Bioremediation of Nickel and Iron from Solutions by Non-pathogenic Microorganisms

摘要

Bioremediation of nickel and iron from artificially introduced solutions by various non-pathogenic microorganisms was tested.The concentration of metal used was 100 mg/L.Viable Pseudomonas species and Bacillus species could remove 56.24 and 56.8% of nickel,respectively.There was 11.1-96.86% removal of iron by viable microorganisms,Aspergillus species with highest and Saccharomyces species with lowest percentage removal.The biosorption technique showed a range of 54.32-87.2% removal of nickel,with highest removal by Bacillus species.The biosorption of iron ranged from 60-100% with highest percentage removal by Aspergillus species.The percentage removal of nickel ranged from 54.8-92.4 and iron removal ranged from 73-95.68% by immobilization technique.The results of the present study indicate that these microorganisms are potential to remove nickel and iron from polluted waters,soils,industrial effluents,agricultural and municipal wastes.