Ferrate(VI) (FeVIO42, Fe(VI)) is an emerging oxidant/disinfectant to treat a wide range of contaminants and microbial pollutants in wastewater. This study describes the inactivation of murine norovirus (MNV) by Fe(VI) in phosphate buffer (PB) and secondary effluent wastewater (SEW). The decay of Fe(VI) had second-order kinetics in PB while Fe(VI) underwent an initial demand followed by first-order decay kinetics in SEW. The Chick-Watson inactivation kinetic model, based on integral CT (ICT) dose, well fitted the inactivation of MNV in both PB and SEW. In PB, the values of the inactivation rate constant (kd) decreased with an increase in pH, which was related to the reaction of protonated Fe(VI) species (HFeO4-) with MNV. Higher kd was observed in SEW than in PB. The inactivation of indigenous fecal coliforms (FC) in SEW was also measured. A two-population double-exponential model that accounted for both dispersed and particle-associated FC well fitted the inactivation data with determined kd and particle-associated inactivation rate constant (kp). Results show that Fe(VI) was more effective in inactivating dispersed FC than MNV. The MNV inactivation results obtained herein, coupled with the detailed modeling, provide important information in designing an Fe(VI) wastewater disinfection process.

中文翻译：

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高铁酸盐（VI）在次要废水中对鼠诺如病毒和粪大肠菌群的灭活作用。

高铁酸盐（VI）（FeVIO42，Fe（VI））是一种新兴的氧化剂/消毒剂，用于处理废水中的各种污染物和微生物污染物。这项研究描述了磷酸盐缓冲液（PB）和二级废水（SEW）中的Fe（VI）对鼠诺如病毒（MNV）的灭活作用。Fe（VI）的衰减在PB中具有二阶动力学，而Fe（VI）受到初始需求，然后在SEW中具有一阶衰减动力学。基于积分CT（ICT）剂量的Chick-Watson失活动力学模型非常适合PB和SEW中MNV的失活。在PB中，失活速率常数（kd）的值随pH的增加而降低，这与质子化的Fe（VI）物种（HFeO4-）与MNV的反应有关。SEW的kd高于PB。还测量了SEW中本地粪便大肠菌群（FC）的失活。解释了分散的和与粒子相关的FC的两种群双指数模型很好地拟合了确定的kd和与粒子相关的失活速率常数（kp）的失活数据。结果表明，Fe（VI）在灭活分散的FC方面比MNV更有效。本文获得的MNV灭活结果，再加上详细的建模，为设计Fe（VI）废水消毒工艺提供了重要信息。