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Theoretical Foundations of Chemical Engineering最新文献

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Modification of the Mineral Composition of Metallurgical Sludges during Gas-Phase Treatment in Nitriding Media. Part II. Waste Material from the Nickel Plant in Punta Gorda, Operated by the Cuban State-Owned Company Commercial Caribbean Nickel 氮化介质气相处理中冶金污泥矿物组成的改变。第二部分。来自蓬塔戈尔达镍厂的废料，由古巴国有加勒比商业镍公司经营
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-09-21 DOI: 10.1134/S0040579525700629
K. V. Martynov, Yu. M. Nevolin, S. A. Kulyukhin
{"title":"Modification of the Mineral Composition of Metallurgical Sludges during Gas-Phase Treatment in Nitriding Media. Part II. Waste Material from the Nickel Plant in Punta Gorda, Operated by the Cuban State-Owned Company Commercial Caribbean Nickel","authors":"K. V. Martynov,&nbsp;Yu. M. Nevolin,&nbsp;S. A. Kulyukhin","doi":"10.1134/S0040579525700629","DOIUrl":"10.1134/S0040579525700629","url":null,"abstract":"<p>Phase transformations were examined using X-ray microanalysis and X-ray diffraction phase analysis in samples of waste material from the nickel plant in Punta Gorda operated by the Cuban state-owned company Commercial Caribbean Nickel S.A. during gas-phase treatment in an HNO<sub>3</sub>(vapor)–air atmosphere and subsequent treatment of the phase transformation products with water.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 2","pages":"392 - 399"},"PeriodicalIF":0.6,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100613","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
Large-Scale Testing of the Technology for the Complex Processing of Phosphogypsum 磷石膏复合加工工艺的大规模试验
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-09-21 DOI: 10.1134/S0040579525700563
E. P. Lokshin, O. A. Tareeva, A. M. Kostinets
{"title":"Large-Scale Testing of the Technology for the Complex Processing of Phosphogypsum","authors":"E. P. Lokshin,&nbsp;O. A. Tareeva,&nbsp;A. M. Kostinets","doi":"10.1134/S0040579525700563","DOIUrl":"10.1134/S0040579525700563","url":null,"abstract":"<div><p>The main indicators obtained during large-scale tests of the technology for complex processing of phospho-semihydrate produced from apatite concentrate produced by JSC Apatit, developed at the I.V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Resources, Kola Scientific Center of the Russian Academy of Sciences, are reported. The achieved results (high extraction of rare earth metals into non-radioactive oxocarbonate concentrate, degree of purification of the gypsum product from harmful impurities) confirm the efficiency of the technology.</p></div>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 2","pages":"348 - 355"},"PeriodicalIF":0.6,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100702","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
Photoluminescence of Porous Silicon Structures with Zinc Oxide Introduced by a Solution-Based Technique 以溶液为基础的技术介绍了多孔硅结构与氧化锌的光致发光
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-09-21 DOI: 10.1134/S0040579525700460
O. V. Semenova, A. Ya. Korets, T. N. Patrusheva, S. A. Podorozhnyak
{"title":"Photoluminescence of Porous Silicon Structures with Zinc Oxide Introduced by a Solution-Based Technique","authors":"O. V. Semenova,&nbsp;A. Ya. Korets,&nbsp;T. N. Patrusheva,&nbsp;S. A. Podorozhnyak","doi":"10.1134/S0040579525700460","DOIUrl":"10.1134/S0040579525700460","url":null,"abstract":"<p>This work focuses on the photoluminescence of porous silicon (PS) structures modified with zinc oxide. The PS samples were prepared by electrochemical etching of single-crystal silicon wafers in a hydrofluoric acid solution. Zinc oxide was introduced into the pores using a solution-based pyrolysis method. An enhancement of photoluminescence in the visible range was observed in PS samples containing zinc oxide, along with differences in the photoluminescence spectra depending on the annealing conditions. The results show that visible photoluminescence can be generated and intensified by introducing zinc oxide into PS via a solution-based approach followed by annealing in air. Variation of the annealing temperature and duration in PS–ZnO heterostructures leads to the appearance of photoluminescence in the ultraviolet, blue, and green regions of the spectrum.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 2","pages":"268 - 274"},"PeriodicalIF":0.6,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100750","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
Hydrophobic Deep Eutectic Solvents in Lithium-Ion Battery Recycling Processes 锂离子电池回收过程中的疏水深共晶溶剂
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-09-21 DOI: 10.1134/S0040579525700575
Yu. A. Zakhodyaeva, N. A. Milevsky, I. V. Zinov’eva, A. A. Voshkin
{"title":"Hydrophobic Deep Eutectic Solvents in Lithium-Ion Battery Recycling Processes","authors":"Yu. A. Zakhodyaeva,&nbsp;N. A. Milevsky,&nbsp;I. V. Zinov’eva,&nbsp;A. A. Voshkin","doi":"10.1134/S0040579525700575","DOIUrl":"10.1134/S0040579525700575","url":null,"abstract":"<p>The growth of metal-containing waste raises public concern due to its impact on the environment, human health, and the accelerated depletion of natural resources. In the context of a circular economy, metal recovery from secondary resources is attracting increasing research interest. Liquid–liquid extraction and leaching are the main processes used for separating and recovering metals from such sources. The extractants and solvents typically used in these processes often possess aggressive properties that can cause not only environmental problems but also damage to industrial equipment. Therefore, there is a need to make these processes safer and cleaner by using environmentally friendly solvents. In recent years, deep eutectic solvents have attracted attention due to their ease of preparation, biodegradability, low toxicity, and the ability to finely tune their physicochemical properties. Recently, studies have emerged on their use for metal recovery from electronic waste, minerals, biological materials, and other sources. This review provides an overview of hydrophobic deep eutectic solvents and their application in the recovery and separation of a wide range of metals, including those from lithium-ion batteries.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 2","pages":"356 - 365"},"PeriodicalIF":0.6,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100703","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
Statistical Modeling of Open Porosity Formation in Flat Basalt–Plastic Composite Materials Under Climatic Testing 气候试验条件下平坦玄武岩-塑性复合材料开放孔隙形成的统计模拟
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-09-21 DOI: 10.1134/S0040579525350027
G. G. Vinokurov, N. F. Struchkov, A. K. Kychkin, M. P. Lebedev
{"title":"Statistical Modeling of Open Porosity Formation in Flat Basalt–Plastic Composite Materials Under Climatic Testing","authors":"G. G. Vinokurov,&nbsp;N. F. Struchkov,&nbsp;A. K. Kychkin,&nbsp;M. P. Lebedev","doi":"10.1134/S0040579525350027","DOIUrl":"10.1134/S0040579525350027","url":null,"abstract":"<p>A statistical model of open porosity formation in flat basalt–plastic composite materials under climatic degradation is proposed. The distribution of the porous structure is considered as a two-dimensional cluster structure on a square lattice. To describe the formation of open porosity, coinciding elements of two-dimensional porosity clusters of several (two, three, or more) flat layers of basalt–plastic composite materials are identified.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 2","pages":"334 - 341"},"PeriodicalIF":0.6,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100745","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
Potential for Using Cobalt Concentrate Waste in the Production of Ceramic Products 利用钴精矿废料生产陶瓷制品的潜力
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-09-21 DOI: 10.1134/S0040579525700630
M. O. Moldurushku, N. I. Kopylov, B. K. Kara-Sal
{"title":"Potential for Using Cobalt Concentrate Waste in the Production of Ceramic Products","authors":"M. O. Moldurushku,&nbsp;N. I. Kopylov,&nbsp;B. K. Kara-Sal","doi":"10.1134/S0040579525700630","DOIUrl":"10.1134/S0040579525700630","url":null,"abstract":"<p>The effect of firing temperature on the properties of ceramic samples produced from clay-based mixtures with arsenic-containing waste from the Tuvacobalt plant was examined. An increase in the moisture content of the mixture from 10 to 15% resulted in a significant increase in the strength of the ceramic samples. At 850°C, the compressive strength of the samples increased from 14 to 21 MPa. New phases (andradite and wollastonite) were identified in the ceramic samples and likely contributed to the increase in strength. Arsenic was shown to be incorporated into silicate structures during firing in the form of stable arsenates.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 2","pages":"400 - 404"},"PeriodicalIF":0.6,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100626","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
Selection of the Optimal Expanded Perlite for Insulation of Isothermal Tanks 等温储罐保温用最佳膨胀珍珠岩的选择
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-09-21 DOI: 10.1134/S0040579525700423
N. V. Gurgenyan, I. B. Khachanova, A. V. Martirosyan, A. E. Grigoryan, M. F. Kostandyan, N. K. Vardanyan
{"title":"Selection of the Optimal Expanded Perlite for Insulation of Isothermal Tanks","authors":"N. V. Gurgenyan,&nbsp;I. B. Khachanova,&nbsp;A. V. Martirosyan,&nbsp;A. E. Grigoryan,&nbsp;M. F. Kostandyan,&nbsp;N. K. Vardanyan","doi":"10.1134/S0040579525700423","DOIUrl":"10.1134/S0040579525700423","url":null,"abstract":"<p>Expanded perlites were obtained from raw materials classified by density and particle size fractions. The bulk densities, thermal conductivity coefficients, fineness moduli, and settlement degree of the expanded perlite were determined. To ensure the stability of the properties of the expanded aggregate, selective mining of perlite in thin extraction layers uniform in average density and narrow fractionation were proposed. For more reliable insulation, two-layer insulation of isothermal tanks was suggested depending on the settlement degree of the expanded perlites.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 2","pages":"246 - 250"},"PeriodicalIF":0.6,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100629","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
Retraction Note: Development of a Sorbent Based on Chitosan and Vermiculite for Textile Wastewater Treatment 基于壳聚糖和蛭石的纺织废水吸附剂的研制
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-09-21 DOI: 10.1134/S0040579525360011
G. A. Ikhtiyarova, S. M. Turabdzhanov
{"title":"Retraction Note: Development of a Sorbent Based on Chitosan and Vermiculite for Textile Wastewater Treatment","authors":"G. A. Ikhtiyarova,&nbsp;S. M. Turabdzhanov","doi":"10.1134/S0040579525360011","DOIUrl":"10.1134/S0040579525360011","url":null,"abstract":"","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 2","pages":"480 - 480"},"PeriodicalIF":0.6,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100709","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
A Novel Approach to Surface Modification of Complex Polypropylene Fibers and Films 复合聚丙烯纤维和薄膜表面改性的新方法
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-09-21 DOI: 10.1134/S0040579525700502
N. P. Prorokova, S. Yu. Vavilova, V. M. Buznik
{"title":"A Novel Approach to Surface Modification of Complex Polypropylene Fibers and Films","authors":"N. P. Prorokova,&nbsp;S. Yu. Vavilova,&nbsp;V. M. Buznik","doi":"10.1134/S0040579525700502","DOIUrl":"10.1134/S0040579525700502","url":null,"abstract":"<p>A novel approach to the surface modification of complex polypropylene fibers and films with metal-containing nanoparticles has been developed and experimentally validated. The process is implemented during melt extrusion of fibers and films. The proposed approach is based on the strong fixation of stabilized nanosized metal-containing particles on the surface of the material through the incorporation of a stable ultrathin polytetrafluoroethylene coating, formed using a previously developed technique. It has been shown that incorporating 0.001–0.2% of stabilized iron-, copper-, and silver-containing nanoparticles into the polytetrafluoroethylene coating increases its density without adversely affecting adhesion to the polypropylene substrate.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 2","pages":"298 - 307"},"PeriodicalIF":0.6,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100754","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
Oil Sorption Properties of Clinoptilolite-Bearing Rocks Mechanically Activated with Poly(diethylene glycol) Sebacate 聚二甘醇脂酸酯机械活化斜发沸石岩石的吸油特性
IF 0.6 4区 工程技术
Theoretical Foundations of Chemical Engineering Pub Date : 2025-09-21 DOI: 10.1134/S0040579525700551
O. N. Dabizha, T. V. Khamova, O. A. Shilova
{"title":"Oil Sorption Properties of Clinoptilolite-Bearing Rocks Mechanically Activated with Poly(diethylene glycol) Sebacate","authors":"O. N. Dabizha,&nbsp;T. V. Khamova,&nbsp;O. A. Shilova","doi":"10.1134/S0040579525700551","DOIUrl":"10.1134/S0040579525700551","url":null,"abstract":"<p>The effect of mechanical energy input (2.16, 3.60, and 5.04 kJ/g) on the thermal stability, physical properties, and sorption characteristics of sorbents based on clinoptilolite-bearing rocks and 5 wt % poly(diethylene glycol) sebacate was examined. Dehydration of the samples in the temperature range of 75–150°C was identified as a diffusion-controlled process. It was found that a mechanical energy dose of 5.04 kJ/g significantly increased the oil sorption capacity of the powdery organomineral sorbents in an aqueous medium compared to the untreated rocks.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"59 2","pages":"342 - 347"},"PeriodicalIF":0.6,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100756","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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