The proposed technological process of manufacturing propylene oxide, calculated on the production capacity of 50 thousand ton per year to create the raw materials base for synthesis of polyols, polyurethanes, polyether resins. On the basis of the research trial of the process by liquid-phase epoxidation of propylene the optimal parameters of the process are determined. The conversion of hydrogen peroxide is more than 99 %, the yield of the propylene oxide is 94 %. The process includes three main stages: (1) raw materials preparation, (2) liquid-phase epoxidation of propylene, (3) distillation of the target product. The scheme provided for recirculation of unreacted propylene and the solvent – methanol.

A technological scheme for separating carbon dioxide from a gas mixture is presented. The estimation of the work of the column during the absorption of carbon dioxide from a mixture of methane (simulation of biogas treatment) is given. Based on the calculation performed, a graph of the column height versus the diameter of the bubbles is constructed. It is shown that bubbles obtained on ceramic membranes have a high specific surface, which in turn allows to significantly reduce the dimensions of the apparatus, while maintaining a high degree of biogas cleaning from carbon dioxide.

The synthesis of prooxidant, in particular, iron carboxylate, is considered on the basis of secondary raw materials - sapstock, formed during the production of vegetable oil. Oxy-biodegradable polyethylene films based on polyethylene modified with iron carbacylate, iron stearate and d2w import additive have been studied. The aging of samples by the accelerated method under the influence of UV radiation was studied using the methods of IR spectrometry and ecotoxicity; as well as an "electronic nose" with the use of a gas analyzer based on a variety of piezoelectrics.

Effective technological solutions for in-depth comprehensive deactivation of high-salt liquid radioactive waste, containing organic complexing agents (ethanedioic, vinegar, citric and other acids), from 134,137Cs, 90Sr, 60Co radionuclides and rare-earth elements, based on ion-exchange techniques, have been developed. Extracting of radionuclides unbound with organic ligands from solutions is effective with ion-exchange materials based on oxotitanium(IV) hydrophosphates possessing high sorption characteristics and providing a reliable radionuclide immobilization. Radionuclides, forming strong complex organic compounds, are extracted using the ion-exchange techniques from the complex which is followed by sorption and co-precipitation.

The list of potential processes in the non-ferrous metallurgy which are mature enough to be implemented during sorption processes. The basis for that is the industrial production of selective sorbents and development of process charts for those resins local applications. In particular, it highlights the high efficiency, including environmental, of purification process of nickel anolytes from cobalt with an application of new class of impregnated resins instead of settlement filtration for cobalt extraction. For the first time in the rare earth metal sector, nano patterned and chelated sorbents were used for rare earth metals separation and fine purifications of solutions from non-rare earth metals, which ensured the high purity individual rare earth metals. It is also for the first time, and for industrial implementation of combined floatation they developed and prepared the hydrometallurgical technology of crude concentrates from low-grade copper-sulphide ores, based on application of new ionites, with production of quality commercial products with by-product recovery of precious components and wastes recovery during complete environmentally balanced cycle. The environmentally sound technologies were developed for tungsten and molybdenum recovery with an application of low network structure and medium expansion resins for tungsten and molybdenum plants instead of extraction and settlement methods of crude materials. Based on selective ionites and high-speed hardware development the new processes were proposed for extraction of rhenium, indium, osmium, selenium, tellurium, germanium and other trace elements.

For the first time different taxonomic groups of microorganisms are inoculated on culture medium containing white phosphorus as the single source of phosphorus. On these media microorganisms grew and have not experienced phosphorus starvation. It is the world's first example of the inclusion of white phosphorus in the biosphere cycle of elemental phosphorus. The highest concentration corresponds to 5000 times excess of MPC of white phosphorus in wastewater! Devoted to the search for the white phosphorus metabolites, and the probable way of the phosphorus metabolism. The increase of cultures resistance resulting from directed selection is demonstrated for the first time. the comparison of the sequences of ribosomal genes of the fungus, steadily metabolizing the white phosphorus, with sequences of the GenBank database, allowed us to identify this microorganism as a new strain of Aspergillus niger, to which we have assigned the number A. niger AM1. Inoculation of A. niger AM1 in medium containing just two sources of phosphorus (phosphate and white phosphorus) demonstrated that P4 does not exhibit toxic properties in relation to this microorganism. the slow growth of Aspergillus in the medium with white phosphorus is not due to the toxicity of the last one for the strain, but only due its inaccessibility as a phosphorus source.

The article presents the results of experimental studies on the effectiveness of wastewater treatment from oil product impurities by pneumoseparation in the presence of a humic preparation. The study was carried out under the conditions of a model experiment in which test emulsions were used based on water and various petroleum products – typical and most common pollutants of waste water: "diesel fuel-water"; "gasoline-water"; "engine oil-water"; "mazut-water". It is established that the application of the pneumoseparation method allows to significantly reduce the concentrationof petroleum products in processed emulsions. However, the severity of this process is not the same for different petroleum products. The implementation of pneumatic separation in the presence of a humic preparation significantly improves the efficiency of removal of petroleum products. It was noted that pneumoseparation, both in itself and in the presence of humic preparation, helps to lower the pH of test emulsions.

The adsorption of chlorphenol and phenol from aqueous solutions of individual components and their mixtures on active coals (AC) differing in nature, structure, specific surface has been studied. The main regularities, features and mechanism of adsorption of organic components on AU have been established. The mechanism of mass transfer during adsorption of a mixture of chlorophenol and phenol on AU of different grades is shown. A method for optimizing the parameters and modes of the continuous adsorption purification process is proposed. The coincidence of the experimental and theoretically calculated output curves confirms the validity of the proposed approach to the modeling of adsorption dynamics and makes it possible to determine the dynamic characteristics of adsorption without carrying out additional experimental studies. Based on the results of experimental studies and derivatographic analysis, a technology for the regeneration of active carbons was developed after adsorption of a mixture of phenol and chlorophenol by heating with an air stream at a temperature of 250 °C for 2 hours. On the basis of a complex study of the adsorption of organic substances, optimization of the purification regime and parameters of the adsorption column using mathematical modeling, an adsorption technology for wastewater treatment providing resource saving and environmental protection has been developed.

The possibility of using the technogenic waste of thermal power plants as a solid phase reagent for effective purification of aqueous solutions from aluminum ions under stationary conditions is shown. Al3+ model solutions with concentration from 100 to 1000 mg·l-1 are used to determine the features of the heterophase process and study the effect of the amount of reagent used, the contact time, temperature and concentration of the initial solutions on the degree of purification of solutions from Al3+. It is found that when choosing the conditions, the proposed reagent allows the aluminum ions to be converted to a solid phase to obtain solutions containing aluminum below the maximum permissible concentrations. Reagent consumption decreases with increasing process time, increasing temperature and decreasing the concentration of the solution to be cleaned. A method for wastewater treatment using a new reagent from aluminum ions to the MPC level was developed and successfully applied at the metal working enterprise. The precipitate obtained in the purification can be of interest as an aluminum concentrate. The economic and environmental benefits of using a new reagent for purification are compared with the use of traditional sorbents. The proposed purification method provides a comprehensive solution of important environmental problems: purification of water from cation-pollutants with simultaneous utilization of anthropogenic waste from thermal power plants.

It was stated that the investigated selenium-containing heterocyclic compounds possess fungicidal activity. The values of the minimum inhibitory concentrations of these compounds for the most active micromycete-destructors of industrial and building materials were determined. The dependence of biocidal activity on the structure of the test compounds was revealed. It is shown that these compounds impart to the non-inflexible paint and varnish materials the properties of mushroom resistance and fungicidal properties, which makes it possible to use them as biocidal additives to protect paint and varnish materials from bio damage caused by microscopic fungi. A study was made of the ecological and toxicological characteristics of these compounds, using as a test organism the cultures of zeodiodaphynia and algae. Threshold concentrations of these compounds have been established.

The possibility and expediency of the accelerated introduction of the "figure" in the vital activity of Russians in the conditions of legal, social and technical unpreparedness is considered. Examples of increasing environmental risks in a broad sense of the term "environmental security" are given, when the possibilities of the "digital economy" are determined by the level and state of production technology, the globalization of knowledge, products of labor, forms of information communications, without knowing the boundaries of state restrictions. Taking into account the realities of the Russian economy, its readiness to catch up with the lag in the quality of life of the population that emerged in the last 30 years from the inhabitants of Western Europe and the USA, it is suggested to carry out a thorough and transparent for potential participants qualified and "transparent" i.e. a comprehensive comparative analysis of the expected effectiveness with increasing opportunities for environmental and social risks that reduce the safety and quality of life of a large part of the country's population.

The Ural river is one of the major rivers of Europe. The quality of surface waters of the Ural river basin was estimated within the city of Orenburg in three sections on a number of indicators: pH value, suspended solids, BOD5, petroleum, copper, total iron, sulfate ions, nitrite nitrogen, ammonium nitrogen, calcium, magnesium. To assess the level of contamination of water used a comprehensive performance – specific combinatorial index of water pollution, the ratio of the complexity of water pollution, class of water quality. It is shown that the water in the studied sections is characterized as "polluted" and "dirty". Microbiological analysis for E. coli showed the absence of this type of pollution.