UV/ H2O2 Advanced Oxidation Process for Simultaneous Removal of NO and SO2: A Review

This study presents a review on advanced oxidation processes (AOPs) for simultaneous removal of NO and SO2. AOP, based on using a strong oxidant such as ozone and H2O2, is able to generate highly reactive intermediates. The pollutant are oxidized and removed by these intermediates. AOP has recently been considered as an effective and attractive technology in flue gas purification. In this article, first, a brief overview on conventional methods for NOx removal is presented. Then, the concepts of AOP are explained and the different AOPs are introduced. Since, H2O2 is widely used as a chemical oxidant in advanced oxidation processes, this article mainly focuses on advanced oxidation with H2O2. In addition, this study emphasizes on UV/H2O2 advanced oxidation process applying UV light for producing active radicals. The concepts, status of progress, and attractive issues for future researches are discussed.