Volume No. 3 Issue No.: 4 Page No.: 1122-1127 April-June 2009

 

MICROBIAL REMEDIATION OF HEXAVALENT CHROMIUM FROM CHROMITE CONTAMINATED MINES OF SUKINDA VALLEY, ORISSA (INDIA)

 

Susmita Mishra*, Alok Prasad Das and Padma Seragadam

Department of Chemical Engineering, National Institute of Technology, Rourkela (INDIA)

 

Received on : March 04, 2009

 

ABSTRACT

 

Orissa has a rich belt of mineral deposits; particularly Cr (VI) contamination in the Sukinda mines region has been identified as a red alert area. Our objective was to explore the use of indigenous microbial populations in a soil heavily contaminated with Cr (VI). It was capable of catalyzing Cr (VI) reduction as well as grows in the Nickel environment, thereby decreasing Cr and Ni toxicity and bioavailability. For this purpose the soil samples are collected from different chromium contaminated sites of the Sukinda mines and the physio-chemical parameters are studied. The dilution plate-count method, using media amended with Cr (VI) at concentrations ranging from 50 to 250 mg/l was carried out for the isolation of the chromium resistant bacterial strains in the PYE medium. In association with this the strain was also studied its tolerance to heavy metals such as Ni.

 

Keywords : Hexavalent chromium, Contamination, Chromium resistant bacteria, Microbial remediation.

 

 

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