Record Display for the EPA National Library Catalog
RECORD NUMBER: 43 OF 50
|OLS Field Name||OLS Field Data|
|Main Title||Reductive Dehalogenation of Dichloroanilines by Anaerobic Microorganisms in Fresh and Dichlorophenol-Acclimated Pond Sediment.|
|Author||Struijs, J. ; Rogers, J. E. ;|
|CORP Author||Environmental Research Lab., Athens, GA. Office of Research and Development. ;Rijksinstituut voor de Volksgezondheid en Milieuhygiene, Bilthoven (Netherlands).|
|Additional Subjects||Water pollution ; Anaerobic bacteria ; Ponds ; Acclimatization ; Sediments ; Chlorine organic compounds ; Phenol ; Anilines ; Degradation ; Dechloronation ; Chloroanilines|
The authors investigated the transformation of 2,4-dichloroaniline (2,4-DiCA) and 3,4-DiCA to monochloroanilines (CA) in anaerobic pond sediment. Dechlorination of 3,4-DiCA to 3-CA started after a lag period of 3 weeks and was complete after an additional 5 weeks. Although 2,4-DiCA disappeared over 8 weeks, the appearance of a CA product could not be detected. In contrast, anaerobic bacteria in pond sediment acclimated to dehalogenate 2,4-dichlorophenol (2,4-DiCP) or 3,4-DiCP rapidly dechlorinated 2,4-DiCA and 3,4-DiCA without any lag time. By comparison, anaerobic sediment bacteria acclimated to 3,4-DiCA rapidly degraded 3,4-DiCP without a lag. In all cases, the CA products were stable for the duration of the experiments. The authors concluded that cross-acclimation occurred.