Effects of aromatic concentration on methane fermentation. Research report, July 1988-June 1990

Technical Report · Wed Aug 01 04:00:00 EDT 1990

OSTI ID:6364795

Wang, Y T; Pai, P C; Gabbard, H D

The anaerobic biodegradability and toxicity of fourteen aromatic compounds were evaluated over a wide range of concentrations using a serum bottle technique. Benzene, toluene, and all three isomers of xylene were not significantly degraded to methane in a phenol-enriched culture. Complete degradation of 1000 mg/L phenol, 800 mg/L catechol, 100 mg/L 2-NP, 100 mg/L 3-NP, and 100 mg/L 4-NP was observed within two months while depletion of 100 mg/L resorcinol and 1000 mg/L hydroquinone required more than six and eight months incubation, respectively. None of the three isomers of chlorophenol were degraded in the phenol-enriched culture. Batch toxicity assay revealed that the phenol-enriched culture was more susceptible to inhibition caused by substituted phenols than the acetate-enriched culture. In general, the inhibitory effects on both phenol degradation and acetate utilization did not vary significantly with the isomer but rather with the substituted group. The degree of inhibition was in the order of nitrophenols chlorophenols hydroxyphenols. The Haldane inhibition model was used to fit experimental data from phenol and catechol. The inhibition of phenol degradation by chlorophenols, resorcinol, and hydroquineone was described rather well by a Monod-type noncompetitive model.

• Research Organization: Kentucky Water Resources Research Inst., Lexington, KY (USA)
• OSTI ID: 6364795
• Report Number(s): PB-91-107318/XAB; RR--174; CNN: DI-14-08-0001-G-1564
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
090900* -- Biomass Fuels-- Processing-- (1990-)
ACETATES
ALKANES
ALKYLATED AROMATICS
ANAEROBIC DIGESTION
AROMATICS
BENCH-SCALE EXPERIMENTS
BENZENE
BIOCONVERSION
BIOSYNTHESIS
CARBOXYLIC ACID SALTS
CHEMICAL REACTION KINETICS
COMPARATIVE EVALUATIONS
DEVELOPERS
DIGESTION
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INHIBITION
ISOMERS
KINETICS
LIQUID WASTES
MANAGEMENT
MATHEMATICAL MODELS
METHANE
NITRO COMPOUNDS
NITROPHENOL
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXYGEN COMPOUNDS
PHENOL
PHENOLS
POLYPHENOLS
PROCESSING
PYROCATECHOL
QUINONES
REACTION KINETICS
RESORCINOL
SYNTHESIS
TIME DEPENDENCE
TOLUENE
TOXICITY
WASTE MANAGEMENT
WASTE PROCESSING
WASTE WATER
WASTES
WATER
WATER TREATMENT
XYLENES