Biosurfactant-enhanced bioremediation of aged polycyclic aromatic hydrocarbons (PAHs) in creosote contaminated soil

Isolation and characterization of a bacterial strain Hydrogenophaga sp. PYR1 for anaerobic pyrene and benzo[a]pyrene biodegradation

“…4B and C. The transmittance peaks was around 3401 cm À1 , corresponding to O-H stretching and associated hydrogen bonds. 7 The peaks at 2929 cm À1 and 1406 cm À1 were ascribed to aliphatic C-H stretching and aliphatic C-H deformation vibrations, and the 27 These transmittance peaks of the biosurfactant were similar to that of lipopeptide biosurfactants in the previous studies by the FTIR scans analysis.…”

“…E 24 was measured according to the previous method reported with a slight modication. 27 Briey, a 5 mL anaerobic incubation broth was mixed with an equal volume of kerosene, and vortexed for 5 min followed by anaerobic incubation at 28 C for 24 h. The E 24 is given as percentage of height of emulsied layer (mm) divided by total height of the liquid column.…”

A high-throughput fluorescence-based assay for rapid identification of petroleum degrading bacteria

“…In contrast, strains like Pseudomonas sp. BSS might be more suitable for clean up of soils and water dominated by recalcitrant PAHs, where production of biosurfactants would be an asset (Bezza and Chirwa 2016).…”

Selection of oxidant doses for in situ chemical oxidation of soils contaminated by polycyclic aromatic hydrocarbons (PAHs): A review

“…At lower PAH concentrations or when the economic and/or social pressure is not great, bioremediation is the preferred option [128][129][130][131][132][133][134][135][136][137]. This technique is much more environmental friendly but also slower and poorly effective, As an alternative to thermal desorption and landfilling, current research is investigating the improvement of promising technologies such as use of (bio)surfactant [138][139][140][141] or biochar [142][143][144] prior to bioremediation, phytoremediation [145][146][147][148][149] or in situ chemical oxidation [57,[150][151][152]. In situ chemical oxidation (ISCO) have been increasingly proposed over the past decade because it is more energy efficient than thermal desorption and faster and more effective on HMW PAHs than bioremediation and phytoremediation.…”