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Physical and Mechanical Properties of Modified Continuous Basalt Fiber for the Production of Polymer Composite Materials: Experimental Study 用于生产聚合物复合材料的改性连续玄武岩纤维的物理和机械性能：实验研究
IF 0.7 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2024-01-17 DOI: 10.1134/S0040579523050330
A. A. Vasilyeva, E. D. Vasilyeva, M. S. Pavlova, A. N. Ivanov, A. G. Tuisov
{"title":"Physical and Mechanical Properties of Modified Continuous Basalt Fiber for the Production of Polymer Composite Materials: Experimental Study","authors":"A. A. Vasilyeva,&nbsp;E. D. Vasilyeva,&nbsp;M. S. Pavlova,&nbsp;A. N. Ivanov,&nbsp;A. G. Tuisov","doi":"10.1134/S0040579523050330","DOIUrl":"10.1134/S0040579523050330","url":null,"abstract":"<div><p>The possibility and technical efficiency of the use of the FA-513 nanomodifier in the formulations of lubricants (Nos. 76 and 4S) are confirmed. The optimal concentrations of FA-513 are found with an impregnation method for lubricants in the production of microplastics. The resulting microplastics exhibit increases in physical and mechanical properties of 12–25%.</p></div>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139498666","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}
引用次数: 0
Optimization Study of Calophyllum inophyllum Methyl Ester using Statistical Analysis 利用统计分析对叶绿素甲酯进行优化研究
IF 0.7 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2024-01-17 DOI: 10.1134/S0040579523050512
Appusamy Ramesh, Chandrasekaran Krishnaraj, Chokkalingam Senthilkumar, Pandian Sivakumar
{"title":"Optimization Study of Calophyllum inophyllum Methyl Ester using Statistical Analysis","authors":"Appusamy Ramesh,&nbsp;Chandrasekaran Krishnaraj,&nbsp;Chokkalingam Senthilkumar,&nbsp;Pandian Sivakumar","doi":"10.1134/S0040579523050512","DOIUrl":"10.1134/S0040579523050512","url":null,"abstract":"<p>Conventional fuels are the transportation sector’s major occupants since they provide more power and efficiency with harmful environmental pollution. Researchers have focused on alternative and suitable solutions over a decade, considering the depletion of conventional fuels and environmental pollution. The present work is trying to explore an alternative solution resulting from <i>Calophyllum inophyllum</i> seed oil. This oil is extracted mechanically from seeds and the acid value is found to be very high. Acid esterification of oil is done with diluted H<sub>2</sub>SO<sub>4</sub> to reduce the acid oil value of oil to make the oil suitable for the transesterification process. Here, a less expensive and abundantly available CaO catalyst is synthesized from wastages of gas industries. Further, the independent factors of transesterification, such as the molar ratio of methanol and oil, type and concentration of the process catalyst, process temperature, stirring rate and process time need to be optimized to get maximum biodiesel yield through the process. The process is optimized by Response Surface Methodology (RSM) through Box Behnken Design with minimum experimental runs. The optimization results show that optimum values are 9 : 1, 50°C and 3 wt % of molar ratio of methanol and oil, process temperature and concentration of catalyst, respectively. During this process, the Analysis of Variance ANOVA table was also employed to identify the significance and fitness of the model.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139498658","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}
引用次数: 0
The Stability Analysis of a Chemical Process in a Flow Reactor 流动反应器中化学过程的稳定性分析
IF 0.7 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2024-01-17 DOI: 10.1134/S0040579523050378
A. A. Belyaev, A. V. Arutyunov, V. S. Arutyunov
{"title":"The Stability Analysis of a Chemical Process in a Flow Reactor","authors":"A. A. Belyaev,&nbsp;A. V. Arutyunov,&nbsp;V. S. Arutyunov","doi":"10.1134/S0040579523050378","DOIUrl":"10.1134/S0040579523050378","url":null,"abstract":"<p>The possibility of emergence of oscillatory conditions during a chemical process in a flow reactor with spatial inhomogeneity is analyzed. The mathematical dynamic model of the reactor takes into account molecular and convective heat- and mass-transfer processes. The problem is solved in a one-dimensional approximation under single-step chemical-reaction conditions. An analytical expression for the stability criterion of the steady-state conditions is obtained provided that the diffusion and temperature conductivity coefficients are equal. The sequence of actions upon determining the critical conditions for the stability of the system is shown. A series of numerical experiments is performed to verify the emergence of oscillatory regimes at different parameter values corresponding to real conditions in the reactor.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142412115","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}
引用次数: 0
Interaction of Reactive Dyes with Tetraalkylammonium Halides in Aqueous Solutions 水溶液中活性染料与四烷基卤化铵的相互作用
IF 0.7 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2024-01-17 DOI: 10.1134/S0040579523310056
A. P. Mikhailovskaya, I. V. Elokhin, Yu. A. Masel’
{"title":"Interaction of Reactive Dyes with Tetraalkylammonium Halides in Aqueous Solutions","authors":"A. P. Mikhailovskaya,&nbsp;I. V. Elokhin,&nbsp;Yu. A. Masel’","doi":"10.1134/S0040579523310056","DOIUrl":"10.1134/S0040579523310056","url":null,"abstract":"<div><p>A spectroscopic study was made of the intermolecular interaction of monochlorotriazine and vinyl sulfone reactive dyes with cationic surfactants based on quaternary ammonium salts in aqueous solutions.</p></div>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139498515","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}
引用次数: 0
Synthesis of Biodegradable Film Made from Sodium Alginate Embedded with Magnesium Nanoparticles for Food Packaging Applications 利用嵌入镁纳米颗粒的海藻酸钠合成用于食品包装的生物降解薄膜
IF 0.7 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2024-01-17 DOI: 10.1134/S0040579523050457
Harish Kumar, Anuj Kumar Singh, Munendra Kumar, Kusagra Singh,  Vishal, Ankur Gaur, M. S. Karuna, Afreen Nishat, Laiba Saltnat
{"title":"Synthesis of Biodegradable Film Made from Sodium Alginate Embedded with Magnesium Nanoparticles for Food Packaging Applications","authors":"Harish Kumar,&nbsp;Anuj Kumar Singh,&nbsp;Munendra Kumar,&nbsp;Kusagra Singh,&nbsp; Vishal,&nbsp;Ankur Gaur,&nbsp;M. S. Karuna,&nbsp;Afreen Nishat,&nbsp;Laiba Saltnat","doi":"10.1134/S0040579523050457","DOIUrl":"10.1134/S0040579523050457","url":null,"abstract":"<p>The current work focuses on the synthesis of the biodegradable film made from Sodium alginate (S.A), and then the addition of magnesium oxide nanoparticles (MgO-NPs) was synthesized by sol-gel technique. Glycerol which is a plasticizer is used to enhance the tensile strength (TS) and film expansion due to a decrease in intermolecular forces in the polymer chain. With the addition of olive oil (OE), the functional properties of control films were improved, which results in a lowering of water solubility, and moisture content but the tensile strength slightly decreased. The opacity, moisture absorption, and solubility of the film, thickness, tensile strength (TS), elongation (EB), ultraviolet-vis spectroscopy, scanning electron microscope (SEM), transmission electron microscopy (TEM) were used to characterize sodium alginate biofilm with the addition of MgO-NPs (SA1) and without the addition of MgO-NPs (SA2). But considering all other factors, the film (SA1) revealed a slower rate of degradation than the film (SA2). The film’s TS and opacity are enhanced by MgO-NPs addition, while moisture content (WVP), solubility, and elongation at break are decreased.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142412213","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}
引用次数: 0
Enhancement of Heat Transfer in a Tube Channel of a Tubular Heat Exchanger 增强管式热交换器管槽中的热传递
IF 0.7 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2024-01-17 DOI: 10.1134/S0040579523050433
A. A. Konoplev, B. L. Rytov, Al. Al. Berlin, S. V. Romanov
{"title":"Enhancement of Heat Transfer in a Tube Channel of a Tubular Heat Exchanger","authors":"A. A. Konoplev,&nbsp;B. L. Rytov,&nbsp;Al. Al. Berlin,&nbsp;S. V. Romanov","doi":"10.1134/S0040579523050433","DOIUrl":"10.1134/S0040579523050433","url":null,"abstract":"<p>Thermal engineering experiments were carried out with laboratory water-to-water tube-in-tube heat exchangers of the same design parameters with smooth and profiled inner tubes. The tubes were profiled by confuser–diffuser constrictions of the flow section of the inner channel, which were formed by the deformation of their walls and placed along the length at a step that was constant and equal for all profiled tubes. The obtained results showed a dependence of the heat transfer enhancement in the tube channel on the Reynolds and Prandtl numbers, with the dependence on the latter being much stronger than that on the former, at least in cases where the heat carrier is water.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142412148","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}
引用次数: 0
Pilot-Plant Production of Titanosilicate Sorbents 钛硅酸盐吸附剂的中试生产
IF 0.7 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2024-01-17 DOI: 10.1134/S0040579523050093
L. G. Gerasimova, A. I. Nikolaev, A. G. Artemenkov, E. S. Shchukina, M. V. Maslova, Yu. G. Kiselev
{"title":"Pilot-Plant Production of Titanosilicate Sorbents","authors":"L. G. Gerasimova,&nbsp;A. I. Nikolaev,&nbsp;A. G. Artemenkov,&nbsp;E. S. Shchukina,&nbsp;M. V. Maslova,&nbsp;Yu. G. Kiselev","doi":"10.1134/S0040579523050093","DOIUrl":"10.1134/S0040579523050093","url":null,"abstract":"<p>Pilot-plant testing of a laboratory technology for producing alkaline titanosilicate sorbent from the current titanium-containing technogenic waste from the enrichment of the Khibiny apatite–nepheline ore shows that this technology can be modeled on an enlarged (pilot-plant) scale. The parameters of the main technological operations in systems of various salt compositions are checked and optimized. For example, in the ammonium sulfate systems, a two-phase precipitate is formed, which consists of phases similar to the minerals zorite and ivanyukite at their weight ratio of about 1 : 0.8–1.0. A one-phase precipitate in the form of ivanukite crystals is formed in the sulfate system. A study of the technical and sorption properties characterized in the tests of sorbents finds that the absorption of the Cs<sup>+</sup> cation is due to the substitution for the Na<sup>+</sup> cation in the interframework space of the crystal. The Sr<sup>2+</sup> cation is also substituted for Na<sup>+</sup> and is additionally deposited on the sorbent particles due to the alkaline reaction of its surface. The sorption capacities of powder and granules for Sr<sup>2+</sup> are, on average, 170 and 160 mg g<sup>–1</sup>, respectively; and for Cs+, 275 and 245 mg g<sup>–1</sup>, respectively. Tests will be continued as pilot batches of the sorbent with stable structure and properties are produced for testing in specialized organizations.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142412195","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}
引用次数: 0
Phase Composition of Ceramic Materials Based on Waste of the Fuel and Energy Complex 基于燃料和能源综合体废弃物的陶瓷材料的相组成
IF 0.7 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2024-01-17 DOI: 10.1134/S0040579523050287
I. Yu. Roshchupkina, E. S. Abdrakhimova, V. Z. Abdrakhimov
{"title":"Phase Composition of Ceramic Materials Based on Waste of the Fuel and Energy Complex","authors":"I. Yu. Roshchupkina,&nbsp;E. S. Abdrakhimova,&nbsp;V. Z. Abdrakhimov","doi":"10.1134/S0040579523050287","DOIUrl":"10.1134/S0040579523050287","url":null,"abstract":"<p>The study concerns waste of the fuel and energy complex, ceramic samples, and the phase composition of ceramic samples. The fuel energy complex is one of the main sources of pollution of the natural environment. Usage of waste of the fuel and energy complex in ceramic masses for manufacturing ceramic materials is favorable for the formation of mullite, anorthite, hematite, cristobalite, and wollastonite in the products.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142412140","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}
引用次数: 0
Liquid and Gas Hydrodynamics in Film Regular Sprayed Packings in a Cocurrent Downflow Regime 同向下流条件下薄膜常规喷雾填料中的液体和气体流体力学
IF 0.7 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2024-01-17 DOI: 10.1134/S0040579523050354
V. N. Babak, N. N. Kulov
{"title":"Liquid and Gas Hydrodynamics in Film Regular Sprayed Packings in a Cocurrent Downflow Regime","authors":"V. N. Babak,&nbsp;N. N. Kulov","doi":"10.1134/S0040579523050354","DOIUrl":"10.1134/S0040579523050354","url":null,"abstract":"<p>The work considers the hydrodynamics in contemporary packed film devices with tubular and plane channels and laminar and turbulent gas- and liquid-flow patterns in a downflow cocurrent regime. Weak hydrodynamic interaction between the phases and no velocity circulation in the gas phase are assumed. The solution is found by the approximate Schlichting method. The distribution of velocities in the phases, the thickness of the downflowing film, and the sizes of the inlet hydrodynamic areas in the liquid and gas are determined.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142412136","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}
引用次数: 0
Synthesis of Magnesium Thermal Molybdenum Powders with a Highly Developed Surface 合成表面高度发达的镁热钼粉末
IF 0.7 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2024-01-17 DOI: 10.1134/S0040579523050123
V. N. Kolosov, M. N. Miroshnichenko
{"title":"Synthesis of Magnesium Thermal Molybdenum Powders with a Highly Developed Surface","authors":"V. N. Kolosov,&nbsp;M. N. Miroshnichenko","doi":"10.1134/S0040579523050123","DOIUrl":"10.1134/S0040579523050123","url":null,"abstract":"<p>The synthesis of molybdenum powders with a highly developed surface by reducing molybdenum oxides with magnesium vapor in the temperature range of 600–750°C under dynamic vacuum conditions (0.01 kPa) and residual argon pressure of 0.5–10 kPa in a reactor is studied. During the MgMoO<sub>4</sub> and CaMoO<sub>4</sub> reduction, mesoporous molybdenum powders with a specific surface area of up to 31.8 m<sup>2</sup> g<sup>–1</sup> are obtained. The average size of the metal crystallites is 16–25 nm.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142412134","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}
引用次数: 0
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