microbial enhanced oil recovery using biosurfactant produced by alcaligenes faecalis

Authors

hossein salehizadeh

saleh mohammadizad

abstract

a bacterial strain (designated as alcaligenes sp. ms-103) isolated from oil sample of the aghajari oilfield in the south of iran, was able to produce an effective extracellular lipopolysaccharide biosurfactant (1.2±0.05 g/l) on molasses as a sole carbon source. the highest surface tension reduction to level 20 mn/m was achieved by biosurfactant produced by cells grown on molasses under optimum conditions. the optimum values of carbon to nitrogen ratio (c/n), salinity, ph and temperature for biosurfactant production were determined as 60:1, 7.5%, 7.0 and 50°c, respectively. biosurfactant flooding experiments were carried out on both fractured and unfractured carbonate cores. the highest recovery of residual oil among different experiments was about 10.7% in the unfractured cores. oil displacement indicates that recovery of crude oil can be increased by 9.2% from fractured core with a permeability of 12 md. the results showed that the biosurfactant produced by alcaligenes sp. ms-103 has the potential for industrial applications and may be used in microbial enhanced oil recovery (meor).

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

Microbial Enhanced Oil Recovery Using Biosurfactant Produced by Alcaligenes faecalis

A bacterial strain (designated as Alcaligenes sp. MS-103) isolated from oil sample of the Aghajari oilfield in the south of Iran, was able to produce an effective extracellular lipopolysaccharide biosurfactant (1.2±0.05 g/l) on molasses as a sole carbon source. The highest surface tension reduction to level 20 mN/m was achieved by biosurfactant produced by cells grown on molasses under optimum ...

full text

Optimization and characterization of biosurfactant production by Bacillus subtilis isolates towards microbial enhanced oil recovery applications

Biosurfactant production by three Bacillus subtilis strains (#309, #311 and #573) isolated from Brazilian crude oils was optimized based on different carbon and nitrogen sources. The lowest surface tension values were obtained using sucrose containing media for the three isolates. Biosurfactants produced by each strain were characterized by Fourier transform infrared spectroscopy (FTIR), proton...

full text

Microbial enhanced heavy crude oil recovery through biodegradation using bacterial isolates from an Omani oil field

BACKGROUND Biodegradation is a cheap and environmentally friendly process that could breakdown and utilizes heavy crude oil (HCO) resources. Numerous bacteria are able to grow using hydrocarbons as a carbon source; however, bacteria that are able to grow using HCO hydrocarbons are limited. In this study, HCO degrading bacteria were isolated from an Omani heavy crude oil field. They were then id...

full text

Nitrogen compounds utilized by Alcaligenes faecalis.

Conn (1942) observed that Alcaligenes faecalis required organic nitrogen, but as observed by Porter (1946) no report was found of a study of nitrogen compounds suitable for continued growth of A. faecalis. It was reported, however, that this organism grew in a medium containing NH4 lactate as a source of nitrogen and carbon (Braun and Cahn-Bronner, 1921), and used NH4NO3, asparagine, cysteine, ...

full text

Microbial Enhanced Oil Recovery, Wettability Alteration and Interfacial Tension Reduction by an Efficient Bacterial Consortium, ERCPPI-2

In the present study, the potential of a bacterial consortium of Enterobacter cloacae and Pseudomonas sp. (ERCPPI-2) for microbial enhanced oil recovery was investigated. Various mechanisms of enhanced oil recovery (EOR) as a result of using ERCPPI-2 and its metabolic products were studied in detail. The obtained results showed that under simulated reservoir ...

full text

A Pore Scale Evaluation of Produced Biosurfactants for Ex-situ Enhanced Oil Recovery

Microbial enhanced oil recovery (MEOR) is an economical method used to improve the oil recovery from reservoirs. In the MEOR techniques, by applying different microorganisms, a variety of products such as bioacid, biogas, biosurfactant, and biopolymer are generated, among which biosurfactant, one of the important metabolites, is produced by bacteria. It is worthy to note that bacteria are suita...

full text

My Resources

Save resource for easier access later


Journal title:
iranian journal of biotechnology

Publisher: national institute of genetic engineering and biotechnology

ISSN 1728-3043

volume 7

issue 4 2009

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023