Contents

Theoretical Foundations of Chemical Engineering

Vol. 54, No. 6, 2020

Estimation of the Separation Coefficient of Oxygen Isotopes in Aqueous Salt Solutions

V. S. Pokalchuk, E. P. Magomedbekov, I. L. Rastunova, A. Yu. Chebotov and N. N. Kulov p. 1127  abstract

Impinging-Jets Micromixers and Microreactors: State of the Art and Prospects for Use in the Chemical Technology of Nanomaterials (Review)

R. Sh. Abiev p. 1131  abstract

Dynamics of Mass Transfer through the Interface between Immiscible Liquids under the Resonance Effect of Ultrasound

O. M. Gradov, Yu. A. Zakhodyaeva and A. A. Voshkin p. 1148  abstract

Nonequilibrium Stage Based Modeling of a Falling Film Distillation Unit

C. A. Claumann, R. Battisti, T. Peruzzo, A. Bolzan, C. Marangoni and R. A. F. Machado p. 1156  abstract

Optimum Conditions for Extraction of Chitin and Chitosan from Callinectes amnicola Shell Waste

O. A. Olafadehan, T. O. Ajayi and K. O. Amoo p. 1173  abstract

Recovery of Tartaric Acid from Aqueous Solution by Liquid Membrane Technique: Optimization by Taguchi Design of Experimental Methodology

K. Pourkhanali, S. Babaie and Gholam Khayati p. 1195  abstract

Effect of Metal Fillers on Relaxation Processes in Elastomers

T. R. Aslamazova, V. A. Kotenev, N. Yu. Lomovskaya, V. A. Lomovskoi and A. Yu. Tsivadze p. 1205  abstract

Developing Energy-Efficient Technologies for Obtaining Organic Substances Based on a Comprehensive Study of the Reaction and Separation Constituents

A. V. Frolkova, M. A. Mayevskii, A. K. Frolkova and D. B. Pletnev p. 1215  abstract

Method for Calculating the Density of Mixed Solutions of Strong Electrolytes

N. N. Kulov and A. V. Ochkin p. 1223  abstract

A Potential-Integral-Index Algorithm for Analyzing the Pressure Fluctuations of Gas Flows in Complex Pipelines

R. R. Kantyukov, V. P. Meshalkin and O. B. Butusov p. 1229  abstract

Studying the Dependence of the Performance Efficiency of a Claus Reactor on Technological Factors with the Quality Evaluation of Sulfur on the Basis of Fuzzy Information

B. B. Orazbayev, Zh. Ye. Shangitova, K. N. Orazbayeva, B. A. Serimbetov and A. B. Shagayeva p. 1235  abstract

Tandem Mass Spectrometry in the Technology of Determining Aralosides of Phytoadaptogene Compositions

I. V. Kazeev, O. A. Bocharova, V. E. Shevchenko, R. V. Karpova, E. V. Bocharov, E. V. Uyutova, O. P. Sheychenko, V. G. Kucheryan and M. A. Baryshnikova p. 1242  abstract

Extension of the Classification of Three-Component Systems Containing Binary Biazeotropic Components and Not Containing Ternary Azeotropes

T. V. Chelyuskina, A. V. Polkovnichenko and D. D. Modurova p. 1247  abstract

Estimating the Multiplicity of the Steady States of a Fermentation Process for Lactic Acid Production at a Given Concentration of the Component Producing the Main Substrate

Yu. L. Gordeeva, L. V. Ravichev and E. L. Gordeeva p. 1256  abstract

Prediction of Sound Speed in Natural-Gas Mixtures Using the CP-PC-SAFT Equation of State

I. V. Prikhod’ko, A. A. Samarov, A. M. Toikka and M. Farzaneh-Gord p. 1267  abstract

Modeling the Solubility of Hydrogen Sulfide in Ionic Liquids Using van der Waals Equation of State

Hossein Sakhaeinia p. 1276  abstract

Filler Particle Size and Packaging and Compositions of Filled Polymer Composites with Different Types of Structures and Properties

I. D. Simonov-Emelyanov and K. I. Kharlamova p. 1290  abstract

Investigation into the Change in the Composition of the Ethylbenzene Feed in a Styrene Production Reactor while Taking into Account the Partial Pressures of the Reactants

S. L. Podvalny, A. P. Popov, S. G. Tikhomirov, O. V. Karmanova, O. G. Neizvestnyi and E. N. Kovaleva p. 1297  abstract

Acid-Base Properties of Cobalt Ferrite Surface Examined by Different Physicoсhemical Methods

K. O. Denisova, A. A. Il’in, R. N. Rumyantsev, A. P. Il’in and N. N. Smirnov p. 1306  abstract

Experimental and CFD Study of Heat Transfer in Spouted Beds: Analysis of Nusselt Number Correlations

J. N. M. Batista, R. C. Brito, J. T. Freire and R. Béttega p. 1314  abstract

Influence of Chemical Reaction on Mass Transport in Yield Stress Exhibiting Flow Regime

Uzma Arif, M. Nawaz, Shafia Rana, Imran Haider Qureshi, Yasser Elmasry and Shafiq Hussain p. 1327  abstract

Numerical Analysis of Multiple Steady States, Limit Cycles, Period-Doubling, and Chaos in Enzymatic Reactions Involving Oxidation of L-tyrosine to Produce L-DOPA

Yuan-Hong Luo and Hsing-Ya Li p. 1340  abstract