Isolation of hexavalent chromium-reducing Cr-tolerant facultative anaerobes from tannery effluent

Thiruneelakantan Srinath, Shilpi Khare, Pramod W. Ramteke
2001 Journal of General and Applied Microbiology  
Several facultative anaerobes tolerant to high levels of chromate (Ͼ400 m mg/ml) were isolated from tannery effluents. These isolates displayed varying degrees of Cr(VI) reduction under aerobic and anaerobic conditions at room temperature (24Ϯ2°C). Interestingly, eight isolates were efficient in reducing 70% Cr(VI) anaerobically. This includes 5 isolates of genus Aerococcus, two isolates of Micrococcus and single isolate of genus Aeromonas. These isolates were subjected to further
more » ... on for possible use in Cr(VI) detoxification of industrial wastes. This is the first report of Aerococcus sp. capable of Cr(VI) reduction Ͼ70% anaerobically. These bacteria were further checked for tolerance to a variety of other heavy metals. Our study indicates the possible use of these bacteria in environmental clean up.
doi:10.2323/jgam.47.307 pmid:12483605 fatcat:enn6l54gk5a27bzlwtuqbk3yfu