State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Yangtze River Delta Branch, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Yiwu City, Zhejiang Province, 322000, China.
J Environ Manage. 2022 Aug 15;316:115328. doi: 10.1016/j.jenvman.2022.115328. Epub 2022 May 20.
Microorganic pollutants (MOPs) in aquatic environment with low levels but high toxicity are harmful to ecosystem and human health. Fe(VI) has a dual-functional role in oxidation and coagulation, and can effectively remove MOPs, heavy metal, phosphate, particulates and colloids. Moreover, Fe(VI) can combine with traditional coagulants, or use as a pretreatment for membrane treatment because of its characters to generate nanoparticles by degradation in water. Based on the relevant toxicity experiments, Fe(VI) had been proved to be safe for the efficient treatment of MOPs. For better utilization of Fe(VI), its oxidation and coagulation mechanisms are summarized, and the knowledge about the control parameters, utilization methods, and toxicity effect for Fe(VI) application are reviewed in this paper. pH, different valences of iron, environmental substances, and other parameters are summarized in this study to clarify the important factors in the treatment of MOPs with Fe(VI). In the future study, aiming at cost reduction in Fe(VI) preparation, transportation and storage, enhancement of oxidation in the intermediate state, and better understanding the mechanism between interface and Fe(VI) oxidation will help promote the application of Fe(VI) in the removal of MOPs. This study offers guidelines for the application and development of Fe(VI) for the treatment of MOPs in aquatic environment.
水体中的微量有机污染物（MOPs）含量低但毒性高，对生态系统和人类健康有害。六价铁（Fe(VI)）在氧化和混凝方面具有双重功能，能有效去除 MOPs、重金属、磷酸盐、颗粒物和胶体。此外，由于 Fe(VI)在水中降解可生成纳米颗粒，因此它可以与传统混凝剂结合使用，或作为膜处理的预处理方法。基于相关毒性实验，Fe(VI)已被证明可安全有效地处理 MOPs。为了更好地利用 Fe(VI)，本文总结了其氧化和混凝机制，并综述了有关 Fe(VI)应用的控制参数、利用方法和毒性效应的知识。本文总结了 pH 值、不同价态的铁、环境物质等参数，以阐明用 Fe(VI)处理 MOPs 的重要因素。未来的研究将针对 Fe(VI)制备、运输和储存成本的降低、中间态氧化的增强以及更好地理解界面与 Fe(VI)氧化之间的机制，这将有助于推动 Fe(VI)在去除 MOPs 中的应用。本研究为 Fe(VI)在水体中 MOPs 处理中的应用和发展提供了指导。
