This paper presents an analysis of the use of organic solvents in paint systems used in high quality treatment of car bodies in the period from 1998 to 2020. Nowadays it is possible to solve the problem of high efficiency corrosion protection and decorative and water-repellent properties of the protective layer with the help of painting systems. Paint systems include primers, putties, varnishes, paints, polishes, etc., usually from a single manufacturer.

The paper gives a general description of the areas of application of bentonite clays. A number of deposits were evaluated in terms of their use in various technological processes. Analysis of directions of application of bentonite clays in foundry was carried out.Using the methods of X-ray and gas chromatographic analysis, scanning electron microscopy, thermogravimetry and direct adsorption-structural measurements, it is shown that materials obtained from montmorillonite and heteronuclear hydroxo complexes Cr-Cu have greater thermal stability and better sorption characteristics compared to montmorillonite fixed by mononuclear hydroxo complexesUsing montmorillonite modified with heteronuclear hydroxo complexes Cr-Cu with the best adsorption-structural parameters and zeolite NCVM, a laboratory batch of mixed adsorbent catalysts has been developed.This material has been studied in deep vapor oxidation processes of low concentrated organic substances such as acetone, toluene, ethyl acetate, ethanol, butanol and butyl acetate.The conversion rate on the mixed adsorbent catalysts for the studied adsorbates was found to be 94.9–97.7 (average 96.2 %).

Radiation safety is an integral part of environmental safety and includes a set of measures to protect people and the environment from the harmful effects of ionizing radiation. Ferrocyanides of transition metals are among the most highly effective and selective collectors for concentrating radionuclides. Under certain conditions of synthesis, ferrocyanide compounds can be formed having a layered structure, for example, the ferrocyanide 2Co2[Fe(CN)6] K4 [Fe(CN)6] 3H2O, however, taking into account the structure of the starting material it was decided to use Fe3+ polyhydroxy complexes as a modifying agent. The effect of the amount of modifiers on the sorption properties of cobalt ferrocyanide was studied in the course of the work.

The aim of the paper is investigation of neutralization of solvent vapors of the brand 646 by an adsorption-catalytic method. The adsorption-catalytic method includes the following stages: adsorption of the solvent components by adsorbent, thermal desorption and periodic flameless catalytic oxidation of organic substances to carbon dioxide and water. Synthetic zeolite of the NaX brand was used as a sorbent, catalyst was porous Al2O3/SiO2 ceramic foam material with an active catalytic phase. Solvent contains aceton, toluene, butylacetate, ethanol, ethyl cellosolve, n-butanol. It is shown that the value of the sorption volume of zeolite for each class of compounds depends on the certain factors: the length and structure of the carbon skeleton, the position of the hydroxyl group (for alcohols and esters), number of methyl groups in the molecules (for benzene derivatives). The conversion of the mixed solvent components was 65.4–90.1 %.

The paper analyzes the mineral acid vapors formation and their interaction with protective coatings based on bentonite clays, periclasite and shungite. A theoretical assessment of the acid vapor in the exhaust gases amount was carried out taking into account the performance of furnaces. Thermodynamic probability of acid vapor formation was calculated depending on the melting conditions for different types of melting units, the interaction of acid vapor with the components of protective coatings based on bentonite clays, periclasite and shungite was estimated.