Effect of preozonation on the anaerobic biodegradability of resistant phenolic compounds
Ozone pretreatment studies of four model phenolic compounds were conducted to evaluate the effects of ozonation on the anaerobic biodegradability and toxicity of these compounds. Two types of batch studies, the Biochemical Methane Potential (BMP) and the Anaerobic Toxicity Assay (ATA), were performed on samples ozonated upon phenol, o-cresol, 2,5-dichlorophenol and 2,4-dinitrophenol. Experimental results showed that toxic and refractory phenolic compounds were converted to methane gas by means of preozonation. In general, the biodegradable fraction of the oxidation products increased as the ozone dose was increased. The early ozonation products of o-cresol and phenol, however, were more toxic than the initial compounds. The rates of COD and Dissolved Organic Carbon (DOC) reduction through ozonation were faster and products formed were less inhibitory in the basic pH range than in the acid pH range.
- Research Organization:
- Kentucky Univ., Lexington (USA). Water Resources Research Inst.
- OSTI ID:
- 6654836
- Report Number(s):
- PB-89-115505/XAB; RR-169
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
OZONIZATION
CHEMICAL REACTION KINETICS
PHENOLS
ANAEROBIC DIGESTION
BIODEGRADATION
TOXICITY
BIOSYNTHESIS
ACETATES
BIOASSAY
CHEMICAL OXYGEN DEMAND
CRESOLS
DESIGN
METHANE
ALKANES
AROMATICS
BIOCONVERSION
CARBOXYLIC ACID SALTS
CHEMICAL REACTIONS
DECOMPOSITION
DIGESTION
HYDROCARBONS
HYDROXY COMPOUNDS
KINETICS
MANAGEMENT
ORGANIC COMPOUNDS
PROCESSING
REACTION KINETICS
SYNTHESIS
WASTE MANAGEMENT
WASTE PROCESSING
090120* - Hydrocarbon Fuels- Preparation- (1976-1989)