scholarly journals Production of High Purity Biosurfactants Using Heavy Oil Residues as Carbon Source

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3557
Author(s):  
Athina Mandalenaki ◽  
Nicolas Kalogerakis ◽  
Eleftheria Antoniou

Typically, oil pollution cleanup procedures following first response actions include dispersion. Crude oil is biodegradable, and its bioavailability can be increased when dispersed into very fine droplets by means of chemical surfactants. Although their use is widely spread in many applications, the latter may prove toxic, depending on the extent of use. The use of biological means, such as bioremediation and biosurfactants, has emerged over the past years as a very promising ‘green’ alternative technology. Biosurfactants (BSs) are amphiphilic molecules produced by microorganisms during biodegradation, thus increasing the bioavailability of the organic pollutants. It is their biodegradability and low toxicity that render BSs as a very promising alternative to the synthetic ones. Alcanivorax borkumensis SK2 strain ability to produce BSs, without any impurities from the substrate, was investigated. The biosurfactant production was scaled up by means of a sequencing batch reactor (SBR) and a heavy oil residue substrate as the carbon source. The product is free from substrate impurities, and its efficiency is tested on oil bioremediation in the marine environment. The product’s dispersion efficiency was determined by the baffled flask test. The production method proposed can have a significant impact to the market, given the ever-increasing demand for ecologically friendly, reliable, commercially viable and economically competitive environmental cleanup techniques.

2021 ◽  
Vol 04 (1) ◽  
pp. 36-39
Author(s):  
R.R. Suyunov ◽  
◽  
M.I. Laser ◽  

The innovative technology MELANGETM allows produce of the bitumen in one stage with the required properties, according to the technical request of the Customer, from the heavy oil residue basis on the use of physical and induced by them chemical processes. In this case, the main physical processes are heating and homogenization of various heavy residues upon heating, that is, mechanical mixing, almost to an ideal state, in parallel with the addition of a polymer capable of forming long spirals and chains in dispersed media. The experimental work was the basis for the trial production of bitumen according to the European standard BDS EN12591: 2009, which was successfully implemented using the MELANGETM technology at the LUKOIL Neftochim Burgas AD refinery (Burgas, Bulgaria). The heavy unreacted fluidized bed hydrocracking (VTB) residue of the Axens France H-oil process was used as feedstock. Based on the results of experimental work and the basis of confirmed data from the Customer, a patent of the Russian Federation No. 272118 " Method of producing road bitumen from a heavy residue" was issued. MELANGETM technology allows solving the problem of utilizing low-margin heavy oil residues, including unconverted residues from high conversion of oil residues, into high-margin products such as road bitumen and bituminous binders.


2008 ◽  
Vol 23 (5) ◽  
pp. 1393-1397 ◽  
Author(s):  
Yongzhen Yang ◽  
Xuguang Liu ◽  
Bingshe Xu

Fe-encapsulating carbon nano onionlike fullerenes (NOLFs) were obtained by chemical vapor deposition (CVD) using heavy oil residue as carbon source and ferrocene as catalyst precursor in an argon flow of 150 mL/min at 900 °C for 30 min. Field-emission scanning electron microscopy (FE-SEM), high-resolution transmission electron microscopy (HRTEM), energy-dispersive spectroscopy (EDS), x-ray diffraction (XRD), and Raman spectroscopy were used to characterize morphology and microstructure of the products. The results show that Fe-encapsulating NOLFs collected at the outlet zone of quartz tube had core/shell structures with sizes ranging from 3 to 6 nm and outer shells composed of poorly crystallized graphitic layers. Their growth followed particle self-assembling growth mechanism, and all atoms in the graphite sheets primarily arose from Fe-carbide nanoparticles.


2019 ◽  
Vol 21 (3) ◽  
pp. 633-641 ◽  
Author(s):  
Kairat Burkhanbekov ◽  
Yermek Aubakirov ◽  
Zheneta Tashmukhambetova ◽  
Tleutay Abildin

Author(s):  
Boris Bachurin ◽  

Introduction. Dusty surfaces insulation with preventive emulsions based on heavy oil residue (HOR) is a promising environmental technology in open-pit mining. To assess the environmental safety of these emulsions, it is required to assess the possible scale of organic pollutants emission into the technogenic leakage fluxes occurring due to the interaction of HOR insulation with precipitation. Research aim is to assess the scale of organic pollutants leaching occurring due to the interaction of HOR insulation with precipitation. Research methods. Laboratory modeling of HOR samples and water interaction and assessment of the scale of organic compounds (bitumen and oil products) discharge into the water environment. Results. Studies have shown that the addition of an insulating emulsion based on heavy oil residue leads to the creation of an organo-mineral mixture with hydrophobic properties, determining low solubility of hydrocarbons in water and posing no threat of excess organic pollution to the hydrosphere.


2017 ◽  
Vol 53 (2) ◽  
pp. 197-204
Author(s):  
V. P. Zaporin ◽  
S. V. Sukhov ◽  
M. Yu. Dolomatov ◽  
N. A. Zhuravleva ◽  
A. R. Galiakbirov ◽  
...  

2001 ◽  
Vol 2 (4) ◽  
pp. 178-183 ◽  
Author(s):  
Young Ok Choi ◽  
Kap Seung Yang

2018 ◽  
Vol 54 (3) ◽  
pp. 328-333
Author(s):  
A. P. Mamedov ◽  
Ch. K. Rasulov ◽  
Ch. K. Salmanova ◽  
S. F. Ahmadbekova ◽  
R. Z. Bagirzade ◽  
...  

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