scholarly journals Field testing of immobilized oil-degrading microorganisms in the Zhanatalap field of Atyrau region

2020 ◽  
Vol 62 (5) ◽  
pp. 142-150
Author(s):  
Alibek A. Kaziev ◽  
◽  
Amantay Sh. Akzhigitov ◽  
Sofia Z. Sagyndykova ◽  
Azamat N. Nurlybekov ◽  
...  

Hydrocarbon-oxidizing microorganisms are widespread in natural ecosystems, since the ability to oxidize hydrocarbons is associated with the presence of enzymes of the oxidase group, with microorganisms using oil and oil products as the sole source of carbon and energy in the microbiological decomposition of hydrocarbons. The decomposition of oil and oil products in the soil under natural conditions is a biogeochemical process in which the functional activity of a complex of soil microorganisms that ensure the complete mineralization of oil and oil products to carbon dioxide and water is of crucial importance. The search for effective indigenous hydrocarbon-oxidizing microorganisms, the creation on their basis of a full-fledged specialized consortium of microorganisms and their introduction into the initial, cleaned environment is one of the promising methods of purification with oil pollution in the oil-producing regions of Kazakhstan. Among the new biological methods for cleaning soil from oil pollution, the most promising are the use of a consortium based on immobilized microorganisms. A correctly selected carrier capable of sorption of petroleum hydrocarbons preserves and maintains attached cells in a viable state for a long time and protects them, especially at the initial stage of introduction, from adverse environmental conditions, which increases the efficiency of oil destruction. Hydrocarbon-oxidizing microorganisms have high emulsifying activity and sorption ability for expanded clay, optimal conditions for biomass accumulation are: temperature 28-30 °С, pH = 7 and 9. It is recommended to use a consortium of oil-degrading microorganisms based on the native strains of cultures Bacillus firmus S20, Bacillus subtilis PR28, Micrococcus roseus UD6-4, Micrococcus varians PR69 to clean the soils contaminated with oil and oil products in the Zhanatalap field in the Atyrau region. It should be noted that after 8 months at the Zhanatalap field in the Atyrau region, oil destruction amounted to 94.3% in the variant with the introduction of immobilized microorganisms on zeolite and expanded clay. The results of the research are the basis for further development of technology for the restoration of oil-contaminated soils in arid conditions of Kazakhstan.

2020 ◽  
Vol 17 ◽  
pp. 00179
Author(s):  
Elena Yu. Rudenko ◽  
Galina S. Mukovnina ◽  
Artem G. Kashaev ◽  
Olga E. Temnikova ◽  
Roman S. Mukovnin

The study of the economic efficiency of investments in the production of a mixture of brewing waste provides an opportunity to assess the possibility of its practical use for the restoration of soils contaminated with oil and oil products. The UNIDO methodology is applied to calculate the costeffectiveness of investments in the brewing waste drying line for the remediation of contaminated soils. Fulfillment of the underlying conditions for the effectiveness of investments and the absence of a negative balance in the financial plan indicate the efficiency and feasibility of investments.


Author(s):  
Juris Treijs ◽  
Edmunds Teirumnieks ◽  
Viktors Mironovs

The largest global pollution nowadays gives oil and oil products. This contamination poses a danger to the environment and aquatic eco-systems. Not only seas but also small water bodies and watercourses, as well as coastal areas, soil and groundwater are contaminated with oil products. Contamination results in destruction of some plants or animals, but in events of high oil contamination also of the entire ecosystem. Latvia has inherited the oil pollution from both the Soviet Union large-scale industry and its military facilities, as well as at present the oil products are getting into environment from petrol stations, accidents, and from the cross-border pollution. In many cases of oil spills, people are trying to collect them in order to have no impact on the environment, but unfortunately very often, even in most cases this does not occur. Financial resources, as well as the lack of appropriate technologies or restricted possibilities for their application are the limiting factors. The article deals with the traditional methods of oil collection in water and also describes options for decontamination of polluted soil from the oil products. A brief insight is provided into application of ferromagnetic sorbents, which is a new method for collection of oil and oil products.


2021 ◽  
Vol 7 (7) ◽  
pp. 31-38
Author(s):  
G. Sultanova ◽  
M. Abdullayeva

In this work, two biotechnological technologies were tested to restore contaminated soils using microorganisms. One technology with the activation of natural microflora and a technology that requires the introduction of oil-oxidizing microorganisms in the form of a biological product. When using biological methods of cleaning soil from oil pollution in combination with agrotechnical methods, the natural microflora of oil-polluted soils was activated. The introduction of a biological product under these conditions makes it possible to increase the intensity of soil cleaning from oil pollution as a result of the cleaning time in comparison with the natural microflora, it can be reduced by 3–4 months. It should be noted that the methods of cleaning oil-contaminated soils using microorganisms in arid soil-climatic conditions are most effective in the spring and until mid-summer. In the summer, due to high temperatures, the activity of microorganisms decreases. Microorganisms become active again in the autumn. During this period, the activity of microorganisms is higher than in the spring period and this is due to the fact that before the summer period the number of microorganisms increases and after a slight decrease in activity, intensive biodegradation of oil pollution continues again.


2021 ◽  
Vol 265 ◽  
pp. 02014
Author(s):  
Vladislava Perminova ◽  
Danil Vorobiev ◽  
Yulia Frank ◽  
Vladislav Perminov

The authors of the article draw the readers’ attention to the urgent problem that is the assessment of the pollution of bottom sediments of water bodies with hydrocarbons in the form of oil and oil products. When conducting surveys of water bodies, the determination of the content of oil or oil products in bottom sediments is expressed in grams per kilogram of precipitation in an air-dry state. Information in this form cannot be associated with the mass of oil at the bottom of the water body, what is very important when designing treatment works and calculating damage to aquatic biological resources. The method for determining the mass of oil pollution per unit area of bottom sediments of water bodies has been proposed and tested, what makes it possible to associate pollution not only with the concentration of pollutants, but also with the area of the reservoir.


Author(s):  
Alexander Krek ◽  
Alexander Krek ◽  
Elena Bulycheva ◽  
Elena Bulycheva ◽  
Andrey Kostianoy ◽  
...  

Ships, seeps from the seabed, municipal and industrial waste waters, and the atmosphere are the main sources of sea water contamination with oil and oil products. During the satellite monitoring of the Kravtsovskoe oilfield (D-6) (2004-2015) the area west of Sambia Peninsula and anchorage in front of entrance to Kaliningrad Sea Canal were localized as the most polluted area of the Southeastern Baltic Sea. Oil spill drift forecast from these areas with a help of Seatrack Web model (SMHI, HELCOM) has shown that the average annual direction of oil pollution drift is directed to the North-East. In some cases, leakage of oil or oil products from ships west of Sambia Peninsula could be a reason of oil contamination of beaches of the “Curonian Spit” National Park.


Author(s):  
Alexander Krek ◽  
Alexander Krek ◽  
Elena Bulycheva ◽  
Elena Bulycheva ◽  
Andrey Kostianoy ◽  
...  

Ships, seeps from the seabed, municipal and industrial waste waters, and the atmosphere are the main sources of sea water contamination with oil and oil products. During the satellite monitoring of the Kravtsovskoe oilfield (D-6) (2004-2015) the area west of Sambia Peninsula and anchorage in front of entrance to Kaliningrad Sea Canal were localized as the most polluted area of the Southeastern Baltic Sea. Oil spill drift forecast from these areas with a help of Seatrack Web model (SMHI, HELCOM) has shown that the average annual direction of oil pollution drift is directed to the North-East. In some cases, leakage of oil or oil products from ships west of Sambia Peninsula could be a reason of oil contamination of beaches of the “Curonian Spit” National Park.


2021 ◽  
Vol 937 (3) ◽  
pp. 032026
Author(s):  
R Akhtyamov ◽  
T S Titova ◽  
D V Glazkov ◽  
I I Gavrilin

Abstract The article provides an algorithm for organizing oil spill response on the water surface, as well as the results of the analysis of existing methods of oil and oil product spill response. In order to improve the complex of measures to eliminate oil spills on the water surface, the main requirements for oil-absorbing materials are given. It is shown that the localization and elimination of oil and oil products spills on the water surface due to the destruction of the underwater passage of the main oil pipeline requires a set of works that require the use of various methods and the use of the necessary technical means. The developed set of measures for organizing work in response to oil spills on the water surface and the results of the analysis of existing methods for responding to oil and oil products spills will reduce the time for containment and response to the spill, taking into account the optimal choice of technology for cleaning the coastal strip from oil pollution.


2021 ◽  
Vol 2131 (3) ◽  
pp. 032057
Author(s):  
R Akhtyamov ◽  
T S Titova ◽  
D V Glazkov ◽  
I I Gavrilin

Abstract The article provides an algorithm for organizing oil spill response on the water surface, as well as the results of the analysis of existing methods of oil and oil product spill response. In order to improve the complex of measures to eliminate oil spills on the water surface, the main requirements for oil-absorbing materials are given. It is shown that the localization and elimination of oil and oil products spills on the water surface due to the destruction of the underwater passage of the main oil pipeline requires a set of works that require the use of various methods and the use of the necessary technical means. The developed set of measures for organizing work in response to oil spills on the water surface and the results of the analysis of existing methods for responding to oil and oil products spills will reduce the time for containment and response to the spill, taking into account the optimal choice of technology for cleaning the coastal strip from oil pollution.


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