Destruction of pollutants in water with ozone in combination with ultraviolet radiation. 3. Photolysis of aqueous ozone

Journal Article · Fri Jul 01 00:00:00 EDT 1988 · Environ. Sci. Technol.; (United States)

DOI:https://doi.org/10.1021/es00172a003· OSTI ID:6584778

Peyton, G R; Glaze, W H

Photolytic ozonation (ozone/UV) has been known for some time to effectively destroy organic compounds which are refractory to ozonation. The mechanistic details, however, have not previously been elucidated. The present study demonstrates that the first step in the complex mechanism is the photolysis of aqueous ozone to produce hydrogen peroxide. This step is followed by secondary reactions which produce hydroxyl radical, the active species which is most responsible for organic compound destruction. In the presence of oxygen, reaction of many organic compounds with hydroxyl radical results in the production of superoxide and/or hydrogen peroxide, both of which may react further with ozone to produce more hydroxyl radicals.

• Research Organization: SumX Corporation, Austin, TX (USA)
• OSTI ID: 6584778
• Journal Information: Environ. Sci. Technol.; (United States), Journal Name: Environ. Sci. Technol.; (United States) Vol. 22:7; ISSN ESTHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500 -- Photochemistry
520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AQUEOUS SOLUTIONS
CHEMICAL REACTIONS
CHEMISTRY
DECOMPOSITION
DISPERSIONS
ELECTROMAGNETIC RADIATION
HYDROGEN COMPOUNDS
HYDROGEN PEROXIDE
HYDROXYL RADICALS
MIXTURES
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
OZONE
OZONIZATION
PEROXIDES
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
POLLUTION
RADIATIONS
RADICALS
SOLUTIONS
SUPEROXIDE RADICALS
SYNTHESIS
ULTRAVIOLET RADIATION
WATER CHEMISTRY
WATER POLLUTION