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Abstract
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Article Information:
High Chromium Tolerant Bacterial Strains from Palar River Basin: Impact of Tannery Pollution
K. Sundar, R. Vidya, Amitava Mukherjee and N. Chandrasekaran
Corresponding Author: K. Sundar
Submitted: 2009 December, 23
Accepted: 2010 January, 10
Published: 2010 April, 20 |
Abstract:
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The basic survey study on tanneries and its pollution in the Palar river basin of Vellore District
showed that it has been contaminated with heavy metals especially chromium and salts. This study is to
improve our understanding to find the Cr contamination level and the ecology of heavy metal tolerance of the
native bacterial flora of our study area. Chromium tolerant strains were isolated from contaminated sediments,
water and effluents of various tanneries. The minimum and maximum concentration of chromium sediments
was in the range of 47.4 and 682.4 mg/L, with an average of 306.285 mg/L in the study area. Sixty-eight
chromium resistant bacterial strains were isolated and Maximum Tolerance Concentration (MTC) studies have
indicated that the tolerance concentrations of the isolates were in the range of 100-3300 mg/L. These bacterial
isolates were also checked for their resistance to other heavy metals like Ni, Pb, Zn, Fe and Cd. Eighty percent
of the isolates showed resistance to Ni, Pb, Zn, Fe at 100 ppm level and 45% had shown resistance to Cd. The
isolates also had shown tolerance to salt (NaCl) up to 9%. Significant note was found in the concentration of
chromium and in the chromium tolerance ability of the bacteria in the study area and these chromium tolerance
bacteria can be used as the indicator for the Cr contamination.
Key words: Cr tolerant bacteria, Palar river, tanneries, Vellore district, , ,
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Cite this Reference:
K. Sundar, R. Vidya, Amitava Mukherjee and N. Chandrasekaran, . High Chromium Tolerant Bacterial Strains from Palar River Basin: Impact of Tannery Pollution. Research Journal of Environmental and Earth Sciences, (2): Page No: 112-117.
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ISSN (Online): 2041-0492
ISSN (Print): 2041-0484 |
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