Removal of Pb by Fungus Aspergillus Fumigatus

Rohit Sharma, Anil Sharma, Raman Kumar
International Journal of Basic and Applied Biology   unpublished
Bioremediation of lead from industrial wastewater using metal resistant microbes offers a promising means to reclaim the waste in an economical and eco-friendly way. In the present study, we focused on isolation, screening and characterization of lead resistant microorganisms from sewage, sludge and industrial effluent. The highly resistant organisms were optimized under different processed conditions. A total of 15 fungal isolates showed tolerance up to 500 ppm of lead and could remove >80 %
more » ... ould remove >80 % of Pb (II) from batch cultures. Out of these 15 isolates, IF-3 had the greatest removal potential >90 %. Upon molecular identification the isolate IF-3 was identified as Aspergillus fumigates. Removal efficacy of Aspergillus fumigatus was further enhanced under optimized conditions with maximum Pb (II) removal of ~92% was attained at pH 5 and concentration of 100mg/l after 120 hrs. Further the removal was highest when supplemented with lactose and beef as carbon and nitrogen source respectively and could be effectively employed as a potential biosorbent removing Pb (II) form contaminated waters.