Physicochemical characterization and optimization of glycolipid biosurfactant production by a native strain of Pseudomonas aeruginosa HAK01 and its performance evaluation for the MEOR process.

ABSTRACT: In this study, a glycolipid type of biosurfactant (BS) was produced, its characteristics were evaluated and several flooding tests were conducted in a micromodel to investigate its potential for enhancing oil recovery. A rhamnolipid BS producer strain was identified as a bacterium belonging to the genus Pseudomonas aeruginosa. This BS showed good stability at temperatures of 40-121 °C, pH values of 3-10 and salinity up to 10% (w/v) NaCl which is important in Microbial Enhanced Oil Recovery (MEOR). The rhamnolipid decreased the surface tension of water from 72 to 28.1 mN m^-1 with a critical micelle concentration of 120 ppm. Thin layer chromatography, FTIR spectroscopy, ¹H-NMR and ¹³C-NMR spectroscopy revealed the glycolipid structure of the BS. Respon

SUBMITTER: Khademolhosseini R 

PROVIDER: S-EPMC9061253 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature