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Bulletin of the Saint Petersburg State Institute of Technology (Technical University)最新文献

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ENGINEERING SUPPORT FOR THE APPLICATION OF ION-EXCHANGE FIBERS IN "WET" TECHNOLOGIES. MEMBRANE FILTRATION 离子交换纤维在“湿”技术中应用的工程支持。膜过滤
Bulletin of the Saint Petersburg State Institute of Technology (Technical University) Pub Date : 2023-01-01 DOI: 10.36807/1998-9849-2023-64-90-88-95
A. S. Chugunov, V. Vinnitskii
{"title":"ENGINEERING SUPPORT FOR THE APPLICATION OF ION-EXCHANGE FIBERS IN \"WET\" TECHNOLOGIES. MEMBRANE FILTRATION","authors":"A. S. Chugunov, V. Vinnitskii","doi":"10.36807/1998-9849-2023-64-90-88-95","DOIUrl":"https://doi.org/10.36807/1998-9849-2023-64-90-88-95","url":null,"abstract":"An experimental verification of the expediency of using membrane technologies as one of the options for engineering support of the use of ion-exchange fibers for solving environmental problems is discussed. Comparative data on the sorption of cations by the protonated and sodium forms of the ion-exchange fiber are presented. It is shown that membrane filtration is a rather effective means of providing optimal operating conditions for radial filtration cartridges made of ion-exchange fibers.","PeriodicalId":9467,"journal":{"name":"Bulletin of the Saint Petersburg State Institute of Technology (Technical University)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74743360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
BIO-TREATMENT OF INDUSTRIAL AND URBAN WASTEWATER FROM PHOSPHORUS COMPOUNDS 含磷工业及城市废水的生物处理
Bulletin of the Saint Petersburg State Institute of Technology (Technical University) Pub Date : 2023-01-01 DOI: 10.36807/1998-9849-2023-64-90-79-82
A. Kazakov, Vadim E. Somov
{"title":"BIO-TREATMENT OF INDUSTRIAL AND URBAN WASTEWATER FROM PHOSPHORUS COMPOUNDS","authors":"A. Kazakov, Vadim E. Somov","doi":"10.36807/1998-9849-2023-64-90-79-82","DOIUrl":"https://doi.org/10.36807/1998-9849-2023-64-90-79-82","url":null,"abstract":"The technology of biological treatment of industrial and urban wastewater, based on the alternation of anaerobic and aerobic stages, taking into account the modernization and re-equipment of existing treatment facilities, is considered. It was shown that the use of disk aerators of a new type makes it possible to achieve a high degree of wastewater treatment from phosphorus compounds. The duration of anaerobic and aerobic stages was experimentally estimated. The tasks of hydrodynamic and mass transfer studies of the bio-purification process were formulated in order to create engineering methods for calculating industrial processes.","PeriodicalId":9467,"journal":{"name":"Bulletin of the Saint Petersburg State Institute of Technology (Technical University)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81935893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
DYNAMICS AND KINEMATICS OF MOVEMENT OF THE MENISCUS OF LIQUID IN THE CAPILLARY 毛细管中液体半月板运动的动力学和运动学
Bulletin of the Saint Petersburg State Institute of Technology (Technical University) Pub Date : 2023-01-01 DOI: 10.36807/1998-9849-2023-64-90-3-7
E. Bibik
{"title":"DYNAMICS AND KINEMATICS OF MOVEMENT OF THE MENISCUS OF LIQUID IN THE CAPILLARY","authors":"E. Bibik","doi":"10.36807/1998-9849-2023-64-90-3-7","DOIUrl":"https://doi.org/10.36807/1998-9849-2023-64-90-3-7","url":null,"abstract":"The role of capillary pressure as a factor determining the dynamics and kinematics of the capillary flow is considered. The observed axial flow is considered as a consequence of the radial flow of the fluid bordering the surface of the meniscus. It is shown that the radial flow is due to the gradient of the superficial tension of the meniscus caused by the deformation of the meniscus surface by the forces of fluid adhesion to the capillary wall. An estimate of current velocities is given. Under typical conditions, the velocity of the radial flow is by a factor of ten greater than the flow velocity along the capillary axis when the volume velocities calculated from the values of the tension gradient and the capillary pressure, respectively, are equal. It is concluded that the observed movement of the meniscus is caused by the flow of fluid on the surface of the capillary, in which the axial component of the flow rate on the capillary wall is zero. This eliminates the contradiction between the apparent movement of the meniscus and the equation of the axial flow of fluid in the capillary, according to which the speed on the wall should be zero","PeriodicalId":9467,"journal":{"name":"Bulletin of the Saint Petersburg State Institute of Technology (Technical University)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81183714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
FURFURAL AND ITS DERIVATIVES: RECYCLING OF PLANT WASTE AND ITS SYNTHETIC POTENTIAL 糠醛及其衍生物:植物废料的回收利用及其合成潜力
Bulletin of the Saint Petersburg State Institute of Technology (Technical University) Pub Date : 2023-01-01 DOI: 10.36807/1998-9849-2023-65-91-52-59
B. Laskin, D. V. Doktorov, O. Y. Ozerova, Anastasiya M. Lobova, Anastasiya V. Egorova
{"title":"FURFURAL AND ITS DERIVATIVES: RECYCLING OF PLANT WASTE AND ITS SYNTHETIC POTENTIAL","authors":"B. Laskin, D. V. Doktorov, O. Y. Ozerova, Anastasiya M. Lobova, Anastasiya V. Egorova","doi":"10.36807/1998-9849-2023-65-91-52-59","DOIUrl":"https://doi.org/10.36807/1998-9849-2023-65-91-52-59","url":null,"abstract":"Agricultural waste contains a huge store of renewable carbon. Involving it in chemical processing, as a source of such a basic chemical as furfural, can not only reduce the environmental burden on nature, but also allow the development of new integrated approaches to the problem of recycling plant waste, such as lignocellulose. The possibilities of using furfural – derived from agricultural waste – as the main «platform compound» for the production of other furan-based chemicals were considered. Their use as fuel additives of a new generation, as well as substances for the production of broad-spectrum pharmaceutical products was considered.","PeriodicalId":9467,"journal":{"name":"Bulletin of the Saint Petersburg State Institute of Technology (Technical University)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87741167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 MECHANICAL CHARACTERISTICS OF POLYMER COMPOSITE MATERIALS BASED ON ACRYLIC HYDROGELS AND INORGANIC NANOPARTICLES USING OSCILLATION RHEOMETRY 用振荡流变法研究丙烯酸水凝胶和无机纳米颗粒聚合物复合材料的力学特性
Bulletin of the Saint Petersburg State Institute of Technology (Technical University) Pub Date : 2023-01-01 DOI: 10.36807/1998-9849-2023-65-91-42-46
Dmitriy V. Grigoriev, E. Sivtsov, M. Uspenskaya
{"title":"STUDY OF THE MECHANICAL CHARACTERISTICS OF POLYMER COMPOSITE MATERIALS BASED ON ACRYLIC HYDROGELS AND INORGANIC NANOPARTICLES USING OSCILLATION RHEOMETRY","authors":"Dmitriy V. Grigoriev, E. Sivtsov, M. Uspenskaya","doi":"10.36807/1998-9849-2023-65-91-42-46","DOIUrl":"https://doi.org/10.36807/1998-9849-2023-65-91-42-46","url":null,"abstract":"The production of polymer composite materials based on acrylic gels and such inorganic fillers as bentonite and detonation nanodiamonds, which make it possible to improve physical and mechanical characteristics of gels, was studied. Oscillation rheometry methods were used to study the rheological properties of these materials, based on the dependences of dynamic modules on frequency. The influence of the fillers studied on the values of dynamic modules and the tangent of the mechanical loss angle of the gel was discussed","PeriodicalId":9467,"journal":{"name":"Bulletin of the Saint Petersburg State Institute of Technology (Technical University)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85064829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
DETERMINATION OF DENSITY AND DIELECTRIC PERMITTIVITY OF SOLUTIONS OF MEDIUM-HEAVY RARE EARTH ELEMENTS IN AQUEOUS SOLUTIONS AND IN EXTRACTS OF ACIDIC ORGANOPHOSPHORUS EXTRACTANTS 水溶液和酸性有机磷萃取剂萃取物中重稀土元素溶液密度和介电介电常数的测定
Bulletin of the Saint Petersburg State Institute of Technology (Technical University) Pub Date : 2023-01-01 DOI: 10.36807/1998-9849-2023-65-91-9-15
V. Fedorov, M. A. Afonin
{"title":"DETERMINATION OF DENSITY AND DIELECTRIC PERMITTIVITY OF SOLUTIONS OF MEDIUM-HEAVY RARE EARTH ELEMENTS IN AQUEOUS SOLUTIONS AND IN EXTRACTS OF ACIDIC ORGANOPHOSPHORUS EXTRACTANTS","authors":"V. Fedorov, M. A. Afonin","doi":"10.36807/1998-9849-2023-65-91-9-15","DOIUrl":"https://doi.org/10.36807/1998-9849-2023-65-91-9-15","url":null,"abstract":"Co-extraction of rare-earth elements from chloride solutions containing total rare-earth elements by a mixture of extractants mono-2-ethylhexyl ester of 2-ethylhexylphosphonic acid (P507) + di(2,2,4-trimethylpentyl)phosphinic acid (Cyanex 272) + 10 about. % TBP in isopar-l with a mass concentration of P507 + Cyanex 272 - 15%. The density and permittivity of solutions of rare-earth elements of the medium-heavy group in aqueous solutions and in extracts of acidic organophosphorus extractants have been determined. Initial concentrations in REE GH solutions ranged from 0.15 to 1.7 mol/dm3. The features of complex formation in a mixture of praseodymium metal and P507 extractant were studied. The initial concentrations in praseodymium solutions ranged from 0.014 to 0.149 mol/dm3.","PeriodicalId":9467,"journal":{"name":"Bulletin of the Saint Petersburg State Institute of Technology (Technical University)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91066277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
RESEARCH OF THE ANTIMICROBIAL PROPERTIES OF FIBROUS MATERIALS TREATED BY COMPOSITIONS BASED ON FLUOROPOLYMER LATEX 含氟聚合物乳液组合物处理纤维材料的抗菌性能研究
Bulletin of the Saint Petersburg State Institute of Technology (Technical University) Pub Date : 2023-01-01 DOI: 10.36807/1998-9849-2023-65-91-47-51
D. A. Kozub, L. Redina
{"title":"RESEARCH OF THE ANTIMICROBIAL PROPERTIES OF FIBROUS MATERIALS TREATED BY COMPOSITIONS BASED ON FLUOROPOLYMER LATEX","authors":"D. A. Kozub, L. Redina","doi":"10.36807/1998-9849-2023-65-91-47-51","DOIUrl":"https://doi.org/10.36807/1998-9849-2023-65-91-47-51","url":null,"abstract":"The work discusses the research of antimicrobial properties of fabrics treated by compositions based on poly-2-perfluoropentoxytetrafluoropropyl acrylate, which imparts hydro-, oleophobicity to the fabric. To impart flame retardant properties to the material, a fire retardant agent (ammonium polyphosphate / Flamatic DM-3088) was added to its composition, and for antimicrobial properties polyhexamethylene guanidine hydrochloride (methacid) was added. Culture inoculation to determine the effectiveness of biocidal finishing was carried out by the agar diffusion method, Bacillus subtilis was chosen as the test object. As a result of the study, it was found that treatment of the fibrous material with a metacide both separately and as part of a composition inhibits the growth of microorganisms.","PeriodicalId":9467,"journal":{"name":"Bulletin of the Saint Petersburg State Institute of Technology (Technical University)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77544772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
ANALYTICAL QUALITY CONTROL OF ELASTIC EXPLOSIVE MANUFACTURING 弹性炸药制造的分析质量控制
Bulletin of the Saint Petersburg State Institute of Technology (Technical University) Pub Date : 2023-01-01 DOI: 10.36807/1998-9849-2023-64-90-31-33
Mikhail V. Ageev, Polina O. Bespalova, Valery N. Egorov, Yury V. Nickolaev, Lyubov N. Chuchupal
{"title":"ANALYTICAL QUALITY CONTROL OF ELASTIC EXPLOSIVE MANUFACTURING","authors":"Mikhail V. Ageev, Polina O. Bespalova, Valery N. Egorov, Yury V. Nickolaev, Lyubov N. Chuchupal","doi":"10.36807/1998-9849-2023-64-90-31-33","DOIUrl":"https://doi.org/10.36807/1998-9849-2023-64-90-31-33","url":null,"abstract":"A safe method of determination of mass fraction of high explosive in an elastic explosive containing a polymer binder and technological additives was developed. The method allows us to obtain reliable data while saving time and resources.","PeriodicalId":9467,"journal":{"name":"Bulletin of the Saint Petersburg State Institute of Technology (Technical University)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73202540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
POLYMER 3D PRINTING: HISTORY, CLASSIFICATION AND CURRENT DEVELOPMENT TRENDS (Review) 聚合物3D打印:历史、分类及发展趋势(综述)
Bulletin of the Saint Petersburg State Institute of Technology (Technical University) Pub Date : 2023-01-01 DOI: 10.36807/1998-9849-2023-64-90-58-66
Andrey A. Muravskiy, M. Alikin, I. M. Dvorko, N. Lavrov
{"title":"POLYMER 3D PRINTING: HISTORY, CLASSIFICATION AND CURRENT DEVELOPMENT TRENDS (Review)","authors":"Andrey A. Muravskiy, M. Alikin, I. M. Dvorko, N. Lavrov","doi":"10.36807/1998-9849-2023-64-90-58-66","DOIUrl":"https://doi.org/10.36807/1998-9849-2023-64-90-58-66","url":null,"abstract":"The article presents the history of the emergence of additive technologies. The main stages of that process were highlighted. Scientists who made a significant contribution to the formation and progress of three-dimensional printing were named. Modern progress trends were described. Data on additive technologies were systematized. The characteristics and features of the main methods of polymer 3D printing were given. The problem of classification of additive technologies were considered.","PeriodicalId":9467,"journal":{"name":"Bulletin of the Saint Petersburg State Institute of Technology (Technical University)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91511170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
LASER IGNITION OF PYROTECHNIC COMPOSITIONS – POROUS SILICON - SKF-32 FLUOROPOLYMER - MULTILAYER GRAPHENE 激光点火烟火组合物-多孔硅- skf-32含氟聚合物-多层石墨烯
Bulletin of the Saint Petersburg State Institute of Technology (Technical University) Pub Date : 2023-01-01 DOI: 10.36807/1998-9849-2023-64-90-34-39
G. Savenkov, Dmitry V. Fadeev, Uliana M. Poberezhnaya, M. Ilyushin, A. S. Mazur, A. Voznyakovskii, I. A. Oskin, V. A. Bragin, I. V. Shugaley
{"title":"LASER IGNITION OF PYROTECHNIC COMPOSITIONS – POROUS SILICON - SKF-32 FLUOROPOLYMER - MULTILAYER GRAPHENE","authors":"G. Savenkov, Dmitry V. Fadeev, Uliana M. Poberezhnaya, M. Ilyushin, A. S. Mazur, A. Voznyakovskii, I. A. Oskin, V. A. Bragin, I. V. Shugaley","doi":"10.36807/1998-9849-2023-64-90-34-39","DOIUrl":"https://doi.org/10.36807/1998-9849-2023-64-90-34-39","url":null,"abstract":"The article presents the results of studies on laser ignition of films of pyrotechnic compositions based on porous silicon, fluorine-containing polymer and graphene. The effect of graphene additives on the ignition process and the process of film combustion was analyzed. It was shown that in a number of cases the process of film combustion is accompanied by the appearance of a secondary flame zone and smoke formation.","PeriodicalId":9467,"journal":{"name":"Bulletin of the Saint Petersburg State Institute of Technology (Technical University)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91535643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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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