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Au-Interaction of Slp1 Polymers and Monolayer from Lysinibacillus sphaericus JG-B53 - QCM-D, ICP-MS and AFM as Tools for Biomolecule-metal Studies
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Simultaneous bioaccumulation of multiple metals from electroplating effluent using Aspergillus lentulus.

Abhishek Mishra1, Anushree Malik

  • 1Applied Microbiology Lab, Centre for Rural Development and Technology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110 016, India.

Water Research
|July 24, 2012
PubMed
Summary

This study shows Aspergillus lentulus can remove multiple heavy metals like chromium, copper, and lead from industrial wastewater. This fungus offers a promising biological solution for treating complex metal-containing effluents.

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Area of Science:

  • Environmental Microbiology
  • Bioremediation
  • Industrial Biotechnology

Background:

  • Heavy metal contamination from industrial effluents poses significant environmental risks.
  • Existing heavy metal remediation methods often struggle with complex industrial wastewater containing multiple metal ions.
  • Limited research explores microbial potential for simultaneous removal of diverse heavy metals from industrial effluents.

Purpose of the Study:

  • To investigate the efficiency of Aspergillus lentulus in simultaneously removing chromium (Cr), copper (Cu), and lead (Pb) from electroplating industry effluent.
  • To assess the tolerance and bioaccumulation capabilities of A. lentulus against heavy metals.
  • To evaluate the application of A. lentulus for treating real industrial wastewater.

Main Methods:

  • Isolation and identification of the environmental fungal strain Aspergillus lentulus (FJ172995).
  • Testing A. lentulus tolerance and bioaccumulation of Cr, Cu, Pb, and Nickel (Ni) in synthetic solutions.
  • Application of A. lentulus for treating electroplating industrial effluent after pH adjustment.
  • Monitoring metal concentration reduction over time in both synthetic and real effluent samples.

Main Results:

  • Aspergillus lentulus demonstrated high tolerance to Cr, Cu, and Pb, with significant bioaccumulation observed.
  • In synthetic solutions, removal efficiencies after 5 days were: Pb(2+) (100%) > Cr(3+) (79%) > Cu(2+) (78%) > Ni(2+) (42%).
  • In electroplating effluent, A. lentulus achieved 71% Cr removal, 56% Cu removal, and 100% Pb removal within 11 days.

Conclusions:

  • Aspergillus lentulus is effective for the simultaneous bioremediation of multiple heavy metals from industrial effluents.
  • The study highlights the potential of A. lentulus as a cost-effective and environmentally friendly solution for treating heavy metal pollution.
  • Fungal bioaccumulation offers a viable strategy for managing complex metal mixtures in industrial wastewater.