Sonolytical decomposition of harmful substances in the atmospheric environment
- Univ. of Osaka Prefecture, Sakai (Japan)
Reaction kinetics and mechanisms of sonolytical decomposition of flone, alternative flone, insecticides, organic halogen compounds such as trichloroethylene, tetrachloroethylene, tetrachloroethane, carbon tetrachloride, chlorophenol have been investigated. These environmental harmful substances were readily decomposed to carbon dioxide and halogen ions by the sonolysis in aqueous solution. Decomposition took place in two paths. One was seemed to be the attack of OH radicals which were produced in the sonolysis of water (path 1). The other was the combustion at high temperature (5000C) in the cavities (path 2). The attack of OH radicals were retarded by the addition of t-butyl alcohol which is well known as scavenger of OH radicals. Addition of Zn powder accelerate the decomposition of chlorine containing compounds. The harmful substances which have high hydrophobicities and high boiling points were decomposed mainly in path 2 and substances which have low boiling points and low solubilities in the water could be readily decomposed by the combustion in the cavities.
- OSTI ID:
- 466104
- Report Number(s):
- CONF-9606185-; TRN: 96:005931-0053
- Resource Relation:
- Conference: 5. international conference on atmospheric sciences and applications to air quality, Seattle, WA (United States), 18-20 Jun 1996; Other Information: PBD: 1996; Related Information: Is Part Of The 5th international atmospheric sciences and applications to air quality conference; PB: 322 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Kinetics and mechanism of the sonolytic destruction of methyl tert-butyl ether by ultrasonic irradiation in the presence of ozone
Development and reactivity of novel heterogeneous catalysts for hydrocarbon conversions