Degradation and mineralization of 3-chlorobiphenyl by a mixed aerobic bacterial culture.
A mixed bacterial culture obtained from polychlorinated-biphenyl-contaminated river sediments proved capable of degrading 3-chlorobiphenyl (3-CB) under aerobic laboratory conditions. Almost total mineralization of 150 mg/l of 3-CB occurred when, after 3 days of incubation, the mineral medium was supplied with benzoic acid as a carbon source. Two strains of Pseudomonas capable of degrading the substrate to 3-chlorobenzoic acid and a strain of Pseudomonas fluorescens capable of co-metabolizing this metabolite were selected from the mixed culture. A nearly stoichiometric amount of chloride, which defines the percentage of total mineralization, was eliminated during mixed culture growth.
Fava
F
F
Department of Applied Chemistry and Material Science, Engineering Faculty, University of Bologna, Italy.
Marchetti
L
L
D001420:Bacteria, Aerobic / Q000302:isolation & purification / Q000378:metabolism*; D001431:Bacteriological Techniques; D001673:Biodegradation, Environmental; D001713:Biphenyl Compounds / Q000378:metabolism*; D002712:Chlorides / Q000378:metabolism; D004785:Environmental Pollutants / Q000378:metabolism*; D011549:Pseudomonas / Q000302:isolation & purification / Q000378:metabolism; D011551:Pseudomonas fluorescens / Q000302:isolation & purification / Q000378:metabolism; D014871:Water Microbiology
D001713:Biphenyl Compounds; D002712:Chlorides; D004785:Environmental Pollutants; C034280:3-chlorobiphenyl