Вісник НТУУ "КПІ імені Ігоря Сікорського". Серія: Хімічна інженерія, екологія та ресурсозбереження
Постійне посилання на фонд
ISSN 2664-1763 (Online), ISSN 2617-9741 (Print)
Періодичність: 2 рази на рік
Рік заснування: 1982
Тематика: проблеми екології, хімічної інженерії, ресурсо- та енергозбереження, хімічного, нафтопереробного, полімерного та силікатного машинобудування.
Офіційний сайт: https://chemengine.kpi.ua//
Рік заснування: 1982
Тематика: проблеми екології, хімічної інженерії, ресурсо- та енергозбереження, хімічного, нафтопереробного, полімерного та силікатного машинобудування.
Офіційний сайт: https://chemengine.kpi.ua//
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Документ Відкритий доступ Biochar for wastewater treatment – a Minireview**(КПІ ім. Ігоря Сікорського, 2021) Johansson Westholm, LenaДокумент Відкритий доступ Block catalytic system for neutralization of carbon monoxide based on aerated concrete(КПІ ім. Ігоря Сікорського, 2021) Ivanenko, Olena; Radovenchyk, Vіacheslav; Karvatskii, Аnton; Mikulionok, Іgor; Plashykhin, Serhii; Overchenko, Tetiyna; Nosachova, Yuliia; Dovholap, SerhiiДокумент Відкритий доступ Comparative study of the antifungal activity of cations of Ce, La, Ag and their nanocomposites(КПІ ім. Ігоря Сікорського, 2026) Atamanchuk, Alisa; Lavrynenko, Olena; Vember, ValeriiaIn this study, a comparative analysis of the antifungal activity of cations of cerium, lanthanum and silver, as well as nanosized oxides and silver-containing composites based on rare earth elements (REE), was performed. The oxides were synthesized by chemical precipitation followed by thermal treatment at 400-600 °C and characterized using X-ray diffraction, scanning electron microscopy, energy-dispersive spectroscopy and electrokinetic methods. Cerium dioxide formed a fluorite-type crystal structure, while lanthanum oxide crystallized in a hexagonal system. Silver formed metallic clusters on oxide surfaces due to Ce+ / Ce4+ oxidation and Ag+ / Ag0 reduction processes. Antifungal activity was evaluated against Aspergillus niger, Candida albicans, Cyberlindnera jadinii, Mrakia aquatica, and Penicillium polonicum using the agar diffusion method. Silver nitrate solutions showed the strongest inhibitory effect against all tested fungi. Unmodified oxides demonstrated limited activity, inhibiting only P. polonicum. In contrast, silver-modified oxides exhibited enhanced antifungal activity against most tested strains. Overall, silver cations and containing them nanocomposites showed larger inhibition zones compared to the antibiotic control, indicating their high potential as antifungal agents.Документ Відкритий доступ Comparison the modern controllers’ efficiency for the spray dryer’s control system(КПІ ім. Ігоря Сікорського, 2024) Sytnikov, Oleksii; Skladannyy, Denys; Plashykhin, Sergii; Sokolov, KostiantynSpray drying is one of the widely used drying process in chemical, pharmaceutical, and food industry. This process allows removing water from the product, which is produced in the solution form, and turn the finished product into a flowing powder material. It is obvious that such a process requires a significant amount of thermal energy, which is spent on the water evaporation. In addition, as in any drying process, in spray drying there is a problem with possible material over-drying. Therefore, the task of qualitative regulation of the spray drying process remains relevant. In this article, we attempt to compare the efficiency of two modern controllers for controlling the spray drying process. This is known in the theory of control of dynamic objects using predictive models model predictive controller and a fuzzy controller based on linguistic variables. The regulators choice due to both their popularity and high control quality indicators, which are given in published scientific works. The study was performed on based on spray drying process models, which were obtained in the previous work of the authors. In the research we used the software package MATLAB Simulink for control systems simulation. The research result show, that using the MPС-controller in the spray dryer’s control system allow to reduce the transient processes time. However, in case of a fuzzy controller, the control system partially levelling the mathematical model’s inaccuracy.Документ Відкритий доступ Dependence of corrosion activity of aquaticpetroleum mixtures on characteristics of aquatic environments(КПІ ім. Ігоря Сікорського, 2022) Homenko, Anna; Gomelya, Mykola; Мakarenko, Iryna; Shabliy, TetianaДокумент Відкритий доступ Determining locations for developing an air quality monitoring system in a rapidly developing urban area (a case study of the city of Kyiv)(КПІ ім. Ігоря Сікорського, 2025) Hnatiuk, Viacheslav; Legotina, Olga; Shabliy, TetyanaA large population characterizes the modern development of society, and consequently, increasing economic and energy demands. Significant emissions of industrial pollutants into the atmosphere, vehicle exhaust, and the use of chemical substances in daily life contribute to the deterioration of air quality and exacerbate climate change. In addition, Ukraine has faced unprecedented damage to atmospheric air quality caused by the large-scale armed aggression. Kyiv ranks among the most polluted cities in the country and occasionally appears at the top of global air pollution rankings. For instance, in 2023, the average annual concentrations of sulfur dioxide, nitrogen dioxide, formaldehyde, and phenol in Kyiv exceeded the average daily maximum permissible concentrations by 1.5 to 2.5 times the recommended levels. The Central Geophysical Observatory, which monitors the city's air quality and holds the most detailed information on the subject, urgently requires modernization. This includes expanding the monitoring network and enhancing its technical and informational infrastructure. At the same time, the capital is a leader in urban digitalization not only in Ukraine but also across Europe. Against this backdrop, the renewal and expansion of Kyiv's environmental monitoring system, particularly in terms of air quality, must become a priority. Additionally, the connection between the capital and the surrounding region is continuously intensifying, leading to increased anthropogenic pressure on air quality from transport. This paper presents the structure of the Kyiv agglomeration. It proposes a project for the tentative placement of air quality monitoring system locations in the city of Kyiv, taking into account the locations of major development clusters within the agglomeration.Документ Відкритий доступ Development of a spray dryer’s mathematical model for control tasks(КПІ ім. Ігоря Сікорського, 2023) Sytnikov, Oleksii; Skladannyy, Denys; Sokolov, KostiantynThe sustainable development paradigm includes the most efficient material and energy resources using in production processes. One of the ways to achieve this goal is creating the effective automated control systems. At the same time, such systems effective functioning is impossible without adequate mathematical models for control objects. Thus, the actual task of this study is to create the control object – a spray dryer -model-, which could be used in the control system. It was established that one of the main devices in the sodium tripolyphosphate production is a spray dryer in which the aqueous salts suspension is dried by flue gases. The obtained powdery product which is fed into the calcination furnace. The work investigated convective drying, where the material is in direct contact with the drying agent – furnace gas. To drying process control by the drying agent temperature. The existing works analysis showed that the mathematical model developing process of a spray dryer requires in-depth research into the physical nature of processes which taking object's operation’s various factors into account. The object presentation can be carried out with different approaches taking into account various important production factors, but at the same time it should be as close as possible to the nature of process. The development of the spray drying process model is carried out for regulation the moisture at the finished product. The beginning of the research is the structural and parametric diagram creation of a spray dryer taking into account all input and output values which allow to determine the control disturbance channels. A material balance based on the moisture and loose matter amount and a gas environment heat balance is compiled. The transfer functions component calculation is carried out using the Kramer method. The presented results of the research make it possible to build and analyse the spray dryer mathematical model taking into account the requirements for the substance moisture content be dried and the control process analysis by the drying agent temperature changing. The transient characteristics of the spray dryer by the disturbance and control channels, which are calculated and presented in the research make it possible to compare the control object behaviour with and without taking heat loss into the environment the assumptions into account.Документ Відкритий доступ Evaluation of efficiency of coagulant obtained from elaborated red sludge from alumina plant(КПІ ім. Ігоря Сікорського, 2020) Kryzhanovska, Y. P.; Gomelya, M. D.; Radovenchik, Y. V.; Shabliy, T. O.; Migranova, V. O.Документ Відкритий доступ Evaluation of the effectiveness of an amido-containing corrosion inhibitor in mineralized water-oil environments(КПІ ім. Ігоря Сікорського, 2025) Kosmyna, Mykola; Nosachova, YuliiaIn this work, the effectiveness of inhibiting corrosion processes in mineralized water-oil media using a complexing amine-containing corrosion inhibitor was investigated in detail. The inhibition efficiency and corrosion rate were determined using the massometric method. According to the results of the experiments, it was found that the thiourea inhibitor was most effective in a medium with a NaCl concentration of 3 % and 10 % at pH 6-7 and doses of 10-50 mg/dm3. It was under such conditions that a significant decrease in the corrosion rate was observed compared to control samples without an inhibitor. In addition, the influence of temperature and acidity of the medium was an important factor. It was shown that at a weakly acidic pH and an elevated temperature of 80 °C, thiourea demonstrated increased inhibitory properties. At the same time, the results obtained indicate that the inhibitor is effective at lower temperatures. In particular, some of the experimental data demonstrate a high level of metal protection in environments with a fixed pH value at a temperature of 20 °C. After the conducted studies, it can be stated that the amino-containing inhibitor thiourea is a promising corrosion inhibitor for use in mineralized water-oil systems.Документ Відкритий доступ Evaluation of the efficacy of alkylimidazolines in reducing the corrosion aggressiveness of oilcontaining waters(КПІ ім. Ігоря Сікорського, 2022) Homenko, Anna; Gomelya, Mykola; Shabliy, TetianaДокумент Відкритий доступ Evaluation of the electroflotation efficiency for the oil-containing shipping waters treatment(КПІ ім. Ігоря Сікорського, 2023) Vozniuk, Marta; Shabliy, TetianaThe article describes the problems of formation and purification of ship oil-containing waters. The effectiveness of electroflotation using aluminum and iron anodes for the extraction of oil from water-oil emulsions with different mineralization was assessed. Electroflotation treatment of water-oil solutions provides 98.6–99.9 % oil removal using aluminum or iron electrodes at an anodic current density of 1.65–7.39 A/dm2 for highly mineralized waters and 0.07–0.50 A/dm2 for fresh water. Water treatment during the first 15 minutes provides a sharp decrease in oil content from 100 mg/dm3 to 1.31–2.52 mg/dm3, almost regardless of the type of anode metal. The efficiency of oil extraction from water mainly depends on its mineralization. In mineralized (salty) water, the treatment process is more efficient. In fresh waters, aluminum anode provides higher water purification efficiency compared to iron anode. However, in the case of pre-treatment of the iron anode with an alkali solution with the formation of a magnetite layer on it, this anode is characterized by the highest purification efficiency for low-salt waters, providing a degree of water purification at the level of 99.9 %.Документ Відкритий доступ Features of carbon nanotubes deposition on a polymer substrate by cold gas-dynamic spray technique(КПІ ім. Ігоря Сікорського, 2025) Gondliakh, Oleksandr; Yankovskyi, Illia; Antonyuk, SergiyCold gas-dynamic spraying of carbon nanotubes onto polymer substrates is a promising technique for the formation of functional coatings. However, the process of particle deposition on polymer substrates remains insufficiently studied. In this study, a numerical model was developed to analyze the mechanisms of contact interaction between nanotubes and a polyetheretherketone substrate during deposition. The effect of particle velocity on plastic deformation, local heating, and the conditions for nanotube bonding to the polymer substrate has been investigated. The obtained results show the existence of a threshold velocity at which effective mechanical bonding occurs. The conditions for local temperature rise in the substrate, which may promote the formation of a stable nanocomposite coating, have also been analyzed. The proposed model enables the prediction of optimal deposition parameters to ensure high efficiency of nanotube depositionДокумент Відкритий доступ Features of cascading disk-gear extrusion of plastics(КПІ ім. Ігоря Сікорського, 2021) Kovba, A.; Shved, M.; Shved, D.Документ Відкритий доступ Gause's principle against Dennis Meadow’s(КПІ ім. Ігоря Сікорського, 2020) Shabliy, O. V.; Sidorov, D. E.; Huryeva, L. N.; Glushchenko, M. O.Документ Відкритий доступ Increasing the efficiency of transfer processes when using inhomogeneous fluidization(КПІ ім. Ігоря Сікорського, 2023) Kornienko, Yaroslav; Haidai, Serhii; Sameliuk, OleksandrThe processes of dehydration and granulation are associated with the heat transfer to the solid particles from the gas coolant, which acts as a fluidizing agent and causes the stochastic movement of the granular material in the apparatus. To implement the layered structure mechanism of granulation of organic-mineral fertilizers it is necessary to ensure intensive circulation of granular material with intensive gradual passage through the appropriate technological zones of the apparatus. The main problem is the low efficiency of interphase exchange in the gas-liquid-solid system and the formation of agglomerates during granulation with the injection of a liquid heterogeneous solution into the bed of solid granular material. In this work the conditions for increasing the efficiency of the transfer processes when using an inhomogeneous jet-pulsating mode of fluidization were determined. Analysis of the intensity of renewal of the contact surface of the phases when using inhomogeneous jet-pulsating fluidization in the self-oscillating mode was carried out. It was established that the use of this mode of fluidization allows getting a significant intensification of heat and mass transfer processes due to the activation of diffusion-controlled processes and an increase in the dynamics of interphase contact exchange by 1.9÷2.9 m2/s, which is 27÷41% of the total surface of the material in device.Документ Відкритий доступ Influence of carbon nanotubes on the characteristics of polymer melt flow during extrusion of two-layer pipes(КПІ ім. Ігоря Сікорського, 2025) Gurin, Roman; Gondliakh, Oleksandr; Sokolskyi, Oleksandr; Shcherbina, Valerii; Antonyuk, SergiyThis paper presents the results of numerical simulation of the extrusion process of two-layer polymer pipes in a two-dimensional axisymmetric formulation using the ANSYS Polyflow software package. The influence of the introduction of multi-walled carbon nanotubes (MWCNTs) into polypropylene (PP) on the rheological properties of the melt and the flow characteristics in the extrusion head was investigated. The Bird-Carreau model was used to describe the viscosity of the PP/MWCNT composite, taking into account the concentrations of MWCNTs (0, 1, 2, 4, and 8 wt%). The second layer of the pipe was made of polyvinyl chloride (PVC). An analysis of the distributions of pressure, melt flow velocity, and layer thicknesses of the extruded pipe was conducted. It was found that with increasing MWCNT content, the viscosity of the PP/MWCNT composite significantly increases, leading to an increase in pressure in the extrusion head (from 91.3 kPa at 0 wt% to 28.5 MPa at 8 wt%) and affecting the layer thickness distribution: the thickness of the PP/MWCNT layer decreases from 2.49 mm to 1.70 mm, while the thickness of the PVC layer increases from 2.50 mm to 3.45 mm. The optimal concentration of MWCNTs was determined to be 2 wt%, which provides balanced rheological characteristics and stable pipe geometry (total thickness of 5.23 mm). At a concentration of 8 wt%, the PP/MWCNT layer remains intact, but its thickness becomes insufficient for practical use. The obtained data allow optimizing the composition of the polymer nanocomposite and the parameters of the extrusion process for the production of two-layer pipes with specified properties.Документ Відкритий доступ Method for PID-tuning via feedback control system pole placement(КПІ ім. Ігоря Сікорського, 2022) Zhuchenko, A. I.; Putiatin, R. O.Pole placement is the only PID-tuning technic that allows one to obtain a control system with desired, and, moreover, highly predictable performance and control quality. Number of controller tuning parameters is equal to number of poles closed-loop poles it can precicely place, so that PID-controller can place exactly three poles, and PI- can place only two. For this reason PI-controller is best used with first-order processes (second-order closed loop system), and PID-controller with second-orded ones (third-order closed loop system). However, many processes have higher order than two, and still are controlled with PID-controllers. To tune it using pole placement techniques, it is necessary to consider only dominant poles, which affect performance of the system to the greatest extent. First, it is necessary to study a PI-controller with a second-order process, which is the most basic case. Tuning is performed using global optimization methods to fit dominant poles of a tuned system to dominant poles of a reference system.Документ Відкритий доступ Modelling of high performance electrocoalescer based on experimental data(КПІ ім. Ігоря Сікорського, 2023) Putiatin, R. O.; Tsapar, V. S.Modern approaches to automatic control of crude oil dewatering and desalting are predominantly model-free, and described model-based systems lack precise mathematical description. Not a single research provides a dynamic input-output model for electric dehydrator, suitable for control system development. As far as electric dehydrator, which is the main plant to control in the process, is a non-linear system with distributed parameters, a need for linearization arises. The aim of present study is to compare different methods for obtaining approximate transfer function of an electric dehydrator from graphical experimental data.Документ Відкритий доступ Morphological content and recyclability of separate collected packages: a case study for Kaunas, Lithuania**(КПІ ім. Ігоря Сікорського, 2021) Mickevičiūtė, Evelina; Šleiniūtė, Agnė; Pitak, Inna; Mumladze, Tamari; Sholokhova, Anastasiia; Denafas, GintarasДокумент Відкритий доступ Optimization of the nanofiltration process: a mini-review(КПІ ім. Ігоря Сікорського, 2026) Ivanenko, Olena; Huliienko, Serhii; Kornienko, Yaroslav; Halysh, VitaNanofiltration is the perspective and effective process for wastewater treatment. The maintenance of optimal condition is essential for providing of effective performance of nanofiltration equipment. In this analytical review the issue of optimization of the nanofiltration process during the 2011-2020 years was considered, in particular, the topics of the setting of the optimization problem, choice of the criterion of optimality, and the formulation of the objective function with using both mechanistic and statistical models. Also, the applied methods of optimization problem solution and software were briefly considered. It was defined the statistical methods were used in a wider range in comparison with the mechanistic models based optimization, despite the limitations of the range of applicability of such an approach. Correspondingly, in most work, the specialized software for the experiment design was used. The fields of the practical application of the results of the optimization of the nanofiltration process were also analyzed. It was pointed out that for the optimization of nanofiltration, a narrower variety of approaches was applied in comparison with reverse osmosis, which is the closest to the nanofiltration process.