Isolation and characterization of chromate resistant bacteria from tannery effluent.

The tannery effluent emanating from Common Effluent Treatment Plant (CETP), Unnao (U.P, India) was found toxic in nature, having high BOD, COD, TDS and Cr content (5.88 mg l(-1)), which supported growth of chromate tolerant bacteria. Several chromate tolerant bacteria have been isolated from these effluent and maximum tolerant four strains (NBRIP-1, NBRIP-2, NBRIP-3 and NBRIP-4) were characterized in this study. These strains showed multiple metal and antibiotic resistances. Growth of these strains was reduced at higher Cr concentration with extention of lag phase. Chromium accumlulation by these isolates may have a great potential in recovery and detoxification of Cr from tannery effluent.

[1]  A. Tripathi,et al.  Bioremediation of toxic chromium from electroplating effluent by chromate-reducing Pseudomonas aeruginosa A2Chr in two bioreactors , 2002, Applied Microbiology and Biotechnology.

[2]  Terry J. Beveridge,et al.  Chromate Reduction by a Pseudomonad Isolated from a Site Contaminated with Chromated Copper Arsenate , 2001, Applied and Environmental Microbiology.

[3]  A. Shakoori,et al.  Hexavalent chromium reduction by a dichromate-resistant gram-positive bacterium isolated from effluents of tanneries , 2000, Applied Microbiology and Biotechnology.

[4]  R. Lin,et al.  Mutational spectrum induced by chromium(III) in shuttle vectors replicated in human cells: relationship to Cr(III)-DNA interactions. , 1997, Chemical research in toxicology.

[5]  S. Bhattacharya,et al.  Isolation and Characterization of Chromium-Resistant Bacteria from Tannery Effluents , 1997, Bulletin of environmental contamination and toxicology.

[6]  K. Paknikar,et al.  Microbiological process for the removal of Cr(VI) from chromate-bearing cooling tower effluent , 1996, Biotechnology Letters.

[7]  T. Beveridge,et al.  Reduction of Cr(VI) by a Consortium of Sulfate-Reducing Bacteria (SRB III) , 1994, Applied and environmental microbiology.

[8]  G. Gadd,et al.  Microbial treatment of metal pollution--a working biotechnology? , 1993, Trends in biotechnology.

[9]  C. Forster,et al.  Removal of hexavalent chromium using sphagnum moss peat , 1993 .

[10]  H. Kozłowski,et al.  In vitro interaction of mutagenic chromium(VI) with red blood cells , 1989, FEBS letters.

[11]  Henry L. Ehrlich,et al.  Chromate resistance and reduction in Pseudomonas fluorescens strain LB300 , 1988, Archives of Microbiology.

[12]  M. Ajmal,et al.  Acute toxicity of chrome electroplating wastes to microorganisms: adsorption of chromate and chromium(VI) on a mixture of clay and sand , 1984 .

[13]  R. Seidler,et al.  Association of metal tolerance with multiple antibiotic resistance of bacteria isolated from drinking water , 1984, Applied and environmental microbiology.

[14]  W. Strohl,et al.  Hexavalent chromium-resistant bacteria isolated from river sediments , 1983, Applied and environmental microbiology.

[15]  H. Horitsu,et al.  Isolation of potassium chromate-tolerant bacterium and chromate uptake by the bacterium. , 1978 .

[16]  A. Bauer,et al.  Antibiotic susceptibility testing by a standardized single disk method. , 1966, American journal of clinical pathology.

[17]  H. Painter.  Biological degradation and bioremediation of toxic chemicals , 1996 .

[18]  H. Eccles,et al.  Removal of heavy metals from effluent streams : why select a biological process ? , 1995 .

[19]  S. Silver,et al.  Plasmid chromate resistance and chromate reduction. , 1992, Plasmid.

[20]  S. Silver,et al.  Plasmid-mediated heavy metal resistances. , 1988, Annual review of microbiology.

[21]  R. J. Bartlett,et al.  Behavior of chromium in soils. III. Oxidation , 1979 .

[22]  S. Silver,et al.  Microbial transformations of metals. , 1978, Annual review of microbiology.