Abstract：
Ferrate (Fe(VI): HFeO4- /FeO42-), a potent oxidant, has been investigated as an alternative chemical disinfectant in water treatment due to its reduced production of disinfection by-products. In this study, we assessed the disinfecting ability of potassium ferrate against a variety of microorganisms, including waterborne pathogens, under varying pH and water temperature conditions. We presented CT values, a metric of ferrate concentrations (C) and contact time (T), to quantify microbial inactivation rates. Among the tested microorganisms, human adenovirus was the least resistant to ferrate, followed by waterborne bacteria such as Escherichia coli and Vibrio cholerae, and finally, the protozoan parasite Giardia duodenalis. We further investigated the impact of two pH values (7 and 8) and two temperatures (5 and 25 °C) on microbial inactivation rates, observing that inactivation rates increased with lower pH and higher temperature. In addition to showcasing ferrate\'s capacity to effectively inactivate a range of the tested microorganisms, we offer a ferrate CT table to facilitate the comparison of the effectiveness of various disinfection methods.
摘要：
高铁酸盐(Fe(VI):HFeO4-/FeO42-),一种有效的氧化剂，由于减少了消毒副产物的产生，因此已被研究为水处理中的替代化学消毒剂。在这项研究中,我们评估了高铁酸钾对各种微生物的消毒能力，包括水性病原体，在不同的pH和水温条件下。我们提供了CT值，高铁酸盐浓度(C)和接触时间(T)的度量，来量化微生物的灭活率。在测试的微生物中，人类腺病毒对高铁酸盐的抗性最低，其次是水细菌，如大肠杆菌和霍乱弧菌，最后，原生动物寄生虫十二指肠贾第鞭毛虫。我们进一步研究了两个pH值（7和8）和两个温度（5和25°C）对微生物失活率的影响，观察到失活率随着较低的pH和较高的温度而增加。除了展示高铁酸盐有效灭活一系列测试微生物的能力，我们提供了高铁酸盐CT表，以方便比较各种消毒方法的有效性。
