Evaluation of ultraviolet light/oxidizing agent as a means for the degradation of toxic organic chemicals in aqueous solutions
Conference
·
OSTI ID:6712623
Experiments have been performed to demonstrate the synergistic effect of ultraviolet light on the decomposition of toxic organic polynitro and polyhydroxy benzenes in aqueous solutions by hydrogen peroxide. These substances, which are hazardous to biota, can be degraded through photooxidation to carbon dioxide and water (and a small amount of nitric acid in the case of polynitrobenzenes). The degradation of these aromatic compounds is induced by the presence of hydroxyl radicals which are produced by the irradiation of hydrogen peroxide with ultraviolet light in water. Compounds such as 2,4-dinitrotoluene and phenol are first hydroxylated to di- and tri-hydroxybenzenes, followed by benzene-ring cleavage to produce lower-molecular-weight carboxylic acids and aldehydes via photooxidation. On further photooxidation, these carboxylic acids and aldehydes will eventually be converted to harmless carbon dioxide and water.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6712623
- Report Number(s):
- CONF-870377-2; ON: DE87004261
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
560300 -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AQUEOUS SOLUTIONS
AROMATICS
CHEMICAL REACTIONS
DATA
DECOMPOSITION
DISPERSIONS
ELECTROMAGNETIC RADIATION
EXPERIMENTAL DATA
HYDROGEN COMPOUNDS
HYDROGEN PEROXIDE
HYDROXY COMPOUNDS
HYDROXYL RADICALS
INFORMATION
MATERIALS
MIXTURES
NUMERICAL DATA
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PEROXIDES
PHENOL
PHENOLS
RADIATIONS
RADICALS
SOLUTIONS
TOXIC MATERIALS
ULTRAVIOLET RADIATION
400500* -- Photochemistry
560300 -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AQUEOUS SOLUTIONS
AROMATICS
CHEMICAL REACTIONS
DATA
DECOMPOSITION
DISPERSIONS
ELECTROMAGNETIC RADIATION
EXPERIMENTAL DATA
HYDROGEN COMPOUNDS
HYDROGEN PEROXIDE
HYDROXY COMPOUNDS
HYDROXYL RADICALS
INFORMATION
MATERIALS
MIXTURES
NUMERICAL DATA
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PEROXIDES
PHENOL
PHENOLS
RADIATIONS
RADICALS
SOLUTIONS
TOXIC MATERIALS
ULTRAVIOLET RADIATION