Detection and Assessment of Natural Bitumen Sources in Ancient Mummy Resins

2021 ◽  
Vol 76 (6) ◽  
pp. 779-784
Author(s):  
E. B. Yatsishina ◽  
V. M. Pozhidaev ◽  
Ya. E. Sergeeva ◽  
V. M. Retivov ◽  
E. Yu. Tereshchenko ◽  
...  
Keyword(s):  
Natural Bitumen

scholarly journals Chemical Analysis on Mongolia’s Natural Bitumen

2014 ◽  
Vol 04 (02) ◽  
pp. 184-188
Author(s):  
Erdenetsogt Bat-Erdene ◽  
Batdelger Byambagar ◽  
Erdenee Enkhtsetseg ◽  
Budeebazar Avid
Keyword(s):  
Chemical Analysis ◽  
Natural Bitumen

scholarly journals High temperature transformation of tar-asphaltene components of oil sand bitumen

2017 ◽  
Vol 82 (9) ◽  
pp. 1063-1073 ◽  
Author(s):  
Yerzhan Imanbayev ◽  
Yerdos Ongarbayev ◽  
Yerbol Tileuberdi ◽  
Evgeniy Krivtsov ◽  
Anatoly Golovko ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Molecular Weight ◽  
Infrared Spectroscopy ◽  
Thermal Processing ◽  
Molecular Structures ◽  
Natural Bitumen ◽  
Oil Sand ◽  
Before And After ◽  
Temperature Transformation ◽  
Molecular Compounds

Transformations of high-molecular-weight compounds of oil sand natural bitumen under the heat treatment were studied in this work. For that purpose the natural bitumen isolated from oil sand taken from the Beke field (Kazakhstan) was used as a substrate. Thermal processing of natural bitumen leads to a general change in the chemical composition of components and to an increase in the output of certain fractions. The contents of oil, tar and asphaltenes were determined and the elemental composition of tar-asphaltene compounds was evaluated. Molecular structures of the tar and asphaltene components of natural bitumen before and after cracking have been defined from the data of elemental analysis, NMR spectroscopy and molecular weight. The high molecular compounds were presented as giant molecules containing small aromatic islands some of which were linked by aliphatic chains, that was proved by infrared spectroscopy.

scholarly journals Biodegradation of natural bitumen by Providencia stuartii isolated from heavy oil contaminated soil

2017 ◽  
Vol 19 (2) ◽  
pp. 353-358
Keyword(s):  
Optical Density ◽  
Heavy Oil ◽  
Degradation Products ◽  
Polluted Soil ◽  
Gas Chromatography Mass Spectrometry ◽  
Natural Bitumen ◽  
Soil P ◽  
Independent Variables ◽  
Providencia Stuartii ◽  
New Compounds

Abundance and availability of unconventional petroleum has led to intensified exploitation and exploration of the bitumen reserves. This has however led to environmental pollution. This study investigated the ability of Providencia stuartii isolated from heavy oil polluted soil to degrade natural bitumen. Temperature, pH and incubation period were independent variables used for optimization of degradation while optical density was used as dependent variable. Optical density was measured using a UV-Vis spectrophotometer. Residual bitumen/degradation products were analyzed using gas chromatography- mass spectrometry (GC-MS). Optical densities obtained ranged from 0.002 to 0.408. Optimum optical density of 0.408 was obtained at 40 oC and pH 7 after 13 days of incubation. There were significant changes in the composition of bitumen after analysis with GC-MS with detection of new compounds due to degradation. The GC-MS results showed the presence of some degradation products such as benzene (1-butylhexyl), benzene (1-propylheptyl) and 23, 28-bisnor-17.β.(h)-hopane. This study revealed the excellent ability of P. stuartii in degrading bitumen contaminated environment.

scholarly journals Study of Natural Bitumen of Nagornoye Deposit, Troitskneft JSC (the Republic of Tatarstan, Russian Federation) aimed at Processing Options Determination

2014 ◽  
Vol 11 (3) ◽  
Author(s):  
Alim Feizrakhmanovich Kemalov ◽  
Ruslan Alimovich Kemalov ◽  
Ilmira Maratovna Abdrafikova ◽  
Vasil Ilyasovich Gainullin
Keyword(s):  
Russian Federation ◽  
Natural Bitumen ◽  
The Republic
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