Published on June 2024 | Bio-remediation , water pollution

Optimize Biosorption Potential of Micrococcus luteus on Arsenic, Lead, and Mercury obtained from Coal mine

The main aim of the study was to find the metal biosorption capability of arsenic, lead, and mercury- resistant bacteria Micrococcus luteus isolated from heavy metal-contaminated soil of Mand coalfield Raigarh. Bacteria were screened for multiple heavy metal resistance capabilities through enumeration on LB agar containing 300 ppm Pb(NO3)2 2, NaAsO2, and HgCl2 separately. M. luteus showed high biosorption ability against Pb(II) (95.21%), As(III) (90.23%), and Hg(II) (80.67%), analyzed using ICP-MS. The effect of pH, temperature, and metal concentrations on the biosorption potential was also determined. The optimum condition of lead, arsenic, and mercury at pH 4.30, 4.80 and 5.0 respectively, the temperature at 37oC and metal concentration As(III) (260mM/L), Hg(II) (240mM/L), and Pb(II) (340mM/L) by M. luteus was studied. The present study indicates that M. luteus removes arsenic, lead, and mercury competently from soil contaminated with heavy metals, and therefore further research should explore to remediation of soil contaminated with heavy metals.