Effects of three concentrations of mixed fatty acids on dechlorination of tetrachloroethene in aquifer microcosms

Technical Report · Sat Jan 01 04:00:00 EST 1994

OSTI ID:7285967

Gibson, S A; Roberson, D S; Russell, H H; Sewell, G W

Chloroethenes are among the most common organic contaminants of ground water. The biotransformation of these compounds by reductive dechlorination is a promising technology for in situ treatment. The effects of three concentrations of a fatty acids mixture on the reductive dehalogenation of tetrachloroethene (PCE) were studied in methanogenic microcosms. These microcosms were constructed with slurries of aquifer solids collected from an area impacted both by aviation gasoline and chlorinated ethenes at Traverse City, Michigan. PCE was not dechlorinated in microcosms without a fatty acid supplement. Although there were observed differences in the length of the lag time, the amount of ultimately dechlorinated PCE was similar. Of the fatty acids tested in the mixture, butyrate oxidation appeared to be the most probable link to PCE dechlorination. (Copyright (c) Pergamon Press 1994.)

• Research Organization: Environmental Protection Agency, Ada, OK (United States). Robert S. Kerr Environmental Research Lab.
• OSTI ID: 7285967
• Report Number(s): PB-94-162765/XAB; EPA--600/J-94/171
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
AROMATICS
CARBOXYLIC ACIDS
CHEMICAL REACTIONS
CHLORINATED AROMATIC HYDROCARBONS
DECHLORINATION
DEHALOGENATION
HALOGENATED AROMATIC HYDROCARBONS
KINETICS
ORGANIC ACIDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
REACTION KINETICS