ENHANCED DECHLORINATION OF 2,3-CHLOROPHENOL IN AN ANAEROBIC BIOREACTOR BY ADDITION OF AUXILIARY CARBON-SOURCES

Addition of an auxiliary carbon source (sodium acetate, sodium lactate , or yeast extract) to microbial consortia from an anaerobic bioreacto r stimulated reductive dechlorination of 2,3-chlorophenol (CP) compare d to unamended consortia or consortia amended with sodium formate or s odium propionate. However, no significant effects on dechlorination of 3-CP were observed by addition of auxiliary carbon sources. In a cont inuous-flow, anaerobic bioreactor, addition of sodium lactate resulted in a 2 to 3-fold increase in the rate of dechlorination of 2,3-CP com pared to addition of sodium formate. Enhanced transformation of the de chlorination product (3-CP) was also evident.