Anaerobic degradation of chloroaromatic compounds in aquatic sediments under a variety of enrichment conditions
Anaerobic degradation of monochlorinated phenols and monochlorinated benzoates by a variety of aquatic sediments was compared under four enrichment conditions. A broader range of compounds was degraded in enrichments inoculated with sediment exposed to industrial effluents. Methanogenic and 1 mM BESA-amended enrichments were most likely, while nitrate and sulfate enrichments least likely, to degrade the compounds tested. Chlorophenols were more readily degraded than chlorobenzoates. However, 2-chlorophenol, 3-chlorophenol, and 3-chlorobenzoate degradation was observed most often and with equal frequency. Para-chlorinated compounds were least likely to be degraded. A relative order of ortho < meta < para was observed for onset of chlorophenol degradation, while the order for chlorobenzoate degradation was meta < ortho < para. In laboratory transfers, 2- and 3-chlorobenzoate degradation was most easily maintained, while degradation of para-chlorinated compounds was least stable.
- Research Organization:
- Technical Resources, Inc., Gulf Breeze, FL (USA)
- OSTI ID:
- 7267205
- Report Number(s):
- PB-90-128018/XAB
- Country of Publication:
- United States
- Language:
- English
Similar Records
Reductive dehalogenation and conversion of 2-chlorophenol to 3-chlorobenzoate in a methanogenic sediment community: Implications for predicting the environmental fate of chlorinated pollutants
Reductive dechlorination of chlorophenols in methanogenic cultures
Related Subjects
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
ANAEROBIC CONDITIONS
AROMATICS
BACTERIA
BIODEGRADATION
CHEMICAL REACTIONS
CHLORINATED AROMATIC HYDROCARBONS
DECOMPOSITION
HALOGENATED AROMATIC HYDROCARBONS
INDUSTRIAL WASTES
METHANOGENIC BACTERIA
MICROORGANISMS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
SEDIMENTS
WASTES