Theoretical Foundations of Chemical Engineering最新文献_第10页

Packing of Filler Particles of Different Sizes and the Rheological Properties of Polymer Dispersions with Different Types of Structures 不同尺寸填料颗粒的填充及不同类型结构聚合物分散体的流变性能

IF 0.4 4区工程技术

Theoretical Foundations of Chemical Engineering Pub Date : 2026-07-23 DOI: 10.1134/S0040579526600804

I. D. Simonov-Emel’yanov, P. V. Surikov

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Analytical Design of Observation Systems in Chemical Cybernetics 化学控制论中观测系统的分析设计

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Theoretical Foundations of Chemical Engineering Pub Date : 2026-07-23 DOI: 10.1134/S0040579526600865

A. S. Gorobtsov, O. E. Grigor’eva, E. N. Ryzhov

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Modeling of Lithium Adsorption in a Packed Column from Associated Water of Oil Fields 油田伴生水填料柱对锂吸附的模拟

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Theoretical Foundations of Chemical Engineering Pub Date : 2026-07-23 DOI: 10.1134/S0040579526600877

M. B. Glebov, V. A. Naletov, A. M. Kasatkin, A. Yu. Naletov

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Sorption Separation of Niobium–Zirconium Cation Mixture 铌锆阳离子混合物的吸附分离

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Theoretical Foundations of Chemical Engineering Pub Date : 2026-07-23 DOI: 10.1134/S0040579526600993

V. V. Samonin, Yu. S. Fedorov, V. Yu. Morozova, M. E. Sikoyeva

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Experimental Study of the Kinetics of the Reaction of Hydrochloric Acid with Carbonate Rocks under Thermobaric Conditions of the Reservoir 储层温压条件下盐酸与碳酸盐岩反应动力学实验研究

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Theoretical Foundations of Chemical Engineering Pub Date : 2026-07-23 DOI: 10.1134/S0040579526600713

R. M. Ganopolsky, B. R. Gilmutdinov, A. V. Zhonin, T. M. Mukhametzyanov, K. M. Fedorov, A. E. Folomeev

{"title":"Experimental Study of the Kinetics of the Reaction of Hydrochloric Acid with Carbonate Rocks under Thermobaric Conditions of the Reservoir","authors":"R. M. Ganopolsky, B. R. Gilmutdinov, A. V. Zhonin, T. M. Mukhametzyanov, K. M. Fedorov, A. E. Folomeev","doi":"10.1134/S0040579526600713","DOIUrl":"10.1134/S0040579526600713","url":null,"abstract":"The interaction of acid with carbonate rocks is the basis for processes of increasing the productivity of production wells and intensifying oil production from carbonate reservoirs. The dissolution of carbonates under conditions of filtration of an acid solution through a porous medium is determined by the competition between the processes of chemical reaction and convective transfer of acid. The study of these competing processes is carried out in two main setups: a rotating carbonate disk washed by a flow of acid and a setup for filtering an acid solution through carbonate reservoir samples. The paper presents the results of such studies with a discussion of the results and the determination of the reaction kinetics parameters on a sample of a specific deposit. The values of the diffusion and reaction kinetics and the critical rate of formation of wormholes in a porous medium at different concentrations of hydrochloric acid are calculated. The values of the main dimensionless similarity complexes are estimated: the Damköhler and Peclet numbers and the dissolving power of the acid.","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 6","pages":"1441 - 1449"},"PeriodicalIF":0.4,"publicationDate":"2026-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148552979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Hydrodynamics and Heat Transfer on a Disc Sprayer 圆盘喷雾器的流体力学与传热

IF 0.4 4区工程技术

Theoretical Foundations of Chemical Engineering Pub Date : 2026-07-23 DOI: 10.1134/S0040579526600956

A. V. Balchugov, I. L. Sablina, D. V. Antonov, A. A. Kramarenko

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Metal Extraction from Nitrate Solutions Using a Deep Eutectic Solvent Composed of Bis(2,4,4-trimethylpentyl)phospinic Acid and Phenol 用双（2,4,4-三甲基戊基）膦酸和苯酚组成的深共晶溶剂萃取硝酸盐溶液中的金属

IF 0.4 4区工程技术

Theoretical Foundations of Chemical Engineering Pub Date : 2026-07-23 DOI: 10.1134/S0040579526600683

T. Yu. Chikineva, I. V. Zinov’eva, E. S. Uvarova, A. V. Milevskaya, Yu. A. Zakhodyaeva, A. A. Voshkin

{"title":"Metal Extraction from Nitrate Solutions Using a Deep Eutectic Solvent Composed of Bis(2,4,4-trimethylpentyl)phospinic Acid and Phenol","authors":"T. Yu. Chikineva, I. V. Zinov’eva, E. S. Uvarova, A. V. Milevskaya, Yu. A. Zakhodyaeva, A. A. Voshkin","doi":"10.1134/S0040579526600683","DOIUrl":"10.1134/S0040579526600683","url":null,"abstract":"The qualitative and quantitative composition of NdFeB magnet have been determined, and the specific features of metal leaching with nitric acid solutions have been studied. Optimal conditions for the most complete metal leaching have been selected. For the extraction of a number of metals from the nitric acid leachate of neodymium magnets, a hydrophobic deep eutectic solvent composed of bis(2,4,4-trimethylpentyl)phosphinic acid (commercially known as Cyanex 272) and phenol has been proposed as an extractant. Experimental data on the extraction of Ni, Fe, Al, and Cu ions from model individual and mixed solutions using the BTMPPA/phenol deep eutectic solvent have been obtained by varying key process parameters, specifically, medium acidity, salting-out agent concentration, component ratio in the eutectic solvent, metal concentration, etc. The results obtained indicate the promising application of the BTMPPA/phenol deep eutectic solvent for the recovery of Ni, Fe, Al, and Cu cations in the processing of magnetic material waste.","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 6","pages":"1431 - 1440"},"PeriodicalIF":0.4,"publicationDate":"2026-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148552857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Comparison of Temperature and Ultrasonic Intensification of Supercritical Fluid Extraction: Case Study of Wild Parsnip Seeds 超临界流体萃取温度与超声强化的比较——以野生防风草种子为例

IF 0.4 4区工程技术

Theoretical Foundations of Chemical Engineering Pub Date : 2026-07-23 DOI: 10.1134/S0040579526600701

I. N. Rostovschikova, R. V. Nikonov, A. V. Kamler, D. V. Ovchinnikov, D. S. Kosyakov, O. I. Pokrovskiy

{"title":"Comparison of Temperature and Ultrasonic Intensification of Supercritical Fluid Extraction: Case Study of Wild Parsnip Seeds","authors":"I. N. Rostovschikova, R. V. Nikonov, A. V. Kamler, D. V. Ovchinnikov, D. S. Kosyakov, O. I. Pokrovskiy","doi":"10.1134/S0040579526600701","DOIUrl":"10.1134/S0040579526600701","url":null,"abstract":"A comparison of thermal and ultrasonic intensification of supercritical fluid extraction using wild parsnip seeds, a source of plant oil and furocoumarin photosensibilizers, is conducted. It is found that, even at pressure as high as 300 bar, the temperature effect on parsnip extraction demonstrates a so-called retrograde behavior; i.e., isobaric temperature increase leads to a decrease in extraction speed and overall mass yield. The previously proposed idea on a chromatography-like mechanism of the supercritical fluid extraction process with multiple re-adsorption of the isolated components onto the plant material working as a sorbent allows explaining the observance of retrograde behavior, uncommon for such high pressure values. The overall influence of ultrasonic intensification of extraction process is shown to be similar to that of temperature. At low extraction pressure (100 bar), when cavitation of a subcritical fluid entering the extraction zone is possible in principle, ultrasonication leads to an increased extraction kinetics at the initial, linear part of the extraction curve. At high working pressure (300 bar), the effect of ultrasonication is essentially equal to that of direct heating. Using supercritical fluid chromatography, the furocoumarin profiles of the thermal and ultrasonic parsnip extracts are shown to be identical; thus, ultrasonication even at 100 bar does not cause any unwanted sonochemical effects.","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 6","pages":"1493 - 1504"},"PeriodicalIF":0.4,"publicationDate":"2026-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148552858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Determination of Hindered Motion Velocity of Dispersed Particles in Sedimentation and Bubbling Processes 沉降和鼓泡过程中分散颗粒阻碍运动速度的测定

IF 0.4 4区工程技术

Theoretical Foundations of Chemical Engineering Pub Date : 2026-07-23 DOI: 10.1134/S0040579526600919

A. M. Trushin, L. V. Ravichev, M. A. Nosyrev, V. E. Yashin

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Concentration Distribution of Molecules and Particles in a Chrome-Containing Model System: Fe–K2Cr2O7–NaCl–H2SO4–H2O at Different Temperatures of the Electrocoagulation Process 含铬模型体系Fe-K2Cr2O7-NaCl-H2SO4-H2O在不同电凝温度下的分子和颗粒浓度分布

IF 0.4 4区工程技术

Theoretical Foundations of Chemical Engineering Pub Date : 2026-07-23 DOI: 10.1134/S0040579526601007

Z. K. Maimekov, D. A. Sambaeva, J. B. Izakov, N. T. Shaikieva, M. Dolaz, M. Kobya

{"title":"Concentration Distribution of Molecules and Particles in a Chrome-Containing Model System: Fe–K2Cr2O7–NaCl–H2SO4–H2O at Different Temperatures of the Electrocoagulation Process","authors":"Z. K. Maimekov, D. A. Sambaeva, J. B. Izakov, N. T. Shaikieva, M. Dolaz, M. Kobya","doi":"10.1134/S0040579526601007","DOIUrl":"10.1134/S0040579526601007","url":null,"abstract":"For the purpose of water purification from chromium (Cr6+), thermodynamic modeling of the electrocoagulation process has been carried out in the Fe–K2Cr2O7–NaCl–H2SO4–H2O system over a wide temperature range (278–300 K). The physicochemical (pH, I, Eh, Cp) and thermodynamic (H, S, U, G) parameters of the system have been calculated at established optimal ratios of the initial components. Based on the calculated data, an experimental study was performed and the influence on the electrocoagulation processes of pH, current strength, type, and concentration of electrolytes has been revealed. The concentration distribution of individual molecules and species (cations, anions) has been established, including: Cr2+, Cr3+, CrO+, CrOH2+, Fe+, FeOH+, FeOH2+ in the solution, thereby eliminating the need for ion chromatography for analytical purposes. An Eh–pH diagram has been constructed indicating the stability fields of various chromium forms, and a formula has been derived for calculating the redox potential depending on the solution pH. It is shown that Eh > 0, i.e., the medium is oxidative, and the formation of Cr3+ is noted in the concentrated solution (I > 0.8). During electrocoagulation, the binding of sulfur and iron in the form of FeS2 has been achieved, followed by the formation of Fe(OH)3 and coprecipitation of Cr(OH)3. The degree of water purification from chromium exceeded 97% (reduction of Cr6+ in water from 100 mg/L to 2.29–2.30 mg/L).","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 6","pages":"1727 - 1735"},"PeriodicalIF":0.4,"publicationDate":"2026-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148552978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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