were compared. Further, formation of oxidation products from HA in various HAOPs was summarized. Finally, the challenges and prospects in this field were discussed.
羟胺（HA）驱动的高级氧化工艺（HAOPs）在水处理中受到广泛关注，因为它可以加速反应中间体的生成，并提高目标污染物的去除效率。在本综述中，HAOPs 分为三部分：（1）HA 与氧化剂的直接反应（例如，过氧化氢（HO）、过一硫酸盐（PMS）、臭氧（O）、高铁酸盐（Fe(VI)）、高碘酸盐（IO））；（2）HA 驱动的均相 Fenton/Fenton 类似体系（Fe(II)/过氧化物/HA 体系、Cu(II)/O/HA 体系、Cu(II)/过氧化物/HA 体系、Ce(IV)/HO/HA 体系）；（3）HA 驱动的非均相 Fe/Cu-Fenton/Fenton 类似体系（含铁材料/过氧化物/HA 体系、含铜材料/过氧化物/HA 体系、双金属复合材料/过氧化物/HA 体系）。总结了目标污染物的降解效率、反应中间体和各种 HAOPs 的有效 pH 范围。此外，还阐述了相应的反应机制。对于 HA 与氧化剂的直接反应，通过生成比母体氧化剂具有更高反应活性的二次反应中间体来提高污染物的降解效率。对于 HA 驱动的均相和非均相 Fe/Cu-Fenton/Fenton 类似体系，主要通过加速 Fe(III)/Fe(II)或 Cu(II)/Cu(I)的氧化还原循环和随后生成反应中间体来提高污染物的降解效率，从而避免了经典 Fenton/Fenton 类似体系的缺点。此外，还比较了具有非均相对应物的 HA 驱动的均相 Fe/Cu-Fenton/Fenton 类似体系。进一步总结了在各种 HAOPs 中 HA 形成的氧化产物。最后，讨论了该领域的挑战和前景。
