There are considered various thermal technologies (pyrolysis, gasification, combustion) used for neutralization of sewage sludge. A promising technology of sewage sludge high-temperature neutralization with recirculation of steam-gas mixture without consumption of additional fuel is presented.

There are presented the results of studies on determining the minimum amount of gas suction ensuring the efficiency of the shelter at a level exceeding 98 % at steady state operation of the electrolyzer and the amount that ensures the shelter efficiency above 90 % when replacing of the anodes. Introduction of the results obtained in industrial scale is shown to reduce power requirement of gas treatment plants by 10…15 %, lamppost emissions – by 20…25 %. Equipping of electrolyzer's work space by a shelter in the form of separation baffler would reduce lamppost emissions of hydrogen fluoride to 1.08…1.1 times, carbon dioxide – to 1.2…1.22 times, carbon monoxide – to 1.2…1.3 times.

To reduce the specific fuel consumption and improve environmental safety of heat-supply systems, it is proposed to use autonomous boiler houses equipped with fuel-efficient gas water-heater of condensation type developed in V.G. Shukhov BSTU instead of the more common today centralized heat-supply systems.

There are given recommendations on using electro-coagulation method for purification of industrial sewage including conditions of the process, design features of modern electro-coagulation units. There are considered the phenomena, which can lead to slow down the process of electrocoagulation, as well as appropriate measures to prevent these phenomena.

It is considered the possibility of using high adaptability of microalgae in the technologies of industrial production of biofuel-destination phytomass. It is shown that the various biotic factors greatly affect the productivity and chemical composition of the algae phytomass that determines the feasibility of development of technological approaches to improve the efficiency of production cycles for obtaining energy resources. Threepoint methodic for estimating the efficiency of various modulating biotic factors when controlling productivity and chemical composition of the algae phytomass is proposed.

It is shown the expediency of utilization of substandard wood i.e. tree branches, wood with twigs and wood partly without bark as facing material, which enables to reduce significantly timber waste.

There are synthesized nanostructured solid solutions of Me-Zr-Ce-O (Me = Sc, Y, La, Pr, Nd, Sm) based on the cubic fluorite lattice of ceria. By the methods of X-ray fluorescence analysis, BET and gas chromatography, there are studied structural and catalytic properties of the samples. The catalysts have high catalytic activity and thermal stability, which indicates the possibility of their use in the process of detoxification of gaseous media from carbon monoxide.

There are considered the possibilities of modifying sewage from polyphosphate fertilizers production in order to obtain technical coolant for industrial refrigeration systems. Thermometric studies of crystallization of two- and three-component systems based on calcium nitrate were carried out. There are selected and investigated organic and inorganic corrosion inhibitors in alcohol-water-salt system by electrochemical methods. The basic scheme of the process of manufacturing technological coolant from industrial sewage generated during production of mineral fertilizers is presented.

It is investigated the process of recycling distilled liquid i.e. the waste of soda ash production by the ammonia method. Distilled liquid was treated with sodium hydroxide. Calcium hydroxide, which is formed in this case, was filtered out; the filtrate, consisting mainly of sodium chloride, was subjected to treatment in a membrane electrolysis cell. Such processing of distilled liquid is shown to enable to produce calcium hydroxide, sodium hydroxide and chlorine as commodity products.

There are presented the results of investigations of some properties of technogenic anhydrite i.e. calcite anhydrite obtained when capturing sulfur-containing gas at the MMC "Norilsk Nickel" OJSC; the compositions of stowing solutions using technogenic anhydrite to fill mine voids at the same enterprise are developed as well. The results of these investigations may be of interest to professionals working at the enterprises of metallurgy, where the production of metals is accompanied by emission of sulfur-containing gases, power plants using sulfur-containing fuels and emitting sulfur dioxide with the flue gases, enterprises of mining industry, where it is possible to reduce the cost of stowing mixtures by replacing the natural anhydrite by the technogenic one.

It is synthesized a novel sorbent based on maleic anhydride with styrene modified by rubeanic acid. It is studied the static sorption capacity of the sorbent obtained. By potentiometric titration, there are determined ionization constants of ionogenic groups. Sorption isotherm of cobalt (II) ions with the synthesized sorbent is constructed; the optimal conditions of concentrating are investigated. The degree of cobalt (II) ions extraction under optimum conditions exceeds 95%. The technique of sorption photometric identification of cobalt (II) in seawater is developed.

The purpose of this work is to develop the methods for recycling oligomeric waste of polycaproamide production, which are formed in large quantities and are currently not recycled. There are allocated and identified oligomers of aminocaproic acid with molecular weight of 13,000 ... 30,000 from polycaproamide production waste. The modified oligocaproamides obtained can be used as modifiers of polymeric materials and coatings.

There are considered key parameters of experimental determination of solid household waste morphological composition, which determine its validity, accuracy and practical significance. The list of components is presented, minimally sufficient mass of one sample and the total number of samples are proved, the possibilities to optimize the field studies depending on the purpose of the study, the existing situation in waste management and technical capabilities are examined.

It is studied the elemental composition of linen products on the stages of processing flax using mass-spectrometry with ionization in inductively coupled plasma. The analysis of changes in heavy metals content in flax and linen products by stages of processing is carried out. The correspondence of flax and products of its processing to international standard EKO-TEX-100 is revealed. The proposals on increasing the number of standardized parameters i.e. heavy metals content in the environmental standard for linen products are scientifically substantiated. Recommendations for changes in technological regimes to ensure the content of heavy metals on the level of standardized requirements are offered.

There are analyzed advantages and disadvantages of the known gas-chemical technologies for processing of associated petroleum gas. The possibility and necessity of industrial implementation of gas-chemical utilization of associated petroleum gas inRussia are shown.

There are presented the results of calculations of the convection system "carbon monoxide – hydrocarbons" in the neutralizer. Application of the proposed technique of calculation of heterogeneous catalysis in the neutralizer enables to determine with sufficient accuracy CO and CH concentrations behind neutralizer when it's heating.

It is investigated the process of asymmetric dimethyl hydrazine (ADMH) sorption by upper peat under static conditions. The main factors that influence the process of sorption are revealed. The influence of duration of the contact between phases, concentration of ADMH solution, temperature, pH, ionic strength of the solution on the process of sorption is studied. ADMH is found to associate with peat on the principle of multilayer adsorption.