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High levels of dissolved metals in the environment includes active and
abandoned mine sites as well as industrial effluents also contribute to lead
contamination in both water and soil. As compared to the conventional
remediation techniques, biological methods are gaining prominence because of
their potential in providing a cost effective technology for heavy metal
remediation. Biopolymer produced by Bacillus licheniformis was investigated
with regard to remediation of lead metal ion. Biopolymer production was
optimum when grown in M9 medium, biopolymer from B licheniformis was
then used for bio sorption of lead metal ion at neutral pH range, 95-98% of
biosorption was observed in case of 10 ppm and 50 ppm lead metal ions, this
study shows utility of biopolymers in bioremediation of lead metal ions.​