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Degradation and mineralization of 3-chlorobiphenyl by a mixed aerobic bacterial culture

✍ Scribed by Fabio Fava; Leonardo Marchetti

Publisher
Springer
Year
1991
Tongue
English
Weight
685 KB
Volume
36
Category
Article
ISSN
1432-0614

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✦ Synopsis

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 m g / 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 3chlorobenzoic acid and a strain of Pseudomonasfluores- cens 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.

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Degradation of dimethylamine salt of 2,4
Degradation of dimethylamine salt of 2,4-dichlorophenoxyacetate by a mixed bacterial culture in stirred tank reactors
✍ Kye-Heon Oh; Min-Seok Cha πŸ“‚ Article πŸ“… 1996 πŸ› Springer Netherlands 🌐 English βš– 281 KB

An aerated microbiological process was tested in 1.5-1 stirred tank reactors for the treatment of dimethylamine salt of 2,4-dichlorophenoxyacetate (2,4-D). A mixed culture was used with the concentration range of 54 to 216 mg 2,4-D/t. The highest concentration was completely depleted within 6 to 8 d