Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8405715 | Biocatalysis and Agricultural Biotechnology | 2018 | 24 Pages |
Abstract
Biosurfactants are the superb alternates for chemical surfactants due to non-toxicity, biodegradability and cost-effectiveness. The present study describes the biosurfactant production from two isolates Bacillus amyloliquefaciens SAS-1 and Bacillus subtilis BR-15. The produced biosurfactants were characterized by fourier transform infrared spectroscopy and mass spectrometry as lipopeptides, surfactins of molecular weight 1007, 1021, 1035 and 1049â¯Da. These molecules displayed an excellent emulsification (E24 60-78%) with hydrocarbons and stability at wide temperature (4-100â¯Â°C) and pH (4-10). The biosurfactants produced by SAS-1 and BR-15 accounted for 56.91â¯Â±â¯1.52 and 66.31â¯Â±â¯2.32% enhanced oil recovery respectively in sand pack column experiment on account of their high surface activity. Further, the biosurfactants efficiently augmented (75-94%) the engine oil degradation with microbial consortium, more than threefold as compared to that without biosurfactants (22-31%). Hence, the presented strains have high potential for environmental applications like enhancing oil recovery and bioremediation of oil spills.
Keywords
AOROOIPMEORESI-MSSPCCTABSDSCMCROSSORcetyltrimethylammonium bromideEOREnhanced oil recoverysecondary oil recoveryBacillusMicrobial enhanced oil recoveryBiosurfactantPore volumeoriginal oil in placeBioremediationsodium dodecylsulphateSurfactinFTIRFourier transform infrared spectroscopyCritical micellar concentration
Related Topics
Life Sciences
Agricultural and Biological Sciences
Agricultural and Biological Sciences (General)
Authors
Rajni Sharma, Jagdish Singh, Neelam Verma,