title: Modeling the oxidation of phenolic compounds by hydrogen peroxide photolysis.
abstract: Hydrogen peroxide UV photolysis is among the most widely used advanced oxidation processes (AOPs) for the destruction of trace organics in waters destined for reuse. Previous kinetic models of hydrogen peroxide photolysis focus on the dynamics of hydroxyl radical production and consumption, as well as the reaction of the target organic with hydroxyl radicals. However, the rate of target destruction may also be affected by radical scavenging by reaction products. In this work, we build a predictive kinetic model for the destruction of p-cresol by hydrogen peroxide photolysis based on a complete reaction mechanism that includes reactions of intermediates with hydroxyl radicals. The results show that development of a predictive kinetic model to evaluate process performance requires consideration of the complete reaction mechanism, including reactions of intermediates with hydroxyl radicals.
authors.affiliation: Department of Chemical and Environmental Engineering, University of Arizona, Tucson, AZ, 85721, United States.
authors.forename: Tianqi
authors.initials: T
authors.lastname: Zhang
authors.affiliation: Department of Chemical and Environmental Engineering, University of Arizona, Tucson, AZ, 85721, United States.
authors.forename: Long
authors.initials: L
authors.lastname: Cheng
authors.affiliation: Department of Chemical and Environmental Engineering, University of Arizona, Tucson, AZ, 85721, United States.
authors.forename: Lin
authors.initials: L
authors.lastname: Ma
authors.affiliation: Department of Chemical and Environmental Engineering, University of Arizona, Tucson, AZ, 85721, United States.
authors.forename: Fanchao
authors.initials: F
authors.lastname: Meng
authors.affiliation: Department of Chemical and Environmental Engineering, University of Arizona, Tucson, AZ, 85721, United States.
authors.forename: Robert G
authors.initials: RG
authors.lastname: Arnold
authors.affiliation: Department of Chemical and Environmental Engineering, University of Arizona, Tucson, AZ, 85721, United States. Electronic address: esaez@email.arizona.edu.
authors.forename: A Eduardo
authors.initials: AE
authors.lastname: Sáez
mesh_terms: D003408:Cresols / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry*; D017665:Hydroxyl Radical / Q000737:chemistry* / Q000528:radiation effects*; D007700:Kinetics; D008956:Models, Chemical; D010084:Oxidation-Reduction; D010782:Photolysis; D014466:Ultraviolet Rays; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods
chemical_list: D003408:Cresols; D014874:Water Pollutants, Chemical; C032538:4-cresol; D017665:Hydroxyl Radical; D006861:Hydrogen Peroxide
keywords: Advanced oxidation processes; Kinetic model; Phenolic compounds; Radical reactions