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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/19175
Title: Effective mycoremediation coupled with bioaugmentation studies: An advanced study on newly isolated Aspergillus sp. in Type-II pyrethroid-contaminated soil
Authors: Kaur P.
Balomajumder, Chandrajit
Published in: Environmental Pollution
Abstract: The intensive application of type-II pyrethroid worldwide in agricultural and residential practices potentially contributes to soil and water pollution, raising various concerns about environmental and public health. In the present study, robust fungus (strain PYR-P2) with high pyrethroids degradation potential was isolated from pesticide-contaminated soil. The strain was identified based on morphology and molecular characteristics, as Aspergillus sp. The screening of the transforming ability of strain PYR-P2 was evaluated in minimal salt media (MSM), where the fungus utilized up to 500 mg L of pyrethroid mixture (cypermethrin (CYP), cyfluthrin (CYF), cyhalothrin (CYH)). With this in view, central composite design (CCD) with three independent variables (pH, temperature, and initial concentration) was employed to identify the optimal conditions for achieving maximum pyrethroid removal. Under optimal conditions, strain PYR-P2 was implemented for the bioaugmentation studies in natural and sterile soil (NS/SS) systems spiked with pyrethroid (single and mixture) at a concentration of 100 mg kg . The highest pyrethroid removal percentages were observed in fungally augmented NS, accompanied by a decrease in pyrethroid half-life (t ). Herein, the observed half-life (t ) of pyrethroids in the fungally augmented NS varied between 1.48 and 2.69 d, with equally good values recorded in SS as 1.65–3.10 d. Taken together, the mycoremediation study employing fungal (strain PYR-P2) augmentation under optimized conditions represents an efficient strategy to restore pyrethroid-contaminated soil. −1 −1 1/2 1/2SCOPUS_ABS_SEPARATORThe newly isolated Aspergillus sp. (strain PYR-P2) was successfully employed in the pyrethroid-contaminated liquid and soil (natural and sterile) systems.
Citation: Environmental Pollution(2020), 261(): -
URI: https://doi.org/10.1016/j.envpol.2020.114073
http://repository.iitr.ac.in/handle/123456789/19175
Issue Date: 2020
Publisher: Elsevier Ltd
Keywords: Aspergillus
Cyfluthrin
Cyhalothrin
Cypermethrin
Kinetics
Mycoremediation
ISSN: 2697491
Author Scopus IDs: 57220708637
35615087500
Author Affiliations: Kaur, P., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Balomajumder, C., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Funding Details: The authors thank National Center for Microbial Resources, Pune, India, for 18S rRNA sequencing.
Corresponding Author: Kaur, P.; Department of Chemical Engineering, India; email: pkaur@ch.iitr.ac.in
Appears in Collections:Journal Publications [CH]

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