Cadmium Resistance and Accumulation Potential of Klebsiella pneumoniae Strain CBL-1 Isolated from Industrial Wastewater
نویسنده
چکیده
A bacterium, Klebsiella pneumoniae CBL-1, was isolated from heavy metal laden industrial wastewater and could tolerate Cd (1500μg/mL), Cr (800μg/mL), Cu (600μg/mL), Pb (700μg/mL), Zn (800μg/mL) and Ni (1000μg/mL). K. pneumoniae showed optimum growth at 30oC and pH at 7. K. pneumoniae could decrease 46%, 68%, 83% and 93% of cadmium (100μg/mL) from the medium after 24, 48, 72 and 96 hours, respectively. K. pneumoniae was also capable to remove 54% and 82% cadmium from the industrial effluents after 4 and 8 days of incubation at room temperature. Multiple metal tolerance and high Cd accumulation by K. pneumoniae indicates its potential application in biological treatment of wastewaters contaminated with heavy metals.
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