Effect of UV radiation on the ozonization of aqueous solutions of organic compounds and wastewaters
Solutions of nitrobenzene and oxalic and acetic acids were chosen as the materials of the investigation. The results of the investigations suggest that the formation of OH/sup ./ radicals which was due to the effect of UV radiation on the ozone dissolved in water occurred via a stage of the formation of hydrogen peroxide, with its subsequent photolytic decomposition. The use of low-pressure UV lamps made it possible to increase the rate of the ozonization process, to decrease the ozone consumption, and to increase the degree of degradation of organic impurities in the wastewater. The UV irradiation did not give a significant effect when the solution being ozonized contained substances optically active in the range of the optical activity of ozone (250-270 nm). High-pressure mercury-quartz lamps cannot be recommended for use because of the low effectiveness of their action.
- Research Organization:
- Tallin Polytechnic Institute (USSR)
- OSTI ID:
- 6327840
- Journal Information:
- J. Appl. Chem. USSR (Engl. Transl.); (United States), Journal Name: J. Appl. Chem. USSR (Engl. Transl.); (United States) Vol. 61:3; ISSN JAPUA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Investigation into the chemistry of the uv-ozone purification process. Annual report
An investigation into the chemistry of the uv-ozone purification process. Final report
Related Subjects
400500 -- Photochemistry
520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACETATES
ACETIC ACID
AQUEOUS SOLUTIONS
CARBOXYLIC ACID SALTS
CARBOXYLIC ACIDS
CHEMICAL REACTIONS
DECOMPOSITION
DICARBOXYLIC ACIDS
DISPERSIONS
EFFICIENCY
ELECTROMAGNETIC RADIATION
HYDROGEN COMPOUNDS
HYDROGEN PEROXIDE
HYDROXYL RADICALS
LIQUID WASTES
MIXTURES
MONOCARBOXYLIC ACIDS
NITRO COMPOUNDS
NITROBENZENE
OPTICAL PROPERTIES
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC WASTES
OXALATES
OXALIC ACID
OXYGEN COMPOUNDS
OZONE
OZONIZATION
PEROXIDES
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
PHYSICAL PROPERTIES
POLLUTION ABATEMENT
RADIATIONS
RADICALS
SOLUTIONS
ULTRAVIOLET RADIATION
WASTE WATER
WASTES
WATER
WATER POLLUTION ABATEMENT
WATER TREATMENT