Investigation into the chemistry of the uv-ozone purification process. Annual report
This report describes the first year of a study of the synergistic effect of ozone and UV light in the decomposition of organic compounds in water. The UV-ozone process has proven to be effective in degrading certain classes of organic pollutants, but the chemical and photo-chemical mechanisms involved are not well understood. The study was designed to formulate hypotheses from experiments on model organic compounds in water solution involving ozonation with and without UV light and treatment with reagents which generate OH radicals. It was determined that ozonation and UV-ozonation of nitrobenzene, selected as a primary model compound,followed identical sequence of reactions via mono-, di-, and trihydroxylation of the benzene ring; the major stable intermediates were oxalic acid, formic acid, and glyoxal. For all oxidation systems and all model compounds (nitrobenzene, anisole, benzoic acid, and 3-chlorobenzoic acid) the kinetics were pseudo-first order.
- Research Organization:
- Westgate Research Corp., Los Angeles, CA (USA)
- OSTI ID:
- 5587477
- Report Number(s):
- PB-296485
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400500* -- Photochemistry
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
ELECTROMAGNETIC RADIATION
KINETICS
ORGANIC COMPOUNDS
OXIDATION
OZONE
PHOTOCHEMISTRY
POLLUTION CONTROL
RADIATIONS
REACTION KINETICS
ULTRAVIOLET RADIATION
WATER POLLUTION CONTROL