Repository of Research and Investigative Information

Repository of Research and Investigative Information

Ahvaz Jundishapur University of Medical Sciences

Application of Biosurfactants Produced by Pseudomonas aeruginosa SP4 for Bioremediation of Soils Contaminated by Pyrene

Jorfi, S. and Rezaee, A. and Mobeh-Ali, G. A. and Jaafarzadeh, N. A. (2013) Application of Biosurfactants Produced by Pseudomonas aeruginosa SP4 for Bioremediation of Soils Contaminated by Pyrene. Soil & Sediment Contamination, 22 (8). pp. 890-911. ISSN 1532-0383

Full text not available from this repository.
Official URL: <Go to ISI>://WOS:000320018200004

Abstract

Biosurfactants are considered to facilitate PAHs dissolution in soil slurries for bioremediation applications. In this work, the carbon and nitrogen sources, pH, C/N ratio, and salinity, were considered for optimization of biosurfactant production by Pseudomonas aeruginosa SP4 isolate to enhance pyrene removal from the contaminated soil. Analysis of ANOVA indicated that the carbon source was the most effective factor, followed by pH, nitrogen source, C/N ratio, and salinity. Taguchi experimental design proposed the optimum operating conditions of olive oil, NH4NO3, C/N ratio of 5, salinity of 0.5, and pH 7. Applying the conditions determined by Taguchi design led to a production yield of 452mg L-1 (13 improvement) at the optimum conditions. The main characteristics of produced biosurfactant included the critical micelle concentration (CMC) of 60mg L-1 and liquid medium surface tension of 29.5 mN m(-1). Produced biosurfactant was used for bioremediation of soil artificially contaminated with 500mg kg(-1) of pyrene. Following the addition of 250mg L-1 biosurfactant, the pyrene removal of 84.6 was obtained compared to 59.8 for control sample without any surfactant.

Item Type: Article
Keywords: biosurfactant bioremediation pyrene soil contamination taguchi design polycyclic aromatic-hydrocarbons photocatalytic degradation degrading bacteria marine bacterium taguchi method oil remediation biodegradation surfactants optimization
Subjects: R Medicine > R Medicine (General)
Divisions: Faculty of Medicine, Health and Life Sciences
Depositing User: مهندس مهدی شریفی
Last Modified: 01 Jun 2018 11:26
URI: http://eprints.ajums.ac.ir/id/eprint/13569

Actions (login required)

View Item View Item