Revisiting the contribution of FeIVO2+ in Fe(II)/peroxydisulfate system |
| |
| Institution: | 1. College of Environmental Science and Engineering, Hunan University, Changsha 410082, China;2. Ministry of Education, Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Changsha 410082, China;3. Key Laboratory of the Three Gorges Reservoir Region''s Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400045, China |
| |
| Abstract: | Recent studies have proposed that the high-valent iron species (such as FeIVO2+) rather than sulfate radical (SO4??) and hydroxyl radical (?OH) are the main reactive oxidant species (ROS) in Fe(II)/peroxydisulfate (PDS) system with the methyl phenyl sulfoxide (PMSO) as the FeIVO2+ probe. However, many operational factors may interfere with the accuracy of this method, so the contribution of FeIVO2+ calculated by this method is controversial. In this study, the possible effect of Fe(II) concentration, pollutant type, reducing agent, or coexisted anions on FeIVO2+ production and its corresponding contribution to the removal of target pollutants in the Fe(II)/PDS system were investigated in detail, and the intrinsic mechanisms involved were also explored. This study shows that ROS generation is a complex process in the Fe(II)/PDS system, and multiple combinatorial approaches are urgently required to deeply explore the contribution of ROS to the elimination of target contaminants. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
