The procedures aimed to recycle off-test products of the dust-and-gas phase when producing copper at the industrial complex “Severonikel” of “Kolskaya GMK” JSC have been developed. Introduction of the proposed procedures into production will allow substantial reducing the environmental impact from cathode copper manufacture thanks to decrease of the gas phase dust content and exclusion of off-test products from the technological cycle. The advantages of the proposed procedures are low capital expenditures during implementation, increase in complexity of raw material usage, and fitness of the recycling procedures to the main technology of cathode copper manufacture.

The mechanism of formation of harmful components of anode gases of aluminum production is considered. For purification of anode gases the nepheline slime, which is alumina withdrawal from nepheline ore, is offered as adsorbent and the catalyst. The new design of a gas-collecting bell of the Soderbergh,s electrolyzer for collecting and thermal neutralization of anode gases with adjustable air supply is developed.

A new approach to solving the problem of complex nonwaste processing of bottom ash waste (BAW) of low-grade metallic and nonmetallic feeds has been set forth. The solution is based on deep recreative melting of various burden materials with dividing the flux into a metallic phase and a silicate part that virtually does not contain any metal oxides. It has been shown that, depending on the method of producing the flux, various materials are generated: a foamed X-ray amorphous material (foamed silicate) with a stable formulation, a fine mineral fiber or spheres depending on technological modes. It follows from this work that the obtained foamed material is a semiproduct used as a fill insulation, a raw material for manufacturing foam ceramics and optically transparent glasses in the visible and near-IR ranges, and a sorbent for collection of oil products. On the basis of the experimental data, an industrial waste processing facility has been developed.

The reasons and eco-economic consequences of galvanic sludge accumulation in environment have been considered. The economic futility of recycling of galvanic sludges has been shown. It has been established that recycling of chrome-containing wastes together with waste pickle liquors of steel-rolling mills enables to fully regenerate all components of the above wastes without sludge formation. The chemical processes for regenerative recycling of spent alkaline copper solutions of all kinds have been described. Deacidification of some acid electroplating wastes permits to extract oxides of nonferrous and heavy metals. Employment of the developed technologies in common will allow recycling all kinds of electroplating wastes and electrolytes without formation of sludges. Such a complex approach has some undisputable ecologic and economic advantages.

The process of TPP fly ash treatment for production of efficient thermal protection composite materials with improved operational characteristics has been presented. One of the methods of rational using fly ash that is formed during coal combustion at thermal power plants is its application as a filler in composite materials. The developed composites based on fly ash and polymer resins form a new class of heat insulating materials that boast higher fire resistance, low density, lower moisture absorption compared with analogues, and high strength. The materials have a broad application range as heat insulators: from small diameter pipelines to industrial facilities. The data obtained by the authors indicate the possibility for safe application of these materials as modern heat retainers for heat insulation of pipeline systems and buildings.

The large-tonnage wastes utilization technologies as mineral fillers for the composite building materials production were investigated. Based on the correlation between the materials properties and the types and composition of wastes, it was found that the mineral fillers addition in the composition improves the physicomechanical characteristics of the materials obtained. With materials obtained on the waste basis and with the use of various polymers, a studies complex was carried out to determine their characteristics. Established a regulatory indicators characteristic significant excess of these types of products.

The purpose of the study was to assess the effect of the metamorphism degree of coal dust on the properties of the produced extruded activated carbon, as well as the possibility of involving a by-product of granular activated carbon production for the purpose of its utilization. In the study, the coals of the Kuznetsk coal basin of the brands Brown Coal, Gas Coal, Weakly Caking Coal (SS(3SS) and SSOM), Lean Coal and Anthracite were analyzed. The optimal coal raw material, namely Weakly Caking Coal of the Bachatsky coal cut SS(3SS), was determined. The study of the effect of the coal grinding degree on the properties of the produced sorbent led to the conclusion that the content of the target fraction (0.1–40 μm) to 79 ± 0.5% in coal dust results in production of extruded activated carbon that meets all requirements of standard. The involvement of lean coal brand TPK – a by-product of granular activated carbons production – with weakly caking coal brand SS (3SS) with 1:1 ratio leads to a decrease of cost of obtained sorbent, as well as to improvement of some of its characteristics.

The new catalyst for isomerization process of light hydrocarbons based on novel synthesized inorganic superacids has been developed. With this purpose synthesized a number of mixed heteropolyanions with a modified Keggin structure containing different transition metals (including platinum group metals). Developed the technology of preparation of superacid catalysts with a coating of modified heteropolycomplexes on different carriers. The efficiency of the developed HPC catalyst in the process of isomerization of light hydrocarbons is evaluated.

The task of automated searching for the optimal conditions of cellulose-containing waste fermentative biodegradation process has been considered. It has been proposed to use the system of lysed zone optical recognition to determine the ferment strength, and a software and hardware complex providing simultaneous comparison of several strains has been developed. The system of selecting the most effective decomposer and biodegradation conditions has been created. The proposed system may be used for optimization of cultivating the wide array of microorganisms, especially in conditions of frequent changing initial substrate sources.

The research of chemical utilization, which is mainly aimed at chemical depolymerization or removal of matrix by carbon fiber preservation, is presented. The article reflects the research results of carbon fiber composites disposal through chemical method providing the reinforcing filler extraction of the total matrix volume, which further can be reused in the polymer composite materials production, thereby the costly resource is saved. The obtained results allow to assess the possibility of establishing a fundamental basis for the waste and polymer composite materials articles disposal technology.

The possibilities of using distributed "blockchain" networks not only in financial transactions of crypto-currencies, but in a wide range of information messages and for storing confidential information from unidentified third parties are discussed. The positive economic and social possibility of using distributed encrypted networks on the Internet is shown to preserve personal freedom of action and new opportunities for personal business. At the same time, it is shown that the world wide web of Internet networks carries new threats and risks in life activity associated with hiding the true faces of the participants in the common network and the existing, despite the encryption, the possibility of information leakage, its irrecovecability in the event of a misstatement. Particularly noted is the general problem of the dependence of the digital technology and technology used in Russia on the overwhelming borrowing of the electronic database. A warning is given to users who do not have special knowledge and means of protection, with widespread use of blockchain technology in business, financial activity, and personal information storage.

The problem of technogenic contamination by mercury of urbanized territories of the southern part of Siberia and the Far East in the regional and sectoral aspects according to sampling of poplar leaves is considered. The study was conducted according to a single methodology in 35 localities. Quantitative estimates of the distribution of mercury in the leaves of poplar in individual cities and the region as a whole were obtained. The dependence of the growth of the average mercury content in the cities on their population has been established. Revealed are significant in terms of area and length, technogenic biogeochemical aureoles, and mercury dispersion streams that are stable in time in the city of Novosibirsk, in the villages of Aktash and Shelekhov, as well as sources of mercury emissions into the environment located on their territory. Recommendations are made for further research.

The experience of disturbed soil recultivation on tantal-berill deposit of Malyshevsky are administration has been annotated in the paper. At has been estabeished that the most effective way of worked out quarries is fish industry and extraction damp waste and extracted ores enrichment – forest management. Besides recultivated quarries shoued be esed as antifire reservoirs. At has been proved experimentally the postibility to form on extraction damp of tantal-berill highly productive artificial and natural pine stands with deposit of trunk wood in 42-aged trees up to 334 m3/ha. On the base of recultivated damps it is advisable to form recreative zones for dwellers of settlements located near by.

The possible influence of Kholodninskoe deposits of polymetallic ores is considered. The Deposit is located in Severobaykalsky district of the Republic of Buryatia. It is in the Central ecological zone of lake Baikal. Reclamation work was not carried out after the exploration of the 1980s and at present pollution continues to form: the Deposit is not being developed, but from exploration tunnels continue to receive mine waters with high concentrations of zinc, iron, manganese and other elements. Background monitoring is carried out on the territory of more than 10 years, including conducted a comprehensive expedition to assess the impact of Kholodninskoe deposits on the waters of the Gulf of Angarsky Sor and lake Baikal. The article contains a preliminary assessment of the current impact of the field based on the analysis of surface water samples and sediments