Repository of Research and Investigative Information

Repository of Research and Investigative Information

Ahvaz Jundishapur University of Medical Sciences

Bioremediation of Pyrene-Contaminated Soils Using Biosurfactant

Jorfi, Sahand and Rezaee, Abbas and Jaafarzadeh, Nemat Alah and Esrafili, Ali and Akbari, Hamideh and Moheb Ali, Ghasem Ali (2014) Bioremediation of Pyrene-Contaminated Soils Using Biosurfactant. Jentashapir Journal of Health Research, 5.

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Background: Polycyclic aromatic hydrocarbons (PAHs) are persistence organic chemicals with proved carcinogenic and mutagenic hazards. These compounds are usually adsorbed in soils in vicinity of oil and gas industries. Bioremediation of PAHs contaminated soils is difficult due to hydrophobic nature of PAHs. Objectives: The main purpose of the current study was to determine the pyrene removal efficiency in synthetically contaminated soil, using biosurfactant. Materials and Methods: Four pure bacterial strains capable of pyrene degradation were isolated from contaminated soils via enrichment techniques. The soil samples were spiked with an initial pyrene concentration of 500 mg/kg and subjected to bioremediation using a mixed culture comprised of previously isolated strains, in addition to application of biosurfactant during 63 days. Results: The pyrene removal efficiency in samples containing biosurfactant, without biosurfactant and controls, were 86.4%, 59.8% and 14%, respectively, after 63 days. The difference of pyrene removal efficiency between the biosurfactant-containing samples and the ones without it was significant (P < 0.05). Conclusions: Application of rhamnolipid biosurfactant produced by Pseudomonas aeruginosa significantly improved pyrene removal in contaminated soils.

Item Type: Article
Keywords: Keywords:Bioremediation; Soil Pollution; Pyrene; Biosurfactant
Subjects: Q Science > Q Science (General)
Divisions: Faculty of Medicine, Health and Life Sciences > School of Medicine
Depositing User: آقای بهرام سوسنی غریب وند
Date Deposited: 06 Feb 2018 04:59
Last Modified: 06 Feb 2018 04:59

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