Anaerobic biodegradation of 2,4-dichlorophenol in freshwater lake sediments at different temperatures

Technical Report · Sun Jan 01 04:00:00 EST 1989

OSTI ID:5842867

Kohring, G W; Rogers, J E; Wiegel, J

Anaerobic degradation of 2,4-dichlorophenol (2,4-DCP) between 5 and 72C was investigated. Anaerobic sediment slurries prepared from local freshwater sediments were partitioned into anaerobic tubes or serum vials, which then were incubated separately at the various temperatures. Reductive 2,4-DCP dechlorination occurred only in the temperature range between 5 and 50C, although methane was formed up to 60C. In sediment samples from two sites and at all temperatures from 5 to 50C, 2,4-DCP was transformed to 4-chlorophenol (4-CP). The 4-CP intermediate was subsequently degraded after an extended lag period in the temperature range from 15 to 40C. Adaptation periods for 2,4-DCP transformation decreased between 5 and 25C, were essentially constant between 25 and 35C, and increased in the tubes incubated at temperatures between 35 and 40C. This suggests that at least two different organisms were involved in the transformation of 2,4-DCP to 4-CP.

• Research Organization: Georgia Univ., Athens, GA (USA)
• OSTI ID: 5842867
• Report Number(s): PB-89-197495/XAB
• Country of Publication: United States
• Language: English

Related Subjects

520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ALKANES
AROMATICS
BIODEGRADATION
CHEMICAL REACTIONS
CHLORINATED AROMATIC HYDROCARBONS
CONTROL
DECHLORINATION
DECOMPOSITION
DEHALOGENATION
HALOGENATED AROMATIC HYDROCARBONS
HERBICIDES
HYDROCARBONS
HYDROXY COMPOUNDS
LAKES
METHANE
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PESTICIDES
PHENOLS
POLLUTION CONTROL
SEASONAL VARIATIONS
SEDIMENTS
SURFACE WATERS
TEMPERATURE GRADIENTS
VARIATIONS
WATER POLLUTION CONTROL