Investigated spent microcellulose (MC) of the stage of winterization of the production of refined vegetable oils (spent adsorbent). The stability of the MC composition was evaluated under various storage conditions (with and without access to oxygen, at temperatures of 20 and 4°C). A technological scheme for the disposal of MC as a plasticizer additive for polymer compositions is proposed. It was found that the melt viscosity index of the composition “polyethylene: microcellulose” (70:30% by weight) decreases by 14% with the introduction of an MC-based plasticizer and stretch polyethylene (50: 50% by weight) in an amount of 20% by weight.

The features of the genesis of technogenic lens elements of hydrocarbons under the sites of oil refineries are considered. Recommendations are given for the study and assessment of the dynamics of the state and migration of accumulated hydrocarbons in the geological environment using numerical and 3D modeling. The differences of technogenic lens elements from oil fields of natural origin are presented. It is shown that the object under study adversely affects all components of the geological environment. To reduce the anthropogenic load exerted by the oil lens elements, a physicochemical method has been proposed for cleaning contaminated rocks from pollutants using surfactants. This technology allows for the rehabilitation of the geological environment and at the same time to intensify the extraction of commercial hydrocarbons accumulated under the territories of oil refineries.

The issue of migration and accumulation of harmful and toxic compounds in soils is considered. Particular attention is paid to the study of the rate of ion-exchange process of cations of copper, iron, zinc, aluminum on humic acids, since these elements constitute a significant mass of harmful emissions from industrial enterprises in the form of drainage effluents to be cleaned. The results of studies of mass transfer processes in soils for various compounds are presented. An approach is proposed based on the calculation of the average dynamic value of the charge of a polyvalent metal cation extinguished when interacting with a specific sorbent, which allows a predictive estimate of the migration and accumulation of this cation within the spill of its salt solution on the soil.

The results of experimental research thermal and environmental performance of the boiler "Firematic 60" burning pellets, bark, pressed wood sanding dust, granulated peat and sod peat and black pellets of hydrolytic lignin are presented. The research identified the heat balance components of the boiler and gaseous emissions during burning solid fuels. The emissions of solid particles and the content of soot particles are studied. Energy survey found boiler provides high thermal and environmental performance during burning biofuels and granulated peat that should be used for buildings heating; especially in the conditions of North-Arctic region. The organization of production of black pellets of hydrolytic lignin allowed to obtain high-quality fuel from biomass wasted 40–60 years ago.

The technology on separation of the solid wastes at the municipal waste landfills obtaining solid waste and soil, which is sanitized with the use of natural sorbent "Agroionit" is suggested. It showed that sorbent "Agrionite" application in the amount of 16 % in absolutely dry matter could reduce the content of mobile forms of heavy metals up to MPC. To reduce the amount of sorbent up to 12 % pre-treatment of soil with lime in the amount of 0,4 % for the detoxification of zinc, which is slowly absorbed by Agrionite is required. Appropriate changes to the developed technology have been added, including the regulation of temperature and humidity of soil.

Utilization of optical fiber involves two problems: the use of a protective shell (mainly various types of plastics) and the actual optical fibersquartz filaments with an admixture of germanium dioxide coated with a protective layer of polyethylene. The aim of the work was to study the physical and chemical properties of samples of optical fiber wastes. The behavior of the components of this material has been studied by thermography: a quartz germanium-containing glass and a polyethylene sheath during heat treatment. It has been established that in the temperature range from 20 to 700 °С in the atmosphere of the air quartz fiber does not undergo changes, and the polyethylene shell of the optical fiber passes through the stages of sorption of water vapor and air oxygen at 125 and 200 °С during melting, and above 300 °С – destruction with a mass loss of up to 55 % and the release into the gas of products of oxidative degradation.

A method for modeling and assessing the degree of air pollution in Technogenically disturbed areas based on fractal analysis is proposed.

Presently in urban territories there is a number of ecological problems caused by negative impact of chemical and physical factors. Negative impact of chemical factors is mainly caused by gas emissions. CO₂ emissions are typically very significant in modern towns. A set of chemical equations to determine emission and absorption of CO₂ inside the municipality boundaries is developed. Based on these equations, authors have developed an accounting methodology for CO2 emissions and absorptions that is applicable to the municipal territory. It is expected this methodology to become a tool for planners and designers as well to be used in territorial emissions trading. The measures of noise reduction among of town planning solutions are described. In total, effective noise reduction in living areas may be achieved by provision of complex administrative-organizing, urban development and building-acoustic measures.

The 13-year-old (from 2003 to 2016) dynamics of soil contamination for the content of heavy metals in the area of the village of Bolshoye Dumchino of the Mtsensk District in the territory adjacent to the slag dump of Mtsensk Foundry was studied. It is shown that on the territory of the placement of slag residuals a techno geochemical anomaly is formed, in which the contained heavy metals are of technogenic and genetic (natural geochemical) nature. To identify the effect of anthropogenic factor on soil pollution with heavy metals, was determined the refined enrichment factor of heavy metals (EFHM) in light gray forest soils at different distances from the slag dump, allowing to calculate the proportion of technogeneity of metals as a percentage of its total content. The technogenic origin of heavy metals as pollutants and the role of humus soil horizons in fixing these metals in the soil profile have been proven. Analysis of the results characterizing the degree of enrichment of the genetic horizons of light gray forest soils with heavy metals for the period 2003–2016 convincingly proves the effect of maximum accumulation of slag residuals in the dump on the accumulation intensity and fixation of the studied metals, both in the upper humus layer and their distribution in the profile soil. The established patterns in changing the degree of enrichment and technogenicity of heavy metals in the profile of light-gray forest soil are caused not only by the impact of the slag dump as a source of pollution, but also by the peculiarities of using the soils of the studied territories. It is shown that the toxic load for the analyzed period not only did not decrease, but even increased.

The results of studies of the formation of natural communities of higher plants on the ash dump. Identified and analyzed the possibility of restoring the ecological value of disturbed ecosystems are presented. Offered the option of using its own regenerative capabilities in a phased carrying out technical reclamation.

The concept of a layered system of protection of natural-anthropogenic complexes based on modern concepts of the distribution and properties of man-made streams in geological layers is presented. A classification of passive and active environmental barriers is presented, as well as technological directions, main methods and features of their introduction into the general algorithm for the development and application of a layered protection system, taking into account possible target use cases and operating conditions considered. The principles of the formation of a layered protection system, the sequence and content of the main stages of its development and implementation for use as a preventive measure to protect the environment from the predicted negative impacts are considered. Examples of various designs of barriers of both individual and component parts of the system of layered protection are presented, the main directions of their application and features of implementation are described.

It is shown that the improvement of the environmental situation at the sites of mountain sites is achieved through the implementation of planning activities that include: the organization of storm sewers to collect surface and filtered through the dumps of water, supply them to the mine waters treatment plant; isolation of the surface of the dumps by the soil and vegetation layer, which prevents dust emission and migration of radionuclides from the effects of precipitation; recultivation of contaminated radionuclides in the process of production activities of local areas with a total area of 20 thousand m2. Rehabilitation measures to minimize negative effects on the environment and human health from the effects of radiation and other polluting factors have been scientifically substantiated, developed and implemented.

A detailed analysis of the existing methods of cleaning and preparation of produced waters of oil and gas fields has been carried out and the most high-tech methods have been considered in detail. The prospects for the use of produced water as a technological reserve for increasing the efficiency of oil and gas field development are shown. It is noted that the methods of physico-chemical and mathematical modeling can be effectively used to improve the electromembrane technologies. At the same time, many theoretical questions require further, deeper study.