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Fenton Reaction-Unique but Still Mysterious

期刊

PROCESSES
卷 11, 期 2, 页码 -

出版社

MDPI
DOI: 10.3390/pr11020432

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Fenton reaction; Fenton-like reactions; advanced oxidation processes; wastewater treatment

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This study focuses on the Fenton reaction, which has been extensively studied but still offers opportunities for further investigation as a method of advanced oxidation. The choice of concentrations and ratios of hydrogen peroxide and catalysts, as well as the homogeneous and heterogeneous arrangements, is currently determined experimentally and requires optimization. The study highlights the importance of the Fenton reaction in environmental issues and recognizes it as the foundation for all advanced oxidation processes. It aims to summarize the current knowledge, identify advantages, and address existing problems, while also proposing necessary steps for further research in this area.
This study is devoted to the Fenton reaction, which, despite hundreds of reports in a number of scientific journals, provides opportunities for further investigation of its use as a method of advanced oxidation of organic macro- and micropollutants in its diverse variations and hybrid systems. It transpires that, for example, the choice of the concentrations and ratios of basic chemical substances, i.e., hydrogen peroxide and catalysts based on the Fe2+ ion or other transition metals in homogeneous and heterogeneous arrangements for reactions with various pollutants, is for now the result of the experimental determination of rather randomly selected quantities, requiring further optimizations. The research to date also shows the indispensability of the Fenton reaction related to environmental issues, as it represents the pillar of all advanced oxidation processes, regarding the idea of oxidative hydroxide radicals. This study tries to summarize not only the current knowledge of the Fenton process and identify its advantages, but also the problems that need to be solved. Based on these findings, we identified the necessary steps affecting its further development that need to be resolved and should be the focus of further research related to the Fenton process.

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