Theoretical Aspects Of The Kinetics Of Competitive First Reactions Of Ozone In The O₃/H₂O₂ And O₃/UV Oxidation Processes

Abstract

Kinetics of competition between the ozone direct reaction with compounds in water, ozone-hydroperoxide ion reaction leading to free radicals in the O₃/H₂O₂ process, and the photolysis of ozone in the O₃/UV process are discussed in terms of diffusion and reaction times to establish conditions for these reactions to be competitive. Film theory and chemical kinetic concepts then are applied to estimate initial rates of ozone absorption and consumption, removal rates of compounds present in water, and the importance of the radical oxidation path versus direct ozone and/or photolysis reactions.

Key Words:

• Ozone
• Advanced Oxidation Processes
• Oxidation Kinetics
• Ozonation
• Mass Transfer and Reaction
• Organic Micropollutant Oxidation Kinetics
• Ozone/Hydrogen Peroxide Oxidation
• Ozone/UV Radiation Oxidation
• Film Theory
• Direct Ozone Reactions
• Ozone/Photolysis Reactions