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Bioremediation of Heavy Metals Using Isolates of Filamentous Fungus Aspergillus fumigatus Collected from Polluted Soil of Kasur, Pakistan

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Author Affiliations

  • 1 Department of Environmental Sciences, Fatima Jinnah Women University, The Mall, Rawalpindi, PAKISTAN

Int. Res. J. Biological Sci., Volume 2, Issue (12), Pages 66-73, December,10 (2013)

Abstract

Microorganism executes major role in heavy metals biosorption from polluted soil and water. Heavy metals having relatively high density are toxic at low concentration. The concentration of heavy metals is increasing due to rapid industrialization. To control metal pollution biotechnology is being applied and biosorption is one of the processes of biotechnology. The study was conducted on the various isolates of highly tolerate filamentous fungal species, Aspergillus fumigatus isolated from polluted soil collected from Kasur district, Pakistan. Biosorption capacity of Aspergillus fumigatus was investigated against metals viz. lead (Pd), chromium (Cr), cadmium (Cd), nickel (Ni), copper (Cu) and zinc (Zn) at constant pH 5 and temperature 30 ºC and at 200ppm, 400ppm, 600ppm and 800ppm metal solution concentrations. The highest biosorption value (76.07) exhibited by A. fumigatus isolate K3 against Pb, followed by Cu (69.6) and Cr (40.0) at 800ppm metal concentration. The purpose of the present investigation was to investigate different fungal isolates absorption behavior towards various heavy metals toxic and detrimental to flora and fauna. The knowledge of present study will be helpful for further assessment and management of natural biosorbent (fungus) which could serve as an economical source of treating industrial effluents with toxic metallic ions.

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