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Theoretical Foundations of Chemical Engineering最新文献

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Approximation of the Dependence of Liquid Density on Temperature by a Power Equation 用功率方程逼近液体密度对温度的依赖关系
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-09-21 DOI: 10.1134/S0040579525700691
A. B. Golovanchikov, N. A. Prokhorenko, N. A. Merentsov, Yu. V. Bogdanova
{"title":"Approximation of the Dependence of Liquid Density on Temperature by a Power Equation","authors":"A. B. Golovanchikov,&nbsp;N. A. Prokhorenko,&nbsp;N. A. Merentsov,&nbsp;Yu. V. Bogdanova","doi":"10.1134/S0040579525700691","DOIUrl":"10.1134/S0040579525700691","url":null,"abstract":"<p>A comparison is made of the accuracy of approximation of the dependence of the liquid density on temperature given in the form of a table or graph by a known typical equation and its power modification obtained by replacing the algebraic dependence of the rheology of a viscous Newtonian fluid with the Ostwald de Wiel power equation for so-called pseudoplastic liquids. It is shown that for the liquids considered in the work (water, benzene, plastic lubricant, and machine oil), the proposed modified power equation in a wide range of temperature changes reduces both the average relative deviation of the theoretical density values from the specified values and the largest relative deviation by several times.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 2","pages":"443 - 447"},"PeriodicalIF":0.6,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100748","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
Development of a Wastewater Treatment Technology for Tailings Storage Facilities of Mineral Processing Plants 选矿厂尾矿库废水处理技术的研究
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-09-21 DOI: 10.1134/S0040579525700599
T. V. Kovrigina, K. Kh. Khakimbolatova, T. K. Chalov, B. E. Begenova
{"title":"Development of a Wastewater Treatment Technology for Tailings Storage Facilities of Mineral Processing Plants","authors":"T. V. Kovrigina,&nbsp;K. Kh. Khakimbolatova,&nbsp;T. K. Chalov,&nbsp;B. E. Begenova","doi":"10.1134/S0040579525700599","DOIUrl":"10.1134/S0040579525700599","url":null,"abstract":"<p>A treatment unit for desalinating water by reverse osmosis was developed to remove cyanides, thiocyanates, total hardness, and traces of nonoxidized metals from wastewater. A test stand was constructed, and the influence of various oxidants on the oxidation of metals and ions was examined. It was found that ozone oxidizes all components 10–15% more efficiently than sodium hypochlorite. Iron sulfate shows slightly better oxidation performance than polyaluminum chloride, but the required dosage of iron sulfate is 50–100 mg/L, while that of polyaluminum chloride is only 5–7 mg/L. Various filter media were studied, and the operational parameters of the reverse osmosis unit were determined. Aluminosilicate media AS/MS exhibited the best sorption properties.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 2","pages":"370 - 376"},"PeriodicalIF":0.6,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100611","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
Effect of Temperature and Gas Phase on the Crystallization and Mineral Composition of Dacite-Type Volcanic Rock 温度和气相对英安岩型火山岩结晶及矿物组成的影响
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-09-21 DOI: 10.1134/S0040579525700642
S. V. Fomichev, V. A. Krenev, E. N. Pechyonkina, E. I. Berbekova, D. F. Kondakov
{"title":"Effect of Temperature and Gas Phase on the Crystallization and Mineral Composition of Dacite-Type Volcanic Rock","authors":"S. V. Fomichev,&nbsp;V. A. Krenev,&nbsp;E. N. Pechyonkina,&nbsp;E. I. Berbekova,&nbsp;D. F. Kondakov","doi":"10.1134/S0040579525700642","DOIUrl":"10.1134/S0040579525700642","url":null,"abstract":"<p>Computer-based physico-chemical modeling was used to analyze melting and crystallization processes in the natural Si–Ti–Al–Fe–Mn–Mg–Ca–Na–K–O system, which corresponds to an acidic volcanic dacite rock. The presence of volcanic glass and the disequilibrium of minerals in dacite phenocrysts hinder the instrumental determination of mineral composition and melt behavior. The methods applied here, based on chemical analysis data and computer modeling, make it possible to calculate the compositions of the solid phases and melts formed under various conditions and to select an optimal approach for rationally modifying the composition of magmatic rocks in the production of cast stone, ceramics, and mineral fibers.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 2","pages":"405 - 408"},"PeriodicalIF":0.6,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100627","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
Technology for Processing Hydrolytic Sodium Arsenite to Produce Arsenic Acid Solutions 水解亚砷酸钠制砷酸溶液工艺研究
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-09-21 DOI: 10.1134/S0040579525700587
T. K. Menshchikova, L. A. Vaymugin, K. S. Nikonov, O. E. Myslitsky, M. N. Brekhovskikh
{"title":"Technology for Processing Hydrolytic Sodium Arsenite to Produce Arsenic Acid Solutions","authors":"T. K. Menshchikova,&nbsp;L. A. Vaymugin,&nbsp;K. S. Nikonov,&nbsp;O. E. Myslitsky,&nbsp;M. N. Brekhovskikh","doi":"10.1134/S0040579525700587","DOIUrl":"10.1134/S0040579525700587","url":null,"abstract":"<p>Hydrolytic sodium arsenite (HSA), a product of chemical weapons destruction, contains a significant amount of arsenic, which can be used for the growth of single crystals and epitaxial layers of A<sup>III</sup>B<sup>V</sup>-type semiconductors and solid solutions based on them. A process is proposed for producing an arsenic acid solution from HSA using a highly concentrated hydrogen peroxide solution as an oxidizing agent. This technique can be applied in the 6N purity arsenic production.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 2","pages":"366 - 369"},"PeriodicalIF":0.6,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100628","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
Application Areas, Design, and Calculation of Vortex Apparatuses 涡旋装置的应用领域、设计与计算
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-09-21 DOI: 10.1134/S004057952570071X
E. Yu. Baranova, I. Yu. Golovanov, A. S. Sokolov
{"title":"Application Areas, Design, and Calculation of Vortex Apparatuses","authors":"E. Yu. Baranova,&nbsp;I. Yu. Golovanov,&nbsp;A. S. Sokolov","doi":"10.1134/S004057952570071X","DOIUrl":"10.1134/S004057952570071X","url":null,"abstract":"<p>The design features and calculation principles of conventional hydrocyclones, vortex hydroseparators with counter-twisted flows, cylindrical hydrocyclones for mixing foam-forming liquids, vortex gas and liquid ejectors, and vortex dust collectors are described.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 2","pages":"455 - 462"},"PeriodicalIF":0.6,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100749","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
Control of Photoluminescence of Hybrid Structures on Porous Silicon with Zinc Oxide Obtained by the Extraction–Pyrolytic Method 萃取-热解法制备氧化锌对多孔硅杂化结构光致发光的控制
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-09-21 DOI: 10.1134/S0040579525350015
O. V. Semenova, A. Ya. Korets, S. A. Podorozhnyak, T. N. Patrusheva
{"title":"Control of Photoluminescence of Hybrid Structures on Porous Silicon with Zinc Oxide Obtained by the Extraction–Pyrolytic Method","authors":"O. V. Semenova,&nbsp;A. Ya. Korets,&nbsp;S. A. Podorozhnyak,&nbsp;T. N. Patrusheva","doi":"10.1134/S0040579525350015","DOIUrl":"10.1134/S0040579525350015","url":null,"abstract":"<p>The work is devoted to the study of photoluminescence in the visible spectral range of structures on porous silicon with zinc oxide obtained by the extraction–pyrolytic method. Experimental excitation and emission spectra of the photoluminescence of hybrid structures were studied in the wavelength ranges 210–400 and 350–800 nm. The observed differences in the photoluminescence spectra of samples obtained at different excitation wavelengths of photoluminescence are analyzed. The results show that, by using different excitation wavelengths, it is possible to tune the emission maximum of the photoluminescence spectra of the studied heterostructures in the wavelength range 350–800 nm. The possibility of controlling the photoluminescence spectrum by changing the excitation energy is demonstrated.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 2","pages":"275 - 280"},"PeriodicalIF":0.6,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100753","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
Study of the Composition, Structure, and Radiation Resistance of Optical Properties of a Dielectric Protective Polymer Paste for Flexible Substrates 柔性衬底介质保护聚合物浆料的组成、结构及光学性能研究
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-09-21 DOI: 10.1134/S004057952570054X
M. M. Mikhailov, A. N. Lapin, S. A. Yur’ev, V. A. Goronchko, S. A. Artishchev, D. S. Fedosov, N. S. Trufanova
{"title":"Study of the Composition, Structure, and Radiation Resistance of Optical Properties of a Dielectric Protective Polymer Paste for Flexible Substrates","authors":"M. M. Mikhailov,&nbsp;A. N. Lapin,&nbsp;S. A. Yur’ev,&nbsp;V. A. Goronchko,&nbsp;S. A. Artishchev,&nbsp;D. S. Fedosov,&nbsp;N. S. Trufanova","doi":"10.1134/S004057952570054X","DOIUrl":"10.1134/S004057952570054X","url":null,"abstract":"<p>The paper presents the results of the study of the surface, structure, optical properties, and radiation resistance of a coating obtained by printing on a <i>Voltera V-One</i> printer with a dielectric protective polymer paste for flexible substrates. It is shown that, in terms of its reflectivity in the solar range of the spectrum and its radiation resistance when irradiated with accelerated electrons, the paste is suitable for coatings used in spacecraft thermal control systems and can be used in their designs.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 2","pages":"327 - 333"},"PeriodicalIF":0.6,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100755","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
Efficiency of Using Advanced Oxidation Processes and Activated Carbon for Municipal Wastewater Treatment 深度氧化工艺及活性炭处理城市污水的效果研究
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-09-21 DOI: 10.1134/S0040579525700733
V. N. Shtepa, S. Yu. Kireev, A. V. Kozyr, A. B. Shikunets, S. N. Kireeva, Yu. N. Kirilina, A. Z. Yangurazova
{"title":"Efficiency of Using Advanced Oxidation Processes and Activated Carbon for Municipal Wastewater Treatment","authors":"V. N. Shtepa,&nbsp;S. Yu. Kireev,&nbsp;A. V. Kozyr,&nbsp;A. B. Shikunets,&nbsp;S. N. Kireeva,&nbsp;Yu. N. Kirilina,&nbsp;A. Z. Yangurazova","doi":"10.1134/S0040579525700733","DOIUrl":"10.1134/S0040579525700733","url":null,"abstract":"<p>The global issue of hazardous persistent micropollutant accumulation in water bodies, including those of biological origin, was assessed. Modern approaches to municipal wastewater treatment using advanced biotechnological solutions (methods: SHARON, CANON, BABE, OLAND, ANAMMOX) and advanced oxidation processes (AOPs) were analyzed. Promising aspects of combining these methods to improve the removal of persistent forms of pollutants were identified. A methodology was developed for experimental studies on the removal of contaminants from aqueous solutions using ozonation, ultrasonic treatment, pressurized electrolysis, and the addition of powdered activated carbon as a reagent. The results of municipal wastewater treatment confirmed the potential of these methods. The best overall performance in terms of nitrogen compounds, organoleptic characteristics, and microbiological indicators was achieved by combining pressurized electrolysis with the addition of powdered activated carbon. This technological approach is proposed for use in the post-treatment of wastewater following biological treatment facilities.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 2","pages":"471 - 479"},"PeriodicalIF":0.6,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100762","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 Tetraalkylammonium Bromide in an Organic Solvent Medium 有机溶剂介质中四烷基溴化铵的合成
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-09-21 DOI: 10.1134/S0040579525700496
K. Shikolenko, A. P. Mikhaylovskaya
{"title":"Synthesis of Tetraalkylammonium Bromide in an Organic Solvent Medium","authors":"K. Shikolenko,&nbsp;A. P. Mikhaylovskaya","doi":"10.1134/S0040579525700496","DOIUrl":"10.1134/S0040579525700496","url":null,"abstract":"<p>A method for producing tetraalkylammonium bromide with one long aliphatic radical in a polar organic solvent medium is described. Isopropyl alcohol is recommended as the solvent for the alkylation reaction of triethylamine with octadecyl bromide, proceeding via a bimolecular nucleophilic substitution mechanism. The influence of the synthesis temperature of triethyloctadecylammonium bromide in isopropyl alcohol on the yield of the target reaction product was studied.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 2","pages":"293 - 297"},"PeriodicalIF":0.6,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100608","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
Application of Double Salts in the Production of Emulsion Rubbers 双盐在乳液橡胶生产中的应用
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-09-21 DOI: 10.1134/S0040579525700472
V. A. Revina, L. A. Vlasova, S. S. Nikulin
{"title":"Application of Double Salts in the Production of Emulsion Rubbers","authors":"V. A. Revina,&nbsp;L. A. Vlasova,&nbsp;S. S. Nikulin","doi":"10.1134/S0040579525700472","DOIUrl":"10.1134/S0040579525700472","url":null,"abstract":"<p>The possibility of using alum as a coagulant in the production of emulsion rubbers is considered. Its consumption is 5–10 times less than that of sodium chloride, which makes it possible to create a closed technological cycle with its use. The use of wastes that include mixtures of inorganic salts in their composition will help to reduce the components of the emulsion system in wastewater.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 2","pages":"281 - 285"},"PeriodicalIF":0.6,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100742","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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