Environmental Applications of Catalytic Ozonation
A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Green Chemistry".
Deadline for manuscript submissions: closed (30 June 2019) | Viewed by 26202
Special Issue Editors
Interests: water ozonation; advanced oxidation processes; catalysis engineering; environmental remediation; photocatalysis
Special Issues, Collections and Topics in MDPI journals
Interests: advanced oxidation processes; catalyst preparation and characterization; water and wastewater treatment technologies
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleagues,
Ozone, an allotropic form of oxygen, is known to react with organics in water through two reaction mechanisms: selective direct reaction with some organics having specific moieties, and unselective reaction through free radical oxygen species (ROS), mainly hydroxyl radicals, coming from ozone decomposition. In spite of the high reactivity of ozone, its application in water treatment did not take off until the end of the 1970s, when ozone was confirmed as an alternative oxidant to chlorine to reduce the formation of organohalogen compounds during drinking water disinfection. A decade later, research on the combination of ozone and UV radiation or hydrogen peroxide showed ways to increase hydroxyl radical concentrations, giving rise to the appearance of advanced oxidation processes (AOPs). Later, different AOPs have been extensively investigated (Fenton, photocatalytic oxidation, etc.) Among them, catalytic ozonation has attracted interest for water treatment in spite of the costs associated with the generation and dissolution of ozone in water. In fact, in the period 1990–2018, more than 650 works have been published on this subject. At the turn of the century, another ozone-based AOP called the interest of the scientific community: photocatalytic ozonation, or the combination of catalysts, radiation, and ozone. In the period 2005–2018, the literature has reported more than 100 publications on this emerging AOP. In addition to water treatment applications, catalytic ozonation is receiving attention as a method to control volatile organic compounds (VOCs) emissions.
This Special Issue is dedicated to catalytic ozonation processes with the aim to collect findings on aspects related to the synthesis and characterization of catalysts, the removal of organics, the mechanism and kinetics of the processes, the combination of catalytic ozonation with other elements and operations, such as membranes, carbon adsorption, and biological oxidation, the application in the treatment of wastewater, and the control of gaseous emissions.
Prof. Fernando J. Beltrán Novillo
Dr. Pedro M. Álvarez
Guest Editors
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Keywords
- Ozonation
- Catalytic ozonation
- Photocatalytic ozonation
- Advanced oxidation processes
- Water and wastewater treatment
- Air purification
- Heterogeneous catalysis
- Reaction kinetics
- Reaction mechanism
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