Enhanced Removal of Lead from Soil Using Biosurfactant Derived from Edible Oils

Thenmozhi, A and Devasena, M (2021) Enhanced Removal of Lead from Soil Using Biosurfactant Derived from Edible Oils. Soil and Sediment Contamination: An International Journal, 30 (2). pp. 135-147. ISSN 1532-0383

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Abstract

Lead contamination in soil due to anthropogenic activities has amplified and therefore, remediation is of prime significance due to its nonbiodegradability and toxicity effects. This study focuses on lead removal from the soil collected from a rifle range using biosurfactants produced from native microorganisms and edible oils. Native microorganisms in contaminated soil served as a source for biosurfactant production aided by edible vegetable oils such as palm oil and gingelly oil. Preliminary isolation and characterization studies indicated the presence of Pseudomonas aeruginosa that produced biosurfactant and removed lead simultaneously. Batch adsorption experiments showed 96%–99.6% of lead adsorption following Langmuir isotherm model. Lead desorption of 23.6% occurred without biosurfactant. Whereas in the presence of biosurfactants, enhanced desorption of 62.3% was observed. Of both palm oil and gingelly oil derived biosurfactants, the former reached a lead removal efficiency of 93.6% indicating the feasibility and effectiveness of the biosurfactants for contaminated site remediation.

Item Type: Article
Subjects: B Civil Engineering > Carbon nanotubes,Nanoparticles,Nanostructured materials
B Civil Engineering > Infrastructure Engineering
Divisions: Civil Engineering
Depositing User: Users 5 not found.
Date Deposited: 08 May 2024 08:14
Last Modified: 08 May 2024 08:14
URI: https://ir.psgitech.ac.in/id/eprint/522

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