PMID- 2719477
OWN - NLM
STAT- MEDLINE
DCOM- 19890616
LR  - 20210526
IS  - 0099-2240 (Print)
IS  - 1098-5336 (Electronic)
IS  - 0099-2240 (Linking)
VI  - 55
IP  - 2
DP  - 1989 Feb
TI  - Anaerobic biodegradation of 2,4-dichlorophenol in freshwater lake sediments at 
      different temperatures.
PG  - 348-53
AB  - Anaerobic degradation of 2,4-dichlorophenol (2,4-DCP) between 5 and 72 degrees C 
      was investigated. Anaerobic sediment slurries prepared from local freshwater pond 
      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 50 degrees C, 
      although methane was formed up to 60 degrees C. In sediment samples from two 
      sites and at all tested temperatures from 5 to 50 degrees C, 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 40 
      degrees C. Adaptation periods for 2,4-DCP transformation decreased between 5 and 
      25 degrees C, were essentially constant between 25 and 35 degrees C, and 
      increased in the tubes incubated at temperatures between 35 and 40 degrees C. The 
      degradation rates increased exponentially between 15 and 30 degrees C, had a 
      second peak at 35 degrees C, and decreased to about 5% of the peak activity by 40 
      degrees C. In tubes from one sediment sample, incubated at temperatures above 40 
      degrees C, an increase in the degradation rate was observed following the minimum 
      at 40 degrees C. This suggests that at least two different organisms were 
      involved in the transformation of 2,4-DCP to 4-CP. Storage of the original 
      sediment slurries for 2 months at 12 degrees C resulted in increased adaptation 
      times, but did not affect the degradation rates.
FAU - Kohring, G W
AU  - Kohring GW
AD  - Center for Biological Resource Recovery, University of Georgia, Athens 30602.
FAU - Rogers, J E
AU  - Rogers JE
FAU - Wiegel, J
AU  - Wiegel J
LA  - eng
PT  - Journal Article
PT  - Research Support, U.S. Gov't, Non-P.H.S.
PL  - United States
TA  - Appl Environ Microbiol
JT  - Applied and environmental microbiology
JID - 7605801
RN  - 0 (Chlorophenols)
RN  - 0 (Water Pollutants)
RN  - 0 (Water Pollutants, Chemical)
RN  - R669TG1950 (2,4-dichlorophenol)
SB  - IM
MH  - Anaerobiosis
MH  - Biodegradation, Environmental
MH  - *Chlorophenols
MH  - Fresh Water
MH  - Kinetics
MH  - Thermodynamics
MH  - *Water Pollutants
MH  - *Water Pollutants, Chemical
PMC - PMC184113
EDAT- 1989/02/01 00:00
MHDA- 1989/02/01 00:01
PMCR- 1989/02/01
CRDT- 1989/02/01 00:00
PHST- 1989/02/01 00:00 [pubmed]
PHST- 1989/02/01 00:01 [medline]
PHST- 1989/02/01 00:00 [entrez]
PHST- 1989/02/01 00:00 [pmc-release]
AID - 10.1128/aem.55.2.348-353.1989 [doi]
PST - ppublish
SO  - Appl Environ Microbiol. 1989 Feb;55(2):348-53. doi: 
      10.1128/aem.55.2.348-353.1989.