Characterization of biosurfectants enhancing kerosene degradation

Aydın, Dilan Camille
İçgen, Bülent
Kerosene is a colorless flammable hydrocarbon liquid and it is obtained from the fractional distillation of petroleum [1]. It has numerous applications as fuel for jet engines, heating oil, solvent and insecticide [2]. Because of growing needs of kerosene production and extensive usage may end up with surface water contamination. Due to its high toxicity to biota, kerosene contamination requires remedial action to reduce environmental damage [3]. Biodegradation is an effective and eco-friendly method performed by hydrocarbon degrading bacteria. Some of hydrocarbon degrading bacteria have the ability to produce extracellular compounds called biosurfactants. Based on their diverse chemical structures, biosurfactants are classified as glycolipids, lipopeptides, phospholipids, fatty acids, neutral lipids, and polysaccharide–protein complexes [4]. Biosurfactants can reduce surface tension and emulsify hydrocarbons by enhancing the bioavailability. They also have advantages over chemical surfactants by having low toxicity, being biodegradable [5] and efficient even at extreme temperature or pH conditions [6]. Therefore, characterization of biosurfactants produced by hydrocarbon degraders is of great interest especially in environmental applications [4]. This study aimed at determining biosurfactants produced by kerosene degraders. Therefore, previously determined 19 kerosene degraders were primarily screened for their biosurfactant productivity against kerosene. In order to characterize the type of biosurfactant; Phenol-H2SO4, Biuret, Phosphate and CTAB/Methylene Blue Agar Plate tests were performed. All the isolates showed positive responses to CTAB/Methylene Blue Agar Plate test, confirming the production rhamnolipid biosurfactants [7]. These results were also justified with Fourier Transform Infrared (FTIR) Spectroscopy.
Proceedings of the 2nd World Congress on Civil, Structural, and Environmental Engineerings, 2017


Characterization of biosurfactants enhancing kerosene degradation
Aydin, Dilan Camille; İçgen, Bülent (2017-04-04)
Keroseneis a colorlessflammable hydrocarbon liquidandit is obtained from the fractional distillation of petroleum[1]. Ithas numerous applicationsas fuel for jet engines, heating oil, solvent andinsecticide[2].Because ofgrowing needs of kerosene production and extensive usage may endup with surface water contamination.Due to its hightoxicity to biota, kerosene contaminationrequires remedial action to reduce environmental damage[3].Biodegradation is an effective and eco-friendly methodperformedbyhydrocarb...
Gökağaç Arslan, Gülsün; KENNEDY, BJ; CASHION, JD; BROWN, LJ (1993-01-01)
Carbon-supported platinum oxide-tin oxide samples have been studied as electrocatalysts for methanol oxidation. The Teflon-bonded electrodes are found to be poor electrocatalysts. X-Ray photoelectron and Mossbauer spectroscopy, together with electron microscopy, have been used to determine the nature of the bimetallic crystallites. Differences in the activity of various Pt-Sn-containing electrodes for methanol oxidation are discussed.
Kinetic investigation of chemical vapor deposition of B4C on tungsten substrate
Karaman, Mustafa; Sezgi, Naime Aslı; Doğu, Timur; Ozbelge, H. Onder (2006-12-01)
Production of beta-rhombohedral boron carbide (B4C) on a tungsten substrate by the chemical vapor deposition from a BCl3-H-2-CH4 gas mixture was achieved. An impinging-jet reactor was used to minimize the mass-transfer limitations on the reaction kinetics, which made a detailed kinetic investigation possible. Results of the XRD and XPS analyses showed that the solid product formed on the substrate is a rhombohedral B4C phase. Both dichloroborane and boron carbide formation rates were found to increase with ...
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Soydaş, Belma; Kalıpçılar, Halil; Department of Chemical Engineering (2009)
Zeolite membranes are attractive materials to separate gas and liquid mixtures. MFI is a widely studied zeolite type due to its ease of preparation and comparable pore size with the molecular size of many substances. In this study MFI type membranes were synthesized over porous α-Al2O3 supports and characterized with XRD, SEM and gas permeation measurements. In the first part of this study the effect of soda concentration of the synthesis solution on the membrane morphology and crystal orientation was inves...
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A detailed parametric study of single-walled carbon nanotubes (SWNTs) synthesized in powder form and on substrates using the alcohol catalytic chemical vapour deposition (ACCVD) method is reported. As-grown SWNTs were analysed using transmission electron microscopy (TEM), field-emission scanning electron microscopy (FE-SEM), Raman spectroscopy and UV-vis-NIR spectroscopy to obtain structural and electronic information. We found that nucleation and growth of SWNTs occurs within seconds after introduction of ...
Citation Formats
D. C. Aydın and B. İçgen, “Characterization of biosurfectants enhancing kerosene degradation,” presented at the Proceedings of the 2nd World Congress on Civil, Structural, and Environmental Engineerings, 2017, Barcelona, Spain, 2017, Accessed: 00, 2021. [Online]. Available: