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Dissolution Kinetics of Nickel(II) Hydroxide in a Mixed Ammonia–Carbonate Solution Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-07-06 S. V. Dobrydnev, O. A. Alexandrova, Yu. G. Rezvov
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Application Regularities of Heat Pumps in Extractive Distillation Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-07-06 P. S. Klauzner, D. G. Rudakov, E. A. Anokhina, A. V. Timoshenko
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Comparison of Hydrogenation and Oxidation Methods for Improving the Performance of Marine Gasoil Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-07-06 Z. N. Artemeva, S. G. Dyachkova, T. N. Gershpigel’, E. V. Prudnikova
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Optimization of Steam Reforming of Methane in a Hydrogen-Filtering Membrane Module with a Nickel Catalyst and a Palladium-Alloy Foil Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-07-06 V. N. Babak, L. P. Didenko, L. A. Sementsova, Yu. P. Kvurt
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A New Class of Exact Solutions of the Oberbeck–Boussinesq Equations Describing an Incompressible Fluid Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-07-06 V. V. Privalova, E. Yu. Prosviryakov
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Analytical Review of the Papers Presented at the International Scientific and Technical Symposium “Improving the Energy and Recourse Efficiency and Environmental Safety of Processes and Apparatuses in Chemical Industry and Allied Branches” Dedicated to the 110th Anniversary of A.N. Planovskii Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-07-06 M. K. Kosheleva, V. S. Belgorodskii, N. N. Kulov
Abstract The papers analyzed here were presented in the reposts of leading scientists in the processes and apparatuses of chemical technology and published in the Proceedings of the International Scientific and Technical Symposium “Improving the Energy and Recourse Efficiency and Environmental Safety of Processes and Apparatuses in the Chemical Industry and Allied Branches,” which was dedicated to
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Obtaining Tungsten, Titanium, and Molybdenum Powders during their Dispersion in Pulsed Discharges in Aqueous Solutions Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-07-06 R. K. Bairamov, M. Yu. Grigoriev, G. P. Panasyuk, I. V. Kozerozhets, I. V. Tatarinova
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Volumetric Studies on Aqueous Lithium Pentaborate Solution from 288.15 to 323.15 K Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-07-06 Hai-wen Ge, Min Wang
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Application of a First Principles Mathematical Model of a Mass-Transfer Technological Process to Improve the Accuracy of the Estimation of the End Product Quality Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-07-06 S. A. Samotylova, A. Yu. Torgashov
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Influence of Saturation Temperature on Pressure Drop during Condensation of R-134a inside a Dimpled Tube: A Numerical Study Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-07-06 N. V. S. M. Reddy, K. Satyanarayana, S. Venugopal
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Application of Mathematical Modeling in Technology for the Recovery of Rubber from Latex in a Magnetic Field Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-07-06 Y. E. Gryadunova, S. S. Nikulin, L. N. Stadnik
Abstract The paper presents a study of the process of the isolation of styrene-butadiene rubber from latex with the method of mathematical planning for a full factorial experiment (23). Regression equations that describe the effect of coagulant consumption, as well as the intensity and duration of magnetic field exposure on the process of obtaining rubber from latex, have been obtained. The physical
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Analysis of Extraction Separation in a Cascade of Mixing-Settling Extractors in a Recirculation Liquid-Liquid Chromatography Mode Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-07-06 A. E. Kostanyan, Yu. A. Klychevskikh, N. A. Milevskii, T. S. Safonov, A. A. Voshkin
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Intensification of the Process of Separation of Oil Emulsions by Exposure to Ultrasonic Radiation Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-07-06 D. D. Fazullin, G. V. Mavrin, L. I. Fazullina
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Calculation of the Interphase Heat and Mass Transfer in a Nozzle Spray Cone Taking into Account the Drag Crisis and the Heat- and Mass-Transfer Crisis Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-07-06 N. N. Simakov
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Description of the Operation of a Biochemical Reactor by a Diffusion Model Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-07-06 L. Yu. Aleksandrova, A. I. Moshinskii
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Search for the Optimal Regime Parameters of a Catalytic Process Based on Evolutionary Computations Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-05-30 E. V. Antipina, S. A. Mustafina, A. F. Antipin
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Simulation of the Process of the Hydrocycloning of Particles of “Light” Fractions on the Filtering Surface of a Drain Pipe Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-05-30 A. B. Golovanchikov, M. I. Lamskova, A. E. Novikov, M. I. Filimonov
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Mathematical Model of Contact Cooling and Purification of the Dispersed Phase of Gases in Packed Scrubbers Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-05-30 E. A. Lapteva, A. G. Laptev, S. W. Alasgarli
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Low-Temperature Catalytic Decomposition of N2O Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-05-30 K. O. Denisova, A. A. Il’in, A. P. Il’in, Yu. N. Sakharova
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Combination of Variational and Empirical Methods to Determine the Porosity during the Deposition of Spherical Particles Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-05-30 A. M. Trushin, M. A. Nosyrev, L. V. Ravichev, S. I. Frolova, V. E. Yashin, S. I. Ilyina
Abstract A combination of variational and empirical methods to determine the porosity is used to give a theoretical explanation of the power-law dependence of the dimensionless velocity of the constrained motion of particles during sedimentation.
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Heat and Mass Transfer in a Dense Layer during Dehydration of Colloidal and Sorption Capillary-Porous Materials under Conditions of Unsteady Radiation-Convective Energy Supply Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-05-30 P. V. Akulich, D. S. Slizhuk
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Theoretical and Practical Foundations of the Selective Separation of Phosphate Ions from Phosphate Ores with a High Content of Iron Impurities with the Recirculation Method Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-05-30 D. Yu. Turaev, I. A. Pochitalkina
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Influence of the Surface Structure on the Wettability of Polymer Packing Elements in Heat- and Mass-Transfer Equipment Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-05-30 P. D. Vasiliev, A. A. Sidyagin, A. V. Stepykin, D. M. Bukharov, I. A. Balakhnin
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Application of Artificial Neural Networks for the Analysis of Data on Liquid–Liquid Equilibrium in Three-Component Systems Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-05-30 G. Kh. Misikov, A. V. Petrov, A. M. Toikka
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Self-Sustaining Water Softening–Desalination Processes: Chloride–Sulfate Systems Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-05-30 R. Kh. Khamizov, I. V. Komarova, N. K. Galkina, A. G. Prudkovskii
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Extraction of Cu(II), Ni(II), and Al(III) with the Deep Eutectic Solvent D2EHPA/Menthol Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-05-30 I. V. Zinov’eva, A. V. Kozhevnikova, N. A. Milevskii, Yu. A. Zakhodyaeva, A. A. Voshkin
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Modeling of Steam Propane Reforming in a Catalytic Membrane Reactor at High Temperatures Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-05-30 V. N. Babak, L. P. Didenko, L. A. Sementsova, Yu. P. Kvurt
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Effect of Macro- and Micromixing on Processes Involved in Solution Synthesis of Oxide Particles in Mocroreactors with Intensively Swirling Flows Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-05-30 R. Sh. Abiev, I. V. Makusheva
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Synthesis of a Nanocomposite Containing CTAB-stabilized Fe3O4 Magnetic Nanoparticles and a Comparison between the Adsorption Behavior of Cobalt ions on the Nanocomposite and Typha latifolia L. Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-04-22 E. Rezaei-Aghdam, A. Shamel, M. Khodadadi-Moghaddam, G. Ebrahimzadeh-Rajaei, S. Mohajeri
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Influence of Wake Flows on the Processes of Heat and Mass Exchange in Apparatuses with Mixing Devices Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-04-22 V. M. Barabash, M. A. Belevitskaya, N. N. Kulov
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Stability of Nonstationary States of a Biotechnological Process for the Production of Lactic Acid Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-04-22 Yu. L. Gordeeva, L. V. Ravichev, E. L. Gordeeva
Abstract Estimates are given of the stability of stationary states of a process of microbiological synthesis with the use of mathematical models of kinetics based on an unstructured approach. The object of research is a continuous biotechnological process, in which, in addition to biomass, the target product is obtained. The stability was assessed with the Hurwitz matrix. The process uses a component
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Simulation of Sorption Purification of Hydrocarbon Fuel from Sulfur Compounds with Transition-Metal Pivalates Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-04-22 A. O. Okhlobystin, A. S. Kamyshnikova, K. V. Oleinikova, K. P. Pashchenko, V. N. Storozhenko, M. A. Kiskin, N. T. Berberova, I. L. Eremenko
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Mathematical Modeling of Gas–Liquid Flow Patterns in an Annular Space with a Rotating Inner Cylinder Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-04-22 I. V. Morenko
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Effect of Hydrodynamic Conditions on Micromixing in Impinging-Jets Microreactors Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-04-22 R. Sh. Abiev, A. A. Sirotkin
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State of the Art and Prospects for Studies of Structure Formation in Extraction Systems with Metal Compounds Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-04-22 N. M. Murashova, E. V. Yurtov
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Evaluation of Supercritical Fluid Extraction Model Parameters by Monte-Carlo Methods Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-04-22 A. A. Salamatin, A. S. Khaliullina
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Logical and Information Models of the Processes of Maintenance of Boiler Installations of Chemical and Technological Systems Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-04-22 V. P. Meshalkin, E. R. Moshev, V. D. Belov, M. A. Romashkin, V. G. Vlasov, M. G. Schnitzlein
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Calculation of the Equilibrium Distribution of Nicotinic Acid and Iron(III) Between an Aqueous Solution and Sulfocationite Dowex-50 Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-04-22 G. N. Altshuler, E. V. Ostapova, O. G. Altshuler
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Extractive Separation of Co/Ni Pair With the Deep Eutectic Solvent Aliquat 336/Timol Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-04-22 N. A. Milevsky, I. V. Zinovieva, Yu. A. Zakhodyaeva, A. A. Voshkin
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Study of the Dynamic Modes of the Operation of Flowsheets for the Extractive Distillation of a Benzene–Cyclohexane–Toluene Mixture Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-04-22 A. S. Burachuk, E. A. Anokhina, A. V. Timoshenko
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Measurement of Velocity Fields in a Machine with a Two-Blade Mixer via Digital Tracer Visualization Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2022-04-22 K. A. Alekseev, A. G. Mukhametzyanova
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Comparison of the Sorption Capacity of Different Brands of Activated Carbon Relative to Argon, Krypton, and Xenon with the Natural Isotopic Composition under Static Conditions Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2021-12-29 Magomedbekov, E. P., Merkushkin, A. O., Obruchikov, A. V., Sakharov, D. A.
Abstract The Henry constants upon the adsorption of inert gases with a natural isotopic composition (argon, krypton, and xenon) on activated carbon of the AG-3, VSK-5, SKT-3, and NWC 12x40 brands in a temperature range of 15–80°C are determined. A positive correlation of the Henry constants with the specific surface and micropore volume and surface normalized to the unit volume of the solid phase is
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Automated Process Design of the Optimal Heat-Exchange Network of a Mash Distillation Plant Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2021-12-29 Emel’yanov, I. I., Ziyatdinov, N. N., Lapteva, T. V., Ryzhova, A. A., Semin, R. V.
Abstract Decomposition NLP/LP/NLP methods are considered for the automated process design of the economically optimal distributed heat exchange networks between process streams using the assignment problem. The principle of fixation of intermediate variables and issues of the design of the superstructures of a heat exchange network and their decomposition are discussed. Methods to reduce the computational
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Membrane Extraction of Ag(I), Co(II), Cu(II), Pb(II), and Zn(II) Ions with Di(2-Ethylhexyl)phosphoric Acid under Conditions of Electrodialysis with Metal Electrodeposition Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2021-12-29 Sadyrbaeva, T. Zh.
Abstract New methods for extracting cobalt and zinc ions from sulfuric acid solutions, of silver and lead ions from nitric acid solutions, and of copper ions from hydrochloric acid solutions with liquid membranes based on di(2-ethylhexyl)phosphoric acid under conditions of galvanostatic electrodialysis with cathodic electrodeposition of metals are presented. Almost complete (93–100%) extraction from
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Mathematical Modeling of a Biotechnological Continuous Fermentation Process for Lactic Acid Production: A Review Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2021-12-29 Gordeeva, E. L., Ravichev, L. V., Borodkin, A. G., Gordeeva, Yu. L.
Abstract The results of an analysis of mathematical models for a continuous fermentation process for lactic acid production have been presented. Mathematical models are represented by equations with the kinetics of the formation of lactic acid for strains of the following types: strains that consume only the main substrate (most frequently, glucose) and do not form by-products; strains that form by-products;
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Numerical Simulation of Taylor–Couette Flows with Rotating Outer Wall Using a Hybrid Spectral/Finite Element Method Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2021-12-29 Nabila Ouazib, Salhi, Yacine, El-Khider SI-Ahmed, Legrand, Jack, Arhaliass, Abdellah, Degrez, Gérard
Abstract Taylor–Couette flow between independently rotating cylinders with a relatively small aspect ratio Γ = 2.4 has been investigated numerically. The Navier–Stokes equations with the uncoupled convection-diffusion-reaction equation are solved using a spectral development in one direction combined together with a finite element discretization in the two remaining directions. The study includes the
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Solving the Inverse Problem for Chemical Reactions Occurring in a Plug-Flow Reactor Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2021-12-29 Kol’tsov, N. I.
Abstract A method is described to solve the inverse problem of chemical kinetics (estimation of the rate constants for elementary steps of chemical reactions) from the data of nonstationary experiments in an open isothermal plug-flow reactor without using optimization algorithms. This method is used to determine the rate constants for elementary steps and the intervals of their values for reactions
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Phase Diagram, Equilibrium Data, and Correlation for Aqueous Two-Phase System Formed by Tetrahydrofuran and Sorbitol Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2021-12-29 Khadijeh Pourkhanali, Gholam Khayati
Abstract The importance of aqueous two-phase systems has been increased recently as a method with greater performance capability in separation and purification of biological products along with economic and operational advantages compared to the conventional methods. However, the thermodynamic modeling of some of applicable aqueous two-phase systems like tetrahydrofuran + polyols has not yet developed
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Analyzing the Efficiency of Using Different Chemical Compositions for Intensifying the Phytoextraction Processes of Mercury and Other Heavy Metals Based on Multivariate Image Tools Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2021-12-29 Makarova, A. S., Meshalkin, V. P., Nikulina, E. A., Vocciante, Marco, Baranova, Ya. P.
Abstract A method is proposed and multifactorial experiments are carried out to determine the effectiveness of various compositions of chemical additives for intensifying the processes of phytoextraction of mercury and other heavy metals from soils. White creeping clover (lat. Trifolium repens L.) is used as the object of experiment. As a result of a systematic analysis of the results of experiments
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Current State of Research in the Field of Detritiation of Technological Water Flows: A Review Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2021-12-29 Magomedbekov, E. P., Rastunova, I. L., Kulov, N. N.
Abstract The problem of tritiated wastewater treatment is a pressing challenge in many countries. The principal man-made sources of tritium are nowadays represented by nuclear reactors of different applications, as well as plants for processing spent nuclear fuel. This article presents a review of literature data dedicated to the problems of formation of tritium in nuclear energy installations of various
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Studying the Sorption Processes of Rare-Earth Elements with the Use of Sulfocationites from Nitric Acid–Phosphoric Acid Solutions in a Pulsed Column Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2021-12-29 D. A. Elatontsev, A. P. Mukhachev
Abstract The kinetics of sorption and regeneration from industrial nitric acid–phosphoric acid solutions with the use of ion-exchange resins like KU-2 has been studied for both individual rare-earth elements (REEs) and their mixtures with the measurement of sorption and regeneration isotherms. The high rate of the mentioned processes enables the use of these resins in pulsed columns with a fluidized
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Acquisition, Properties, and Application of Nanosized Magnesium Oxide Powders: An Overview Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2021-12-29 I. V. Kozerozhets, G. P. Panasyuk, L. A. Azarova, V. N. Belan, E. A. Semenov, I. L. Voroshilov, M. N. Danchevskaya
Abstract This review is devoted to describing the main synthesis methods, the properties of MgO nanoparticles, and their areas of application, such as the creation of coatings for transformer and other types of steels, coatings on glass to control the energy of transmitted solar radiation, the creation of transparent and translucent one-component ceramics, the creation of multicomponent ceramic compositions
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Tandem Mass Spectrometry for the Analysis of Ginsenosides in a Phytoadaptogene Composition with Antitumor Properties Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2021-12-29 I. V. Kazeev, O. A. Bocharova, V. E. Shevchenko, R. V. Karpova, E. V. Bocharov, O. P. Sheichenko, V. G. Kucheryanu, M. A. Baryshnikova, V. B. Matveev
Abstract The results of an analysis for ginsenosides in the Multiphytoadaptogene (MPA) phytoadaptogene composition with antitumor properties by high-performance liquid chromatography with tandem mass spectrometry (HPLC-MS/MS) are presented. Ginsenosides are identified with the use of commercial standards of ginsenosides and some literature data. Ginsenosides Rb1, Rb2, Rc, Rd, Rg1, Rg2, Re, Rf, and
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Predicting the Electrochemical Pressure-Driven Membrane Separation of Industrial Solutions Using Friction Theory Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2021-12-29 K. V. Shestakov, S. I. Lazarev, P. A. Khokhlov, K. K. Polyanskii
Abstract An improved approach to determining the kinetic characteristics of electrochemical pressure-driven membrane separation of solutions has been proposed. It is based on the Spiegler friction theory and takes into account the combination of the effects of chemical and electrochemical potentials. The numerical values of the coefficients of friction fωm, f+m, and f+ω in the solvent–membrane, solute
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Extraction of Thiophene with Methyl Ether of Polyethylene Glycol 350 Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2021-12-29 V. O. Soloviev, S. V. Solovieva, Yu. A. Zakhodyaeva, A. A. Voshkin
Abstract The efficiency of polyethylene glycol methyl ether 350 (PEG ME-350) in the process of extracting thiophene from model motor fuel has been studied experimentally. The influence of the contact time of the phases, the composition of the extractant, the initial concentration of thiophene, and the volume ratio of the extractant and model fuel on the extraction of thiophene has been investigated
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Controlling Phosphorus Mobility in Compound Fertilizers Prepared from Lao Cai Apatite Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2021-12-25 Pochitalkina, I. A., Kondakov, D. F., Le, Kh. F.
Abstract The possibility of preparing a variety of fertilizers from Lao Cai apatite raw material with various contents of a water-soluble form of phosphorus at a nearly identical fraction of total and assimilable phosphates is shown.
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Effect of the Environment on the Properties of Polymer Composite Materials Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2021-12-25 Lukachevkaya, I. G., Lebedev, M. P., Struchkov, N. F.
Abstract The effect of climatic factors is studied on the properties of basalt and glass textolite prepared by the infusion method by the sequential laying of the reinforcing material on the mold, impregnation with a three-component epoxy binder consisting of ED-22 epoxy resin, Iso-MTHFA (isomethyltetrahydrophthalic anhydride) hardener, Agidol 53, an accelerator for the hardening of epoxy compositions
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Applying the Extraction–Pyrolysis Method to Modify Functional Materials Based on Metal Oxides Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2021-12-25 Steblevskaya, N. I., Medkov, M. A., Belobeletskaya, M. V.
Abstract The modification of functional materials with rare-earth elements (REEs) for different purposes by the low-temperature extraction–pyrolysis method has been carried out. Luminophors and magnetic and biomedical materials have been synthesized, and their compositions and properties have been studied. It has been established that the introduction of modifying additives (REE ions) could significantly
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Processing Metallic Bismuth to Produce Citrate Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2021-12-25 Yukhin, Yu. M., Koledova, E. S.
Abstract Using chemical and XRD phase analysis, along with electron microscopy, the hydrolytic processing of metallic bismuth into high-purity citrate has been studied. A comparison of two synthesis methods is carried out for bismuth(III) citrate of BiC6H5O7 composition by precipitation from technological nitric acid solutions by the addition of a citric acid solution and by the reactions of solid
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Sorption of U(VI) onto Layered Double Hydroxides of Mg and Al with β-Cyclodextrin from Aqueous Solutions Theor. Found. Chem. Eng. (IF 0.924) Pub Date : 2021-12-25 Kulyukhin, S. A., Krasavina, E. P., Gordeev, A. V.
Abstract The possibility of removing U(VI) from aqueous solutions using layered double hydroxides of Mg and Al, which contain β-cyclodextrin (LDH-Mg-Al-CD), has been studied. It is found that LDH-Mg-Al-CD does not sorb [UO2(CO3)3]–4 (the sorption degree does not exceed 0.001% after 24-h contact between the solid and liquid phases). At the same time, it is established that the application of LDH-Mg-Al-CD