A method for removing nitrogen oxides from industrial of exhaust gases by catalytic reduction using fibreglass carriers was studied. It was noted that this know-how reduces nitrogen oxides and oxidizes carbon monoxide and hydrocarbons to safe compounds at moderate temperatures without additional reagents (ammonia, urea). It was proven that catalytic blocks structured with corrugated flat metal meshes provide the highest catalyst activity, and the best carrier is macosatin fabric. It was concluded that the described catalysts are characterized by high internal mass exchange rate in combination with low hydraulic resistance, high permeability, and the possibility of being used in dusty flows, which makes them very promising for treating various flue and exhaust gases.

The original thermal method for treating aqueous solutions of toxic compounds and a corresponding installation consisting of a furnace and a three-section nozzle was proposed. The technology of neutralization of toxicants using a two-stage exposure to high temperatures was presented. It was concluded that it is possible to recycle many toxic substances soluble in water using this method and the developed design.

New ways justified to improve technological nature-convergent principles and schemes for the rational use of resources in water treatment and processing. Main principles for the rational use of resources, nature-convergency and ressources substitution were developped. The impact of ultrasound on the production of highly reactive sodium hypochlorite was revealed. The know-how of an active chlorine-containing reagent from underground mineral waters was studied and its effectiveness in disinfecting natural and waste waters of pulp and paper and fish processing industries was proven. A new formula for fertile soil production based on tap water sediment was developed.

Biodegradable composites based on a solution of polyvinyl alcohol (PVA) and by-products of plant origin were created. The concentration impact of vegetable fillers on the elastic-strength, moisture-absorbing and biodegradable properties of composites based on PVA solution were studied. The biodegradability of the resulting films was evaluated by instillation and exposure in the ground for 30 weeks. It was concluded that all the developed compositions can be used in the packaging industry.

Biological sequestration was studied as a compensatory measure to reduce greenhouse gas emissions. The article offers carboxylic farms set up on the example of the developed model in temperate climate. Its technological parameters were substantiated: plant species – Scotch pine (Pinus sylvestris), planting density – 8200 pieces/ha, life cycle – 40 years. At the end of the life cycle of a carboxylic farm, it is recommended to use the resulting wood in the pulp and paper industry, as well as the pyrolysis of mill culls with the release of carbonizates as a by-product fuel, sorbents for water purification and a composting structurer. The assessment of greenhouse gas emissions at all stages of the life cycle of a carbon farm showed that a significant part of the emissions occurs in the post-operational period and amounts to about 14 % of greenhouse gas uptake in CO₂ equivalent.

The forecasting and pollution remediation principles of decommissioned sludge reservoirs were proposed. Forecasting aspects based on the model of mass transfer of pollutants in the subsurface from the standpoint of the laws of filtration theory were studied. The results of an industrial trial on contaminated subsurface flush on one of the storage tanks for extremely hazardous waste in the Samara region were presented.

The use of mining and metallurgical industry wastes containing calcium, magnesium, and strontium carbonates is described. The initial compositions and transformations occurring during the firing are considered. The best composition was chosen according to the results of laboratory studies, and based on that, ceramic brick was studied in real production conditions. The possibility of using mining and metallurgical industry wastes (dolomite and cake) as coloring pigments in the production of ceramic bricks has been theoretically substantiated and experimentally proven. Magnesium and strontium carbonates, along with calcium carbonates, participate in the formation of multicomponent systems, on the basis of which it is possible to obtain wall ceramics that meet modern requirements.

Analysis of the studies results of the resource portfolio and the main characteristics of by-products with the possibility of their use as inert aggregates of cement-free hardening mixtures, which, together with the development and improvement of the coal mining process scheme, allows addressing environmental issues. It was revealed that, during the reclamation of open-cut mining, retainers can be made by a cement-free layer of hardening backfill from preconditionned technogenic products, which, after hardening, becomes a fixative and prevents soil subsidence.

The distribution of a wide range of chemical elements (Al, B, Ba, Ca, Cd, Ce, Co, Cr, Cu, Dy, Er, Eu, Fe, Gd, Ho, K, La, Li, Lu, Mg, Mn, Na, Nd, Ni, P, Pb, Pr, Sc, Sm, Sr, Tb, Tm, Y, Yb, Zn) at different distances from the Caspian highway in the Tula region was analyzed. Al, Ba, Ca, Fe, K, Mg, Na, P, Pb, Zn were identified as the main pollutants. It was revealed that the main contaminated area on the windward side of the road extends up to 20–40 m, and on the leeward side – up to 10 m. It was stated that the content of main heavy metals in all samples from both sides were not hazardous to public health.

The analysis of heavy metals and arsenic contamination of soils of the urbanized territory of Svirsk (Irkutsk region) is presented. The features of distribution and concentration of mobile forms of elements – toxicants in soils of different functional zones of the city are revealed. It has been established that the main pollutants of the soils of Svirsk are As, Zn, Pb, Cr, Fe and Cd, which have high accumulation rates. Mainly high–contrast polyelement geochemical anomalies Fe–Pb–As–Zn– Cd–Mn and Cu with extremely dangerous pollution levels are formed in the soil cover of industrial zones. The soils of a private residential area are characterized by local contrasting four–element anomalies Zn–As–Cr–Mn with a dangerous and extremely dangerous degree of pollution, multi–storey residential sector – two-element low-contrast anomalies Cr–Cu with a dangerous and moderately dangerous ecological situation.

The results of long-term (during the 8-year period) observations of aerosol optical depth in the center of St. Petersburg are presented, which are performed using the stationary lidar complex of the Resource Center "Observatory of environmental safety", Research Park, St. Petersburg University. It has been established that the content of aerosol particles over the city prevails in the summer and spring seasons, while the minimum content of aerosols is observed in winter.

The actual aspects of environmental financing are considered. A comprehensive assessment of the state of environmental protection activities in the CIS countries based on the results of recent years is presented and an analysis of its financing for various types of natural resources is carried out, as well as changes in relevant environmental indicators are studied. It has been revealed that despite the growing volumes of investments aimed at environmental protection, the environmental indicators of the Commonwealth countries do not always show corresponding positive trends.