The thermodynamics of the process of calcium sulfate decomposition is considered. An adsorbent for cleaning flue gases from sulfur dioxide in the form of sludge from alumina production is proposed. Conducted semi-industrial experiments on cleaning the flue gases of small thermal power plants and boiler houses from sulfur dioxide using a laboratory installation. Established high (more than 90%) the effectiveness of the proposed adsorbent. The unique possibility of flue gas cleaning from nitrogen oxides of thermal devices using lignite fuel is revealed. A scheme of sequential flue gas cleaning in a suspended and fixed bed of the adsorbent is proposed.

The technological scheme for the purification of biogas from carbon dioxide is considered. A mathematical model obtained on the basis of the principle of minimum intensity of energy dissipation is presented, and a graph of the dependence of the ratio of the speeds of the constrained and combined motion of particles on the fraction of the liquid phase is presented. An assessment of the operation of the column in the absorption of carbon dioxide from biogas is given.

The paper is devoted to the production of ceramic materials based on waste of non-ferrous and ferrous metallurgy without the use of natural traditional materials. The dependence between the amount of "tails" content of enrichment of polymetallic ores, chromite ore dressing wastes and the physical and mechanical properties of ceramic materials based on the clayey part of the "tails" of gravity of zircon-ilmenite ores was investigated. The dependence model is constructed on the basis of the results of the actual experiment and analytically describes the dependence of the experimental results. The regression analysis allows to obtain mathematical models that make it possible to predict the properties of ceramic masses at points not included in the series of experiments. Ceramic bricks with high physical and mechanical properties were obtained on the basis of waste from non-ferrous and ferrous metallurgy without the use of natural traditional materials.

This paper is devoted to the selection and justification the development directions of technology for the effective use of wood waste by their thermochemical conversion as part of gas-generating power plants with improved environmental characteristics. A comparison was made of the electric energy cost obtained by the use of various types of fuel (gas, diesel fuel, coal, wood chips and wood pellets). An economic comparison of single- and multi-stage gasification of woody biomass has been performed. It is shown that a more promising technology for processing biomass is three-stage gasification due to higher process efficiency. The features of the experimental gas-generating unit under development with three-stage gasification of woody biomass, which allows producing a generator gas with a minimum amount of tar, are considered.

The sorption properties of the residual biomass of microalgae Chlorella sorokiniana, which is formed after the extraction of lipids, were investigated. Residual biomass is waste and is used for wastewater treatment from iron(III) ions. Microstructural studies of Chlorella sorokiniana microalgae and residual biomass after lipid extraction were carried out. The purification of model wastewater from iron(III) ions under static conditions has been studied, the purification efficiency and adsorption capacity of the residual biomass of Chlorella sorokiniana have been calculated. A model filter was created, where residual biomass of Chlorella sorokiniana was used as a filtering load and sorption processes were studied under dynamic conditions. The efficiency of purification of model wastewater from iron(III) ions has been calculated and a comparative analysis of the effectiveness of purification under static and dynamic conditions has been carried out. A method for the disposal of spent sorbents as an additional fuel is proposed. The specific heat of combustion (q = 20,674 kJ/kg) of the spent sorbents from the residual biomass of microalgae Chlorella sorokiniana, the value of which is not inferior to traditional energy sources, was determined experimentally.

For the time being acoustical impact to the living territory is significantly increased. Imported methods of urban noise reduction are acoustical monitoring and noise mapping of urban territories. Important measures allowing to reduce negative noise impact are acoustical monitoring and noise mapping of urban territories. Peculiarities and negative features of existing methods of monitoring of acoustical pollutions are considered. Methods of monitoring with using of automated system are suggested allowing to carry out continuous measurements of noise and of the other parameters of environment. New approach to noise mapping is suggested. Methods and approaches to monitoring of acoustical pollutions are approbated in conditions of urban territory of Samara region of Russia. By using of the results of noise measurements and developed program provision noise maps of urban territory of Samara region have been developed.

Results of ecological monitoring of waste waters generated during industrial activity of enterprises of North Industrial Unit of Togliatti city and of storm waste waters of territory o Central district of Togliatti city in mixed flow of sewage ("dig"). Results of biological testing are allowing to conclude that degree of toxicity of investigated samples of waste waters is inconstant and is varying from not having toxicity to toxic. With the purpose of improvement of ecological situation in area of wastewater discharge to Volga river and of provision of corresponding quality of storm waste waters "KuibyshevAzot" Public Joint Stock Company is carrying out the implementation of the project of construction and commissioning of sewage treatment facilities of mixed flow of waste waters of enterprises of North Industrial Unit of Togliatti city.

Results of ecological monitoring of air pollution in conditions of big industrial town on the example of Togliatti town are submitted. On the basis of measurements and calculations results of comparative analysis of negative impact of industrial air pollutions and exhaust gases of automobile transport to the state of atmosphere of Togliatti town was carried out. In total results of researches are allowing to conclude that the main source of air pollution is automobile transport.

The analysis of the Method developed by the Ministry of Natural Resources and Ecology of the Russian Federation for calculating the amount of damage to the environment caused by air pollution. In accordance with the calculation tools proposed in the method, the damage caused to the environment by excessive emissions of stationary sources of atmospheric air pollution, as well as from agricultural fires and from combustion at waste disposal sites, including landfills, temporary waste accumulation sites and unauthorized landfills, has been estimated. It is shown that, on the one hand, the adoption of a methods for assessing air pollution damage is strategically important, since there is currently a significant gap in this field of methodic support for harm assessment. On the other hand, the required Methods needs to be corrected.

To date, many years of experience have been accumulated in the field of reclamation of rock heaps of coal mines in Central Siberia. It has been established that the technologies used for filling dumps do not contribute to the environmentally acceptable development of trees planted on waste dumps during forest reclamation. The developed technologies of layered filling dumps provide a reduction in the cost of land reclamation, as well as high rates of forest reclamation.

It is shown that the chemical composition of the litter falls and wood of deciduous and coniferous trees is different. On the background of aerotechnogenic pollution, accumulation of individual heavy metals, an increase in ash content was noted. There was revealed the anthropogenic dynamics of the accumulation of heavy metals in the wood of trees: the maximum number during the period of diesel traction; as the railway site is electrified, the accumulation of elements decreases. The obtained data can be recommended to be used for phytoremediation at sites subject to pollution. The obtained data will be the basis for assessing the phytoextractive potential of woody plants, in diagnosing aero-technogenic pollution of the environment, solving the problem of reducing environmental risks, as well as during the modernization and planning of environmental measures in the field of railway infrastructure.

A study was conducted on the content of chemical elements in the epiphytic moss of Pylaisia polyantha (Hedw.) V.S.G. The moss samples were taken from 6 background areas of the West Siberian region, as well as in the city of Tomsk. The content of chemical elements is determined using neutron activation analysis. The hypothesis about the normal/log-normal distribution of the concentrations of chemical elements was tested using the χ2 criterion; asymmetry and kurtosis were used for samples less than 20. When the hypothesis is confirmed, the background concentrations of chemical elements are defined as mean values ±2σ. The concentrations of each background area are subject to the normal distribution law. For the overwhelming number of elements, the anthropogenic background of the city of Tomsk is 2 times or more natural.