Microbiological oxidation of high viscosity bitumen in soil; Eurasian Chemico-Technological Journal; Vol. 20, No. 2
| Parent link: | Eurasian Chemico-Technological Journal Vol. 20, No. 2.— 2018.— [P. 159-168 |
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| Autor corporatiu: | |
| Altres autors: | , , , |
| Sumari: | Title screen This paper presents the results of an investigation of microbiological oxidation in the model soil system of high viscosity bitumen from the Bayan-Erkhet deposit (Mongolia) with a high content of heteroelements. It is shown that bitumen, being a mixture of high molecular weight components, has no inhibitory effect on the indigenous soil microflora. Its active growth in the presence of oil products starts without adaptation and lasts for a good part of experiment resulting in 15‒30 fold excess of microorganisms over its reference number. The enzymatic activity of the contaminated soil increases by a factor of 1.5‒2.0, which indicates an assimilation of various hydrocarbon compounds. The weight analysis revealed that the biodegradation of oil products after 180 days of the experiment was 50% of the initial contamination at initial waste oil concentration 50 g/kg (5%). The analysis by IR spectroscopy revealed an accumulation of oxygen-containing compounds which are intermediate products of bio-oxidation of bitumen components. The method of chromatography-mass spectrometry (GC-MS) revealed the ability of aboriginal soil microflora to mineralize virtually all hydrocarbons contained in the bitumen under study. Their biodegradation ranges from 18 to 97%. It was shown by the GC-MS method that high-molecular heteroatomic components of bitumen (resins and asphaltenes) also undergo a microbial degradation, since their molecular structure changed after the destruction. Thus, the number of structural units in a hypothetical molecule and that of heteroatoms increased due to the high content of oxygen-containing structures. In addition, the ratio of hydrocarbons (oils), resins, and asphaltenes contained in the sample is also changed. |
| Idioma: | anglès |
| Publicat: |
2018
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| Matèries: | |
| Accés en línia: | https://doi.org/10.18321/ectj692 |
| Format: | Electrònic Capítol de llibre |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664372 |
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| 200 | 1 | |a Microbiological oxidation of high viscosity bitumen in soil |f D. A. Filatov, M. A. Kopytov, V. S. Ovsyannikova, E. A. Elchaninova | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 18 tit.] | ||
| 330 | |a This paper presents the results of an investigation of microbiological oxidation in the model soil system of high viscosity bitumen from the Bayan-Erkhet deposit (Mongolia) with a high content of heteroelements. It is shown that bitumen, being a mixture of high molecular weight components, has no inhibitory effect on the indigenous soil microflora. Its active growth in the presence of oil products starts without adaptation and lasts for a good part of experiment resulting in 15‒30 fold excess of microorganisms over its reference number. The enzymatic activity of the contaminated soil increases by a factor of 1.5‒2.0, which indicates an assimilation of various hydrocarbon compounds. The weight analysis revealed that the biodegradation of oil products after 180 days of the experiment was 50% of the initial contamination at initial waste oil concentration 50 g/kg (5%). The analysis by IR spectroscopy revealed an accumulation of oxygen-containing compounds which are intermediate products of bio-oxidation of bitumen components. The method of chromatography-mass spectrometry (GC-MS) revealed the ability of aboriginal soil microflora to mineralize virtually all hydrocarbons contained in the bitumen under study. Their biodegradation ranges from 18 to 97%. It was shown by the GC-MS method that high-molecular heteroatomic components of bitumen (resins and asphaltenes) also undergo a microbial degradation, since their molecular structure changed after the destruction. Thus, the number of structural units in a hypothetical molecule and that of heteroatoms increased due to the high content of oxygen-containing structures. In addition, the ratio of hydrocarbons (oils), resins, and asphaltenes contained in the sample is also changed. | ||
| 461 | |t Eurasian Chemico-Technological Journal | ||
| 463 | |t Vol. 20, No. 2 |v [P. 159-168 |d 2018 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a oil pollution | |
| 610 | 1 | |a highly viscous bitumen | |
| 610 | 1 | |a biodegradation | |
| 610 | 1 | |a aboriginal soil microflora | |
| 610 | 1 | |a hydrocarbon-oxidizing | |
| 610 | 1 | |a microorganisms | |
| 610 | 1 | |a enzyme activity | |
| 610 | 1 | |a saturated | |
| 610 | 1 | |a cyclic and aromatic hydrocarbons | |
| 610 | 1 | |a resins | |
| 610 | 1 | |a asphaltenes | |
| 610 | 1 | |a нефтяные загрязнения | |
| 610 | 1 | |a битумы | |
| 610 | 1 | |a биодеградация | |
| 610 | 1 | |a микрофлора | |
| 610 | 1 | |a почвы | |
| 610 | 1 | |a углеводороды | |
| 610 | 1 | |a микроорганизмы | |
| 610 | 1 | |a насыщенные углеводороды | |
| 610 | 1 | |a ароматические углеводороды | |
| 610 | 1 | |a смолы | |
| 610 | 1 | |a асфальтены | |
| 701 | 1 | |a Filatov |b D. A. | |
| 701 | 1 | |a Kopytov |b M. A. | |
| 701 | 1 | |a Ovsyannikova |b V. S. | |
| 701 | 1 | |a Elchaninova (El'chaninova) |b E. A. |c geologist |c Associate Professor of Tomsk Polytechnic University, Candidate of chemical sciences |f 1973- |g Elena Aleksandrovna |3 (RuTPU)RU\TPU\pers\35919 |9 19060 | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Инженерная школа природных ресурсов |b Отделение нефтегазового дела |3 (RuTPU)RU\TPU\col\23546 |
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