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Adsorption treatment of industrial wastewater and reservoir water from toxic metals can reduce the anthropogenic load on water bodies. The efficiency of using an adsorbent obtained on the basis of local mineral raw material, namely burnt rock from the Erunakovskoe coal deposit (the Kemerovo Region), to remove heavy metal ions from aqueous solutions is shown. The kinetics of cadmium ion extraction from aqueous solutions, the adsorption models of Freundlich, Langmuir and Dubinin-Radushkevich, and their significance for the description of heavy metal ion recovery from aqueous solutions using burnt rock were studied. The dependence of adsorption on the acidity (pH) of the medium has been established. A maximum adsorption capacity of 30 to 40 mg/g was achieved at pH 12.0. Chemical modification with alkali (NaOH) at pH 12.0 leads to an increase in the degree of cadmium ions extraction. Within the studied concentration range, the Freundlich and Langmuir isotherms are more consistent with the experimental data on the equilibrium adsorption of metal ions on burnt rock, compared to the Dubinin-Radushkevich model.

A mesoporous carbon sorbent modified with sulphosalicylic acid by adsorption from aqueous solutions has been synthesized. The optimal modification parameters were selected: the ratio, concentration, the duration of impregnation and heat treatment stages, and pH. The physicochemical properties of the samples have been studied: textural characteristics, qualitative and quantitative composition of surface functional groups, the amount of applied modifier, adsorption and desorption properties. The adsorption characteristics of the studied samples with respect to organic dyes methylene blue and methanyl yellow are determined. It has been established that during desorption for 48 h, ~68 and ~82% of the initial concentration of sulphosalicylic acid applied to the sample pass into the aqueous solution, modelling the intestinal medium and into ethanol, respectively. In this case, a decrease in the pH of the initial solutions by 6 units is observed. High antibacterial properties of the modified carbon sorbent towards Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli, and Klebsiella pneumoniae have been established in vitro .

Compositions for the formation of three-component elastic cryogels based on the aqueous solutions of polyvinyl alcohol (PVA) and potato starch are proposed. It is shown that the viscosity of aqueous solutions depends both on the kind of polymer and on the total content of polymers in the system. The elasticity modulus of three-component cryogels depends on the concentration of starch in them and increases from 5 to 15 kPa with the addition of starch in the amount of 1-5 wt%. By introducing a dispersed material (soil) into the matrix of two-and three-component cryogels, due to the high adhesion of the polymer to the filler, the filled cryogels were obtained, with the elasticity modulus 16 times higher than that of cryogels without the filler. The introduction of potato starch in the amount of 5 wt% into PVA cryogel caused an increase in the time of its complete drying by 24 h, and an increase in its destruction during exposure in water by 5% within a week. Two-component cryogels exhibited sharply different types of behaviour during storage in water: PVA cryogel did not lose its mass, while mass loss by the cryogel of potato starch was 11% within a week. A decrease in the mass of three-component cryogels by 75-89% due to the loss of moisture and destruction was demonstrated in the soil test under the action of aboriginal soil microflora. The mass loss by the two-component cryogel based on PVA was 60%. Soil testing for phytotoxicity after the destruction of three-component cryogels revealed a decrease in the germination capacity of white mustard ( Sinapis alba L.) by 2-10% with respect to the reference experiment, depending on starch content, while for the reference two-component PVA cryogel the corresponding decrease was by 18%. Cryostructuring of the upper soil layer by PVA cryogel caused an increase in the dry above-ground mass of plants by 3.2% in comparison with the reference, while the cryogel with potato starch caused an increase by 7.1%, and cryogel based on PVA and potato starch gave 9.4%.

Methanation process, or selective hydrogenation of carbon oxides, is described. The chemical foundations of the process and the features of the formation of reaction products are considered, depending on the catalyst used. The advantages of catalytic systems based on carbon materials and disadvantages of the catalysts on oxide substrates for the production of synthetic methane are evaluated. Nickel-containing carbon catalysts based on birch activated carbon and microcellulose were obtained by incipient wetness impregnation and hydrothermal synthesis, and proposed for the selective hydrogenation of carbon monoxide (СО). The synthesized samples were studied by optical emission spectroscopy with inductively coupled plasma, low-temperature nitrogen adsorption, scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction, thermogravimetric analysis. The influence of the substrate and the method of catalyst synthesis on CO conversion and methane yield from the selective hydrogenation of CO was studied, and the optimal size of NiO and Ni(OH)₂ crystallites, the precursors or the active phase, was determined. It is shown that the best carbon monoxide conversion and methane yield from methanation reaction are achieved in the presence of nickel-containing microcellulose-based carbon sample obtained by hydrothermal synthesis.

An algorithm is presented for identifying potential production chains for resource-based regions relying on patent analytics, in particular, applying patent landscape report creation approaches and peer review, which in the future, after their economic justification, can become the foundation for the new strategy of innovative development for a resource-based region. Within this strategy, it is planned to create new high-tech economy sectors in the field of coal mining and coal processing.

The breadth of the use of activated carbons (AC) in many areas of economy, ecology and defense of the country is shown. The unique physicochemical characteristics of AC are denoted, and their modern determination is presented. It is established that the Russian Federation is currently lagging far behind industrialised countries in the output of AC production. Attention is paid to the coals of Kuzbass as a raw material for the large-tonnage production of AC. Various technologies for manufacturing active coals on this basis are considered.

1-(Pentafluorophenyl)propan-1-one reacts with zinc in the presence of catalytic amounts of SnCl₂ under heating in dimethyl formamide to give (2,3,5,6-tetrafluoro-4-propionylphenyl)zinc chloride and bis(2,3,5,6-tetrafluoro-4-propionylphenyl)zinc. 1,1'-(2,3,5,6-Tetrafluoro-1,4-phenylene)dipropan-1-one was synthesized from these organozinc compounds and propionyl chloride in the presence of CuI. The reaction of organozinc compounds obtained from 3-bromo-1,2,4,5-tetrafluorobenzene leads to the formation of 1-(2,3,5,6-tetrafluorophenyl)propan-1-one

The interaction of alkyl(4-X-2,3,5,6-tetrafluorophenyl)sulphanes (X = H, CF₃) containing difluoromethyl and benzyl groups as alkyl components with hydrogen peroxide in acetic or trifluoroacetic acid gave the corresponding sulphonyl derivatives. The effect of the acid used on the reaction result was established in the case of (difluoromethyl)[4-(trifluoromethyl)-2,3,5,6-tetrafluorophenyl]sulphane. The synthesis of 1-alkylsulphonyl-2,3,5,6-tetrafluorobenzenes scaling possibility to tens of grams was demonstrated. Product yields were 84-97%.

The synthesis of urea and thiourea containing adamantane and campholene fragments was performed starting from adamant-1-yl isocyanate, adamant-1-yl isothiocyanate and campholenyl amine. The synthesised compounds were modified to their oxalyl derivatives, which may be of interest for biological activity screening.

The paper presents the results of applying the methodology of chemical fingerprinting to survey the territories of industrial and natural objects, environmental accidents and objects of accumulated environmental damage in various regions of Siberia, including the Arctic zone of Russia. The data obtained by GC/MS using the capabilities of targeted and survey ecological analysis are presented. Polycyclic aromatic hydrocarbons, polychlorinated biphenyls, various classes of hydrocarbons, including relict oil biomarkers, chloro- and methylphenols, Cl-, N-, S-, O-organic compounds of various classes were considered as pollutants. The most important tools of chemical fingerprinting are considered, and it is shown that the use of a set of data on marker compounds of various types, diagnostic ratios of characteristic compounds, multi-vector chromatographic profiling of characteristic compounds ("fingerprints") makes it possible to establish the origin of pollution sources with a high degree of probability.