Bioremediation of Synthetic Pyrethroid by Hydrolases of Bacillus aryabhattai and Bacillus circulans Derived from Indigenous Soil

  • Huma Farooq Institute of Environmental Sciences and Engineering (IESE), School of Civil and Environmental Engineering (SCEE), National University of Sciences and Technology (NUST), H-12 Sector, Islamabad, Pakistan
  • Mehwish Khalid Institute of Environmental Sciences and Engineering (IESE), School of Civil and Environmental Engineering (SCEE), National University of Sciences and Technology (NUST), H-12 Sector, Islamabad, Pakistan
  • Imran Hashmi Institute of Environmental Sciences and Engineering (IESE), School of Civil and Environmental Engineering (SCEE), National University of Sciences and Technology (NUST), H-12 Sector, Islamabad, Pakistan
Keywords: Bioremediation, Lambda cyhalothrin, Minimal salt medium, Optical density, Pyrethroids, Pesticide


Synthetic pyrethroids are widely used for the improvement of crop production but are also regarded as potentially harmful pollutants. The present study aimed to evaluate the efficiency of different indigenous soil bacteria to degrade Lambda Cyhalothrin (LC), a known synthetic pyrethroid. The sampling area was selected as Rawal Lake and soil samples were collected from alongside upper streams that flow into Lake. LC degrading bacterial strains were isolated and identified as Bacillus aryabhattai and Bacillus circulans. COD was used as a parameter for measuring % the removal of LC at different intervals. Bacillus aryabhattai showed % removal of 55% whereas, Bacillus circulans showed a % removal of 83% in Minimal Salt Media after 72 hours. This study revealed that Bacillus circulans may tolerate LC more effectively at higher concentrations and therefore may be used as potential hydrolyzing enzymes that may disrupt chemical bonds of pyrethroid and result in the reduction of toxicity. This work exhibited a promising approach for the bioremediation of LC and may hence be used as environmental bioremediations of other pyrethroids as well.


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How to Cite
Farooq, H., Khalid, M., & Hashmi, I. (2022). Bioremediation of Synthetic Pyrethroid by Hydrolases of Bacillus aryabhattai and Bacillus circulans Derived from Indigenous Soil. Journal of Environmental Treatment Techniques, 10(3), 187-194.
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