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| 1 | Application of permanganate in the oxidation of micropollutants:a mini review显示文摘As a green oxidant,permanganate has received considerable attention for the removal of micropollutants in drinking water treatment.To provide a better understanding of the oxidation of organic micropollutants with permanganate,the oxidation kinetics of 32 micropollutants were compiled.The pollutants include algal toxins,endocrine disrupting chemicals(EDCs),and pharmaceuticals.The oxidation kinetics of micropollutants by permanganate were found to be first order with respect to both contaminant and permanganate concentrations from which second-order rate constants(k″)were obtained.Permanganate oxidized the heterocyclic aromatics with vinyl moiety(i.e.,microcystins,carbamazepine,and dichlorvos)by the addition of double bonds.For the polycyclic aromatic hydrocarbons(PAHs)with alkyl groups,permanganate attacked the benzylic C-H through abstraction of hydrogen.The mechanism for the oxidation of phenolic EDCs by permanganate was a single electron transfer and aromatic ring cleavage.The presence of background matrices could enhance the oxidation of some phenolic EDCs by permanganate,including phenol,chlorinated phenols,bisphenol A,and trichlosan.The toxicity of dichlorvos solution increased after permanganate oxidation,and the estrogenic activity of bisphnol A/estrone increased significantly at the beginning of permanganate oxidation.Therefore,the toxicity of degradation products or intermediates should be determined in the permanganate oxidation processes to better evaluate the applicability of permanganate.The influence of background ions on the permanganate oxidation process is far from clear and should be elucidated in the future studies to better predict the performance of permanganate oxidation of micropollutants.Moreover,methods should be employed to catalyze the permanganate oxidation process to achieve better removal of micropollutants. | Xiaohong GUAN Di HE Jun MA Guanghao CHEN | 2010 | Frontiers of Environmental Science & Engineering2010，4，4： | 7 |
| 2 | 高锰酸钾氧化降解水中微量有机污染物的研究进展显示文摘由于微量有机污染物(Micro-organic pollutants,MCs)在饮用水源中被频繁检出,MCs微污染日益受到水处理行业的关注.高锰酸钾(Potassium permanganate,PM)具有氧化性强、适用p H范围广、操作简便安全等优点,其在我国饮用水厂预氧化工艺中的应用已日趋广泛.本文综述了PM对多类代表性MCs(包括内分泌干扰物、药物、农药等)的降解效能,讨论了MCs结构特点、p H和水中共存物质(腐植酸、无机离子)对PM与MCs反应动力学的影响、反应机理以及反应溶液的毒性变化,以期为饮用水厂PM预氧化工艺的优化提供参考. | 许可 贲伟伟 强志民 | 2017 | 环境化学2017，36，1： | 7 |
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