scholarly journals Theoretical Bases of Electrochemical Cleaning of Oil-contaminated Soil

2020 ◽  
Author(s):  
Meshalkin Valeriy Pavlovich ◽  
Shulaev Nikolay Sergeevich ◽  
Pryanichnikova Valeria Valeryevna ◽  
Bykovsky Nikolay Alekseevich ◽  
Kadyrov Ramil Rimovich
Keyword(s):  
Contaminated Soils ◽  
Electrochemical Process ◽  
Oil Products ◽  
Energy Costs ◽  
Cleaning Process ◽  
Reservoir Water ◽  
Optimal Amount ◽  
Effective Removal ◽  
Small Voltage ◽  
Electrochemical Cleaning

This study developstheoretical bases for the electrochemical process of cleaning soils from oil, oil products and highly mineralized reservoir water. The article experimentally and theoretically reveals patterns of reducing the content of polluting oil products in soils of various types during the small voltage passing. The optimal amount of electricity for the effective removal of various types of pollution was required. For the implementation of a electrochemical soil cleaning process a scheme of an original installation with placement of electrodes in the soil was studied. It reduces the resistance between the electrodes. The technical and economical calculations to determine energy costs of the electrochemical installation for cleaning oil-contaminated soils included: the number of electrodes; the voltage depending on the properties of the soil; the area; the depth of contamination of the soil to be treated;azndthe parameters of the electrodes. This allowed us to determine and develop the required degree of cleaning. Keywords: electrochemical process, charge, soil, oil products, voltage, cleaning

scholarly journals Economic efficiency of investments in producing a mixture from brewing waste for the recultivation of soil contaminated with oil and oil products

2020 ◽  
Vol 17 ◽  
pp. 00179
Author(s):  
Elena Yu. Rudenko ◽  
Galina S. Mukovnina ◽  
Artem G. Kashaev ◽  
Olga E. Temnikova ◽  
Roman S. Mukovnin
Keyword(s):  
Economic Efficiency ◽  
Contaminated Soils ◽  
Oil Products ◽  
Financial Plan ◽  
Negative Balance ◽  
Oil And Oil Products

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.

scholarly journals Monocathode installation for electrochemical cleaning of oil-contaminated soils

2021 ◽  
Vol 848 (1) ◽  
pp. 012142
Author(s):  
V P Meshalkin ◽  
N S Shulaev ◽  
R R Kadyrov ◽  
V V Pryanichnikova
Keyword(s):  
Contaminated Soils ◽  
Electrochemical Cleaning

Ultrasonic technologies for extracting oil products from oil-bearing sands and contaminated soils

2009 ◽  
Vol 43 (4) ◽  
pp. 504-510 ◽  
Author(s):  
O. V. Abramov ◽  
V. O. Abramov ◽  
S. K. Myasnikov ◽  
M. S. Mullakaev
Keyword(s):  
Contaminated Soils ◽  
Oil Products

A Novel Post-CMP Electrochemical Cleaning Process Using the BDD Film Anode Combined with Special Chemical Agents

2019 ◽  
Vol 27 (1) ◽  
pp. 631-638 ◽  
Author(s):  
Baohong Gao ◽  
Yadong Zhu ◽  
Yuling Liu ◽  
Shengli Wang ◽  
Qiang Zhou ◽  
...  
Keyword(s):  
Cleaning Process ◽  
Chemical Agents ◽  
Electrochemical Cleaning

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 ◽  
...  
Keyword(s):  
Contaminated Soils ◽  
Oil Pollution ◽  
Biomass Accumulation ◽  
Field Testing ◽  
Sole Source ◽  
Oil Products ◽  
Natural Ecosystems ◽  
Sorption Ability ◽  
Immobilized Microorganisms ◽  
Oil And Oil Products

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.

scholarly journals IN VITRO STUDIES OF ELECTROCHEMICAL PURIFICATION OF FOUNDATION SOIL FROM OIL PRODUCTS

2019 ◽  
Vol 21 (4) ◽  
pp. 168-180
Author(s):  
E. A. Shabanov ◽  
S. M. Prostov ◽  
O. V. Gerasimov
Keyword(s):  
Electric Current ◽  
Contaminated Soils ◽  
Electrical Resistance ◽  
Physical And Mechanical Properties ◽  
Polluted Soil ◽  
Oil Products ◽  
Soil Decontamination ◽  
Foundation Soil ◽  
Laboratory Setup

Purpose: The aim of this work is the operational electrophysical method of the control for contamination and purification of soil from oil products and the identification of changes in the soil properties in electrochemical processing to determine rational modes of processing.Methods: Investigations are performed on the laboratory setup including the two -electrode scheme of electric treatment of the artificially polluted soil .The setup is equipped with a system of micro sensors of specific electrical resistance. Traditional laboratory tests are used to determine the physical and mechanical properties of soils. The possibility of control for soil purification by electrochemical method using a system of continuous operational geophysical monitoring is considered.Results: Changes in the physical properties of contaminated soils are experimentally confirmed when exposed to the electric current. A physical model is created for coagulation of oil products in pores during the electrical processing. It increases the amount of sand and clay components with changes in the electrical resistance of soil. The physical processes in the clean and polluted soil are compared. It is shown that when electric current passes through contaminated soils, oil products in pores transfer to a solid, less toxic state, which leads to a change in the specific electrical soil resistance throughout the zone processed. This pattern should be used to control soil decontamination.

The Model of Environmental Rationing of Oil-Contaminated Soils by Changing Some Biogeocenotical Functions

2018 ◽  
Vol 22 (11) ◽  
pp. 34-39 ◽  
Author(s):  
E.I. Kovaleva ◽  
A.S. Yakovlev
Keyword(s):  
Contaminated Soils ◽  
Biological Indicators ◽  
Petroleum Products ◽  
Oil Products ◽  
Dose Effect ◽  
Residual Content ◽  
Effect Model ◽  
High Moor ◽  
Oil Concentration ◽  
Standard Value

The model of ecological rationing of oil-polluted soils is substantiated according to the function of providing the soil with conditions for biological activity according to separate biological indicators sensitive to oil products, in particular, catalase activity and survival of pot worms. Petroleum products were rationed in different types of soils of the Sakhalin region: high-moor peat bog; humus podzolic surface-glue; alluvial meadow acidic; brown forest acid podzolic in model series with different levels of pollution. The establishment of a standard value at which the functioning of the studied soils changes, was carried out according to the criterion of changing the values of selected biological parameters corresponding to the change in the rate of soil functioning with increasing oil concentration according to the dose-effect model. For the standard of soil quality for petroleum products in the regions of oil production, the value of petroleum products was used, leading to a significant deviation of the values of biological indicators from background values determined by the same biological indicators. For the permissible residual content of oil products in soils, in which the soil maintains stable functioning, performs environmental functions, a 30% change in the functioning of the soil from the background analogue according to the studied biological indicators was taken. Calculations on the rationing of oil content in soils can be performed using the non-linear regression model described by the logistic curve.

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